199 results on '"Previtali F."'
Search Results
102. Suoli e ambienti della Val Grosina (Sondrio)
- Author
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Assi, I, Barcella, M, Bischetti, G, Comolli, R, Folladori, L, Previtali, F, Bischetti, GB, COMOLLI, ROBERTO, PREVITALI, FRANCO, Assi, I, Barcella, M, Bischetti, G, Comolli, R, Folladori, L, Previtali, F, Bischetti, GB, COMOLLI, ROBERTO, and PREVITALI, FRANCO
- Abstract
Four typical alpine environments of Grosina Valley (Sondrio, Northern Italy), in their geolithological, geomorphological, climatic, pedological, vegetational, and anthropic aspects are described and analyzed. Moreover, some relationships between the soil formation factors are outlined
- Published
- 1998
103. Pedosequences in northern Tien Shan Mountain Belt (Kazakhstan-Kirgizstan)
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Previtali, F, Assi, I, Sefrna, L, PREVITALI, FRANCO, Sefrna, L., Previtali, F, Assi, I, Sefrna, L, PREVITALI, FRANCO, and Sefrna, L.
- Abstract
Some selected soil profiles and environmental conditions of a sector of the Tien Shan mountain belt, between Kazakhstan and Kirgizstan, were investigated. Main target of the research was to give information about soil classification and distribution, and about changes in chemical, biochemical and physical properties with elevation, lithology, vegetation, and climate
- Published
- 1997
104. Mitigating land degradation in Mediterranean agro-silvo-pastoral systems: a GIS-based approach
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d'Angelo, M, primary, Enne, G, additional, Madrau, S, additional, Percich, L, additional, Previtali, F, additional, Pulina, G, additional, and Zucca, C, additional
- Published
- 2000
- Full Text
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105. Seismipedoturbations in Volcanic Soils in North-Eastern Ecuador
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Previtali, F, PREVITALI, FRANCO, Previtali, F, and PREVITALI, FRANCO
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Two earth tremors caused topsoil and turf overturning, cracks in the ash mantle, and probably also cracks in soil profiles. In seismically active regions such episodic events may substantially influence soil profile development
- Published
- 1992
106. Carta Pedologica del Bacino del Rio D'Astimini-Fiume Santo (Sassari) alla scala 1:25.000
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Baldaccini, P, Baldaccini, P, Previtali, F, Madrau, S, Deroma, M, Baldaccini, P, Baldaccini, P, Previtali, F, Madrau, S, and Deroma, M
- Abstract
La carta contiene la rappresentazione areale dei suoli con classificazioni tassonomiche, informazioni geomorfologiche, attitudini agli usi agro-silvo-pastorali, usi reali dei suoli
- Published
- 1992
107. Impact of 40 years poplar cultivation on soil carbon stocks and greenhouse gas fluxes.
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Ferré, C., Leip, A., Matteucci, G., Previtali, F., and Seufert, G.
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BIOSPHERE ,POPLARS ,GREENHOUSE gases ,SALICACEAE ,PROPERTIES of matter ,VAPORS - Abstract
Within the JRC Kyoto Experiment in the Regional Park and UN-Biosphere Reserve "Parco Ticino" (North-Italy, near Pavia), the soil carbon stocks and fluxes of CO
2 , N2 O, and CH4 were measured in a poplar plantation in comparison with a natural mesohygrophilous deciduous forest nearby, which represents the pristine land cover of the area. Soil fluxes were measured using the static and dynamic closed chamber techniques for CH5 , N2 O, and CO2 , respectively. We made further a pedological study to relate the spatial variability found with soil parameters. Annual emission fluxes of N2 O and CO2 and deposition fluxes of CH4 were calculated for the year 2003 for the poplar plantation and compared to those measured at the natural forest site. N2 O emissions at the poplar plantation were 0.15±0.1 g N2 O m-2 y-1 and the difference to the emissions at the natural forest of 0.07±0.06 g N2 O m-2 y-1 are partly due to a period of high emissions after the flooding of the site at the end of 2002. CH4 consumption at the natural forest was twice as large as at the poplar plantation. In comparison to the relict forest, carbon stocks in the soil under the poplar plantation were depleted by 61% of surface (10 cm) carbon and by 25% down the profile under tillage (45 cm). Soil respiration rates were not significant different at both sites with 1608±1053 and 2200±791 g CO2 m-2 y-1 at the poplar plantation and natural forest, respectively, indicating that soil organic carbon is much more stable in the natural forest. In terms of the greenhouse gas budget, the non-CO2 gases contributed minor to the overall soil balance with only 0.9% (N2 O) and -0.3% (CH4 ) of CO2 -eq emissions in the natural forest, and 2.7% (N2 O) and -0.2% of CO2 -eq. emissions in the poplar plantation. The very high spatial variability of soil fluxes within the two sites was related to the morphology of the floodplain area, which was formed by the historic course of the Ticino river and led to a small-scale (tenth of meters) variability in soil texture and to smallscale differences in elevation. Differences of site conditions are reflected by differences of inundation patterns, ecosystem productivity, CO2 and N2 O emission rates, and soil contents of carbon and nitrogen. Additional variability was observed during a flooding event and after fertilisation at the poplar site. Despite of this variability, the two sites are comparable as both originate from alluvial deposits. The study shows that changes in soil carbon stocks and related fertility are the most visible phenomena after 40 years of land use change from a pristine forest to a fast growing poplar plantation. Therefore, the conservation and careful management of existing carbon stocks deserves highest priority in the context of the Kyoto Protocol. [ABSTRACT FROM AUTHOR]- Published
- 2005
108. La magnesite di Kutahya (Turchia Occidentale)
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Previtali, F, PREVITALI, FRANCO, Previtali, F, and PREVITALI, FRANCO
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In the western part of Turkey near Kutahya, between Ankara and lzmir, frequent magnesite mineralizations within ophiolitic series outcrop. This work reports the results of a first geological and mining survey on two intensely mineralized areas
- Published
- 1975
109. Lineamenti geologico-agrari della bassa e media Lombardia.
- Author
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De Wrachien, D, Previtali, F, PREVITALI, FRANCO, De Wrachien, D, Previtali, F, and PREVITALI, FRANCO
- Abstract
The first part of the paper deals with the main geological formations outcropping in the southern and central part of Lombardy, with particular focus on their lithostratigraphic and geomorphological characters. The second part is dedicated to the description and classification of the most common pedotypes, successively grouped into associations for mapping purposes. The final part presents a series of observations on the relationships existing between the composition of the soils and their agricultural uses
- Published
- 1975
110. Studio geo-minerario del giacimento di quarzite di Kalediran Koy (Gazipasa, Turchia)
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Previtali, F, PREVITALI, FRANCO, Previtali, F, and PREVITALI, FRANCO
- Published
- 1969
111. Le mineralizzazioni a baritina del Tauro meridionale.
- Author
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Previtali, F, PREVITALI, FRANCO, Previtali, F, and PREVITALI, FRANCO
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In the work are described the baritine mineralizations, often associated with galena, which occurr numerous in the mountain range of southern Tauro in Turkey
- Published
- 1970
112. Multi-robot surveillance through a distributed sensor network
- Author
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Pennisi, A., Previtali, F., Gennari, C., Bloisi, D. D., Iocchi, L., Ficarola, F., Andrea VITALETTI, and Nardi, D.
113. Buried palaeosols of NW Sardinia (Italy) as archives of the Late Quaternary climatic fluctuations
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Zucca C., Andreucci S., Akşit I., Koca Y., Madrau S., Pascucci V., Previtali F., Shaddad S., Kapur S., Zucca C., Andreucci S., Akşit I., Koca Y., Madrau S., Pascucci V., Previtali F., Shaddad S., and Kapur S.
- Abstract
A multi-disciplinary approach was performed to investigate two compound geosols included between wind-blown deposits at the top, and interglacial (MIS 5) beach sediments at the bottom, located along the Alghero coast (North-western Sardinia, Italy). A sedimentological and morphological study was carried out on the profile in the field, and samples collected on the main pedomembers were subjected to several laboratory analyses, consisting of physical and chemical determinations on bulk samples, mineralogy (XRD), micromorphology on undisturbed samples (thin Section, SEM), and EDAX-micro probe analyses. Dating was performed by means of Optically Stimulated Luminescence (OSL). The studied geosols show the evidence of a complex pedosedimentary evolution. Around 80 to 70. ka the lower geosol underwent weathering and clay illuviation (wet and warm conditions), followed by calcification-recalcification processes (dry-contrasted), and finally by strong bioturbation. Around 70. ka the onset of the glacial period (MIS 4) is marked by the deposition of a sand dune, capping the lower geosol. These results indicate that the coastal area of the central Mediterranean kept the relatively warm conditions typical of the interglacial climate for most of the Early Würm and reached cold conditions only at about 70. ka, possibly in relation to the rapid cooling of the Heinrich event H7. The upper geosol developed on colluvial material including abundant pedorelicts and reddish earth material, deposited around 50. ka. Before being buried by aeolian sand around 43. ka, this deposit underwent pedogenesis phases possibly associated to Middle Würm interstadial events, indicating that in the study area these events were intense enough to influence pedogenesis. © 2014 Elsevier B.V.
114. Buried palaeosols of NW Sardinia (Italy) as archives of the Late Quaternary climatic fluctuations
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Zucca C., Andreucci S., Akşit I., Koca Y., Madrau S., Pascucci V., Previtali F., Shaddad S., Kapur S., Zucca C., Andreucci S., Akşit I., Koca Y., Madrau S., Pascucci V., Previtali F., Shaddad S., and Kapur S.
- Abstract
A multi-disciplinary approach was performed to investigate two compound geosols included between wind-blown deposits at the top, and interglacial (MIS 5) beach sediments at the bottom, located along the Alghero coast (North-western Sardinia, Italy). A sedimentological and morphological study was carried out on the profile in the field, and samples collected on the main pedomembers were subjected to several laboratory analyses, consisting of physical and chemical determinations on bulk samples, mineralogy (XRD), micromorphology on undisturbed samples (thin Section, SEM), and EDAX-micro probe analyses. Dating was performed by means of Optically Stimulated Luminescence (OSL). The studied geosols show the evidence of a complex pedosedimentary evolution. Around 80 to 70. ka the lower geosol underwent weathering and clay illuviation (wet and warm conditions), followed by calcification-recalcification processes (dry-contrasted), and finally by strong bioturbation. Around 70. ka the onset of the glacial period (MIS 4) is marked by the deposition of a sand dune, capping the lower geosol. These results indicate that the coastal area of the central Mediterranean kept the relatively warm conditions typical of the interglacial climate for most of the Early Würm and reached cold conditions only at about 70. ka, possibly in relation to the rapid cooling of the Heinrich event H7. The upper geosol developed on colluvial material including abundant pedorelicts and reddish earth material, deposited around 50. ka. Before being buried by aeolian sand around 43. ka, this deposit underwent pedogenesis phases possibly associated to Middle Würm interstadial events, indicating that in the study area these events were intense enough to influence pedogenesis. © 2014 Elsevier B.V.
115. Seismipedoturbations in volcanic soils in north-eastern Ecuador
- Author
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Previtali, F.
- Published
- 1992
- Full Text
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116. Aeolian inputs and dolostone dissolution involved in soil formation in Alpine karst landscapes (Corna Bianca, Italian Alps)
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Michele Eugenio D'Amico, Enrico Casati, Davide Abu El Khair, Alessandro Cavallo, Marco Barcella, Franco Previtali, Eugenio D'Amico, M, Casati, E, Abu El Khair, D, Cavallo, A, Barcella, M, and Previtali, F
- Subjects
Terra Rossa ,Saharan dust ,GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,Micromorphology ,Clay mineralogy ,Loe ,Podzol ,Rare Earth Element ,Earth-Surface Processes - Abstract
Very different soil types occur across a few tens of meters on dolostone, in a never glaciated karst landscape in the Lombard Pre-Alps (Selvino, Italy). This substrate is locally enriched in well-crystallized sand-grained quartz. The quartz content is responsible for the localized genesis of Podzols. Other soil types observed in the area include strongly rubified (Terra Rossa) horizons (paleosols), preserved in the most protected dolostone cracks. Non-rubified Luvisols and Cambisols were observed in karst dry valleys and dolines while Rendzic Leptosols/ Phaeozems were common on the steepest slopes. Such a variety of soils was explained assuming different parent materials (dolostone, silica-rich dolostone, with different amounts of aeolian inputs, ascertained using textural properties, mineralogy, micromorphology, total element composition, mass balance calculations, rare earth elements, and stable elements. Many soils were highly polycyclic, with different layers associated to different parent materials and characterized by different pedogenic processes evidencing different ages. We were thus able to distinguish the horizons mainly developed from the dissolution of the dolostone from those formed in Pleistocene loess. The geochemistry of all surface soil horizons, including Podzols and Rendzic Leptosols/ Phaeozems, apparently formed from pure or quartz-rich dolostone dissolution, has been influenced by recent aeolian additions (likely Saharan dust), with deeply modified effects according to different pedogenetic processes acting locally. Saharan dust, in fact, significantly increased metal and rare earth elements contents compared to the substrate, also in the youngest and least weathered soil types.
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- 2023
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117. Thermal analysis (TG-DTA) and drift spectroscopy applied to investigate the evolution of humic acids in forest soil at different vegetation stages
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Daniela Montecchio, F Previtali, S Chersich, Diego Pizzeghello, Paolo Carletti, Serenella Nardi, Ornella Francioso, D. Montecchio, Francioso O., Carletti P., Pizzeghello D., Chersich S., Previtali F. and Nardi S., Montecchio, D, Francioso, O, Carletti, P, Pizzeghello, D, Chersich, S, Previtali, F, and Nardi, S
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Soil humic acids ,spectroscopy ,Mineralogy ,humic acid ,TG-DTA ,Grassland ,DRIFT ,forest soil ,Differential thermal analysis ,Humic acid ,Physical and Theoretical Chemistry ,chemistry.chemical_classification ,geography ,HUMIC ACIDS ,geography.geographical_feature_category ,biology ,SOIL FOREST ,Picea abies ,Vegetation ,Condensed Matter Physics ,biology.organism_classification ,Karst ,AGR/14 - PEDOLOGIA ,Thermogravimetry ,chemistry ,Environmental chemistry ,Soil water - Abstract
Humic acids (HAs) extracted from soils developed under two Norwegian spruce (Picea abies, (L.) Karst) subalpine forests of northern Italy were characterized using chemical, thermal (TG-DTA) and spectroscopic (DRIFT) analyses. The samples were taken from five sites which differed in orientation (northern and southern exposure) and vegetal cover at different old age: grassland, regeneration, immature and mature stands. In general, the thermal patterns of HAs were similar (three exothermic reactions appeared around at 300, 400 and 500 degrees C) in both sites in grasslands and regeneration while a considerable modification appeared in HA from stands of different age at northern and southern exposure site. DRIFT spectroscopy confirmed the differences observed through TG-DTA analysis. In particular the main structural changes were ascribed to modification of carbonyl group and of CH stretching in aliphatic components in each HAs from different sites.
- Published
- 2006
118. New dates of a Northern Italian loess deposit (Monte Orfano, Southern pre-Alps, Brescia)
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L Panzeri, Davide Abu El Khair, Franco Previtali, Marco Martini, Stefano Andreucci, Enrico Casati, Michele D'Amico, Daniele Sechi, D'Amico, M, Casati, E, Andreucci, S, Martini, M, Panzeri, L, Sechi, D, Abu El Khair, D, and Previtali, F
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Pleistocene ,Thermoluminescence dating ,Stratigraphy ,GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,Geochemistry ,Terra-Rossa soil ,04 agricultural and veterinary sciences ,010501 environmental sciences ,Silt ,01 natural sciences ,AGR/14 - PEDOLOGIA ,Absolute dating ,OSL-IRSL dating ,Loess ,MIS1-MIS6 ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Aeolian processes ,Soil horizon ,Glacial period ,Loe ,Geology ,0105 earth and related environmental sciences ,Earth-Surface Processes - Abstract
Purpose: Loess in Northern Italy has been usually considered deposited during the MIS 4-2 period, which corresponds to the last Pleistocene glacial cycle. In particular, no absolute dating evidenced loess depositions older than ca. 89 ka. We investigated two strongly rubified soil profiles in the southern margin of the Alpine range in Lombardy to prove their aeolian origin and age of formation. Methods: We analysed the granulometry of all genetic horizons of these strongly rubified soils, and a total of 8 samples were collected for luminescence dating purpose. Results: Most of the analysed soil horizons were dominated by silt and were characterized by the s-shaped granulometric curve, typical of loess materials. A particularly high clay content evidenced a strong weathering degree. A deep horizon was particularly clay rich, and it was interpreted as a typical Terra-Rossa horizon. Luminescence dates increased with depth, reaching 122 ka for the deepest loess layer and 453 ka (minimum age) for the Terra-Rossa horizon. Conclusions: The deepest observed loess layer represents the oldest quantitatively dated aeolian deposition in Northern Italy up to now.
- Published
- 2021
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119. The relationship between work, health and job performance for a sustainable working life: A case study on older manual employees in an Italian steel factory
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Federica Previtali, Eleonora Picco, Andrea Gragnano, Massimo Miglioretti, Previtali, F, Picco, E, Gragnano, A, Miglioretti, M, Tampere University, and Health Sciences
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Aging ,Health, Toxicology and Mutagenesis ,Public Health, Environmental and Occupational Health ,older worker ,health ,sustainability ,older workers ,job performance ,work ability ,Middle Aged ,Job Satisfaction ,3142 Public health care science, environmental and occupational health ,Steel ,Workforce ,Humans ,Self Report ,Workplace ,Work Performance - Abstract
Background: Supporting and retaining older workers has become a strategic management goal for companies, considering the ageing of the workforce and the prolongation of working lives. The relationship between health and work is especially crucial for older workers with manual tasks, considering the impact of long-standing health impairments in older age. Although different studies investigated the relationship between work ability and job performance, few studies have analysed the impact of workers’ capability to balance between health and work demands, including managerial and organisational support (work-health balance). Considering health as a dynamic balance between work and health demands influenced by both individual and environmental factors, we assess the mediator role of work-health balance in the relation between work ability and job performance, both self-reported and assessed by the supervisor. Methods: The study utilises data from a case study of 156 manual workers, who were 50 years old or older and employed in a steel company in Italy. Data were collected inside the company as an organiational initiative to support age diversity. Results: The findings show that work-health balance partially mediates the relationship between work ability and self-rated job performance, while it does not mediate the relationship with job performance as rated by the supervisor. Supervisor-rated job performance is positively associated with work ability, while it decreases with the increasing perceived incompatibility between work and health. Conclusion: A perceived balance between health and work is a strategic factor in increasing manual older workers’ job performance. For older workers, not only the perceived capability to work is important but also the organisational health climate and supervisor’s support. More studies are needed to verify if managers overlook the importance of health climate and support, as strategic elements that can foster performance for older employees. publishedVersion
- Published
- 2022
120. Desertification: Prevention and Restoration
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Barron J. Orr, Claudio Zucca, Susana Bautista, Franco Previtali, Zucca, C, Bautista, S, Orr, BJ, Previtali, F, Jorgensen, SE, and Orr, B
- Subjects
AGR/14 - PEDOLOGIA ,Geography ,Desertification ,media_common.quotation_subject ,Desertification, soils, semi-arid environments ,Environmental planning ,media_common - Abstract
Approaches and strategies to prevent and reverse desertification can be broadly grouped as prevention, mitigation, and restoration. Desertification is framed within multiscale, coupled human–environmental dynamics, and so must be the approaches for prevention and reversal. The development of integrated analytical methods for evaluating and monitoring interventions is crucial. Recent approaches focus on indicators that relate to ecosystem integrity and services and to human well-being. Lessons learnt in the field from implemented projects are discussed.
- Published
- 2020
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121. Microstructure and palygorskite neoformation in pedogenic calcretes of central Morocco
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Selim Kapur, Muhsin Eren, Selahattin Kadir, Franco Previtali, Erhan Akça, Claudio Zucca, Salvatore Madrau, Zucca, C, Previtali, F, Madrau, S, Kadir, S, Eren, M, Akça, E, Kapur, S, and Çukurova Üniversitesi
- Subjects
Neoformation ,GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,Mineralogy ,engineering.material ,010502 geochemistry & geophysics ,Feldspar ,01 natural sciences ,Palygorskite ,chemistry.chemical_compound ,Caliche ,Micromorphology ,Pedogenic ooid ,Vadoid ,Earth-Surface Processes ,medicine ,Quartz ,Chlorite ,0105 earth and related environmental sciences ,Calcite ,04 agricultural and veterinary sciences ,Caliche, Palygorskite, Neoformation, Pedogenic ooid, Vadoid, Micromorphology ,GEO/06 - MINERALOGIA ,AGR/14 - PEDOLOGIA ,Pedogenesis ,chemistry ,visual_art ,Illite ,040103 agronomy & agriculture ,engineering ,visual_art.visual_art_medium ,0401 agriculture, forestry, and fisheries ,Carbonate ,Geology ,medicine.drug - Abstract
The aim of this research was the micromorphological and mineralogical characterization of calcrete outcrops located in central Morocco, with particular focus on microstructure development and palygorskite formation processes. Two study sites in the Al Haouz Plain (ca 30 km west to Marrakech city) were identified, in an area dominated by Quaternary sedimentary formations including layers cemented by carbonate and widespread calcareous crusts at the surface. The calcrete samples were examined by means of polarizing microscopy from thin sections, scanning electron microscopy / energy-dispersive X-ray spectroscopy (SEM/EDX) from undisturbed samples, and X-ray diffraction (XRD) methods. The matrix of the calcrete material cementing the schist fragments composed of abundant calcite was associated mainly with palygorskite, quartz, and to a lesser extent illite/mica, feldspar, and chlorite. SEM observations indicated that palygorskite mainly occurred as fibres, fibre bundles and networks mainly grown on and/or enclosing calcite rhombohedrons. The EDX spectra of the palygorskite fibres exhibited strong silicon (Si) peaks followed by Al, Mg and Fe peaks. The EDX analysis of calcite rhombohedric crystals exhibited a strong Ca peak, followed by weak peaks of Si, Mg, Al and Fe possibly due to nearby or overlapped palygorskite crystals. One main palygorskite neoformation process was described. Palygorskite was authigenically formed (neoformed) during and after precipitation of calcite from percolating soil solutions in a near-surface setting. Peculiar sub-rounded microstructural units, here designated as pedogenic ooids/pisoids (according to the size), were determined in the matrix of the studied calcretes, associated to pendants and clay-rich rims surrounding them. © 2017 Elsevier B.V.
- Published
- 2018
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122. Aeolian inputs as parent materials for Podzols and terra-rossa soils in a dolomitic landscape in the Italian Alps (Salmezza, BG, Italy)
- Author
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Michele D'Amico, Franco Previtali, Marco Barcella, Enrico Casati, D'Amico, EM, Casati, E, Barcella, M, Previtali, F, and D'Amico, E
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Dolostone, Podzols, Terra rossa, Karst ,Terra rossa ,Soil water ,GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,Geochemistry ,Aeolian processes ,Geology ,Podzol - Abstract
On an unglaciated karst landscape in the Lombard Pre-Alps (Salmezza, Bergamo, Italy), an extremely high pedodiversity occurs across a few hectares on Norian dolostone. The rock is locally enriched in well crystallized sand-grained quartz. The climate of the area is suboceanic, with >1500 mm of annual rainfall, and an average temperature around 6-8°C. Rendzic Leptosols and Phaeozems are developed on the steepest slopes, Podzols, Cambisols and Luvisols on flatter areas, while Rhodic Luvisols/Alisols (Terra-Rossa soils) are found in doline cracks and crevices. The sand-grained quartz content of the parent rock seems to be the main soil differentiating factor: where it is abundant (ca. 10-20% in volume), it is responsible for the genesis of Podzols.We sampled and analyzed 9 soil profiles from the Salmezza area, thus characterizing all pedogenic processes active in the area. In particular, we analyzed standard soil chemical properties (pH, organic carbon, base status and Cation Exchange Capacity, dithionite and oxalate-extractable Fe and Al); we performed a total elemental analysis on most samples and on substrate samples, in order to calculate mass balance and element loss and enrichment; we observed thin sections and performed XRD analysis in powder samples and on the clay fraction of most pedogenic horizons as well.The parent material is a rather pure dolostone, composed of dolomite, locally enriched in quartz. No other minerals have been observed. Very little amounts of Fe, Al and other elements are thus included in the parent rock (almost completely composed of Ca, Mg and Si), often very close to the analytical detection limit. Ca and Mg were almost completely lost during most soil forming processes in this temperate humid climate, while the enrichment in Si, Fe, Al varies broadly amidst the different soils, thanks to different pedogenic processes. Fe and Al, in particular, were up to 120 times more concentrated in Bt and Bhs horizons than in the parent rock. The ratios between stable elements in rocks and soils verifies important inputs of aeolian materials. The values are, however, different also amidst different soils, so an univocal origin of aeolian materials cannot be hypothesized. The mineralogy of the clay fraction is also strongly modified by pedogenesis, so that each soil type is characterized by a different mineralogical assemblage, making it difficult to detect signatures of specific aeolian origins as well.
- Published
- 2020
123. Investigating work-health balance in railway older employees: results of a LPA
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Gragnano, Andrea, Previtali, Federica, Manzi, Claudia, Miglioretti, Massimo, Gragnano, A, Previtali, F, Manzi, C, and Miglioretti, M
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work-health balance, latent profile analysis - Published
- 2018
124. Calcisols and Leptosols
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Ahmet Çilek, Mesut Budak, Franco Previtali, E. A. Fitzpatrick, Salih Aydemir, Ahmet Karakeçe, Erhan Akça, Claudio Zucca, Pandi Zdruli, Selahattin Kadir, Muhsin Eren, Selim Kapur, Hikmet Günal, Kapur, S, Akca, E, Gunal, H, Aydemir, S, Kadir, S, Eren, M, Zucca, C, Previtali, F, Zdruli, P, Cilek, A, Budak, M, Karakece, A, and Fitzpatrick, E
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Earth science ,Petrocalcic Horizon ,04 agricultural and veterinary sciences ,Calcisols, Leptosols, soils, Turkey ,010502 geochemistry & geophysics ,complex mixtures ,01 natural sciences ,Semi-arid climate ,Soil water ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Environmental science ,Cover (algebra) ,0105 earth and related environmental sciences - Abstract
Topography seems to be a major and consistent soil-forming factor that has modified in the past and/or modifies in the present the soils of Turkey. Thus, the common sloping topography together with the semiarid climate and moderate vegetative cover dominant are mediating the progress of soil formation in the country.
- Published
- 2018
125. Arenosols
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Hasan Özcan, Hüseyin Ekinci, Erhan Akça, Osman Polat, Muhsin Eren, Selahattin Kadir, Ali Sungur, Timuçin Everest, Franco Previtali, Selim Kapur, Kapur, S, Akca, E, Gunal, H, Ozcan, H, Ekinci, H, Polat, O, Eren, M, Kadir, S, Sungur, A, Everest, T, and Previtali, F
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AGR/14 - PEDOLOGIA ,Arenosols, soils, Turkey - Abstract
The Reference Soil Group of the Arenosols consists of sandy soils. These are the soils developed from residual sands, in situ formed after weathering of old usually quartz-rich soil material or rock, and soils developed in recently deposited sands as they occur in deserts and beach lands.
- Published
- 2018
126. Luvisols
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San, M, Kurmen, Y, Akca, E, Eren, M, Kadir, S, Gunal, H, Zucca, C, Atalay, I, Kaya, Z, PREVITALI, FRANCO, Zdruli, P, Kapur, S, Fitzpatrck, EA, Kapur, S, Akca, E, Gunal, H, San, M, Kurmen, Y, Eren, M, Kadir, S, Zucca, C, Atalay, I, Kaya, Z, Previtali, F, Zdruli, P, and Fitzpatrck, E
- Subjects
Luvisols, soils, Turkey - Abstract
Chromic and Rhodic Luvisols, otherwise known as the Red Mediterranean Soils or the Terra Rossa, show marked textural differences and genetic peculiarities within their profile.
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- 2017
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127. Geo-pedological contribution to the reconstruction of Holocene activity of Chaitén volcano (Patagonia, Chile)
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Luca Trombino, Ludek Šefrna, Franco Previtali, A Tunesi, Michele D'Amico, Enrico Casati, Casati, E, D'Amico, M, Šefrna, L, Trombino, L, Tunesi, A, and Previtali, F
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010506 paleontology ,Geochemistry ,Pyroclastic rock ,010502 geochemistry & geophysics ,01 natural sciences ,Paleosol ,law.invention ,law ,Pumice ,Rhyolite ,Radiocarbon dating ,Chaitén volcano ,Tephra ,Holocene ,0105 earth and related environmental sciences ,Earth-Surface Processes ,Paleosols, Geochemistry, Tephra, Chaitén volcano, Michinmahuida volcano ,geography ,geography.geographical_feature_category ,Geology ,Michinmahuida volcano ,AGR/14 - PEDOLOGIA ,Volcano - Abstract
On May 2, 2008, the Chaiten volcano, located in Chilean Patagonia, thought to be inactive for almost 10,000 years, erupted, emitting pyroclastic materials (ash and pumice) of rhyolitic composition. The ejected materials partially burned the forest vegetation in a wide radius, blocked the river systems, causing local flooding, and forced the majority of the inhabitants to abandon the nearby village of Chaiten. In 2005, 2009, the authors surveyed and sampled a number of paleosols and tephra sections located just north of the village. The present work shows the results of pedological, micromorphological, petrographic, and geochemical analyses, accompanied by radiocarbon dating, The studies have shown the presence of different soil complexes (Andosols), developed from pyroclastic materials and separated by erosional surfaces. Under the modern soil, consisting only of A horizons, paleosols follow with pedogenized horizons overlying altered and hardened volcanic materials. The mineralogical and geochemical analyses confirmed the sequence of these complexes and distinguished a double origin of the materials from which they developed: the most recent and superficial soil, although not significantly affected by the depositions of the last eruption, presented an evident geochemical and mineralogical affinity with tephra of the Chaiten volcano, differently from those of the deeper paleosols which have been found to derive from the ejecta of Michinmahuida volcano. The evolutionary model of the soils of the area has also been confirmed by the dates measured along the studied sections that are comparable with the dates of volcanic events during the Holocene already ascertained by the most recent volcanological studies.
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- 2019
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128. I suoli: risorsa naturale difficilmente riproducibile
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PREVITALI, FRANCO and Previtali, F
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AGR/14 - PEDOLOGIA ,Suoli, urbanizzazione, tutela - Abstract
il consumo di suolo in Italia ha raggiunto livelli di guardia. Conoscenza e protezione dei suoli divengono sempre più urgenti e indispensabili.
- Published
- 2017
129. Soil degradation by land use change in an agropastoral area in Sardinia (Italy)
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Franco Previtali, Annalisa Canu, Claudio Zucca, Zucca, C, Canu, A, and Previtali, F
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Hydrology ,Land use ,Soil organic carbon ,Soil organic matter ,Soil chemistry ,Soil science ,BQI (Biological Quality Index) ,Soil carbon ,Silt ,AGR/14 - PEDOLOGIA ,Tillage ,Microporosity ,Soil retrogression and degradation ,Soil water ,Soil erosion ,Environmental science ,Agropastoral practice ,Deforestation ,Earth-Surface Processes - Abstract
In recent decades the clearing of Mediterranean maquis along with the creation of new pastures has been a major factor of land degradation in Sardinia (Italy). This was due to an inadequate implementation of agricultural policies. Consequently, tillage and water erosion intensified over a wide area. The present work assesses the impacts of land use change on soil properties in a representative area of central-eastern Sardinia. Paired forest and pasture sampling sites were selected in relation to present land use, land suitability, and land use history. Different soil properties were considered: physical (sand, silt, clay, soil thickness, bulk density, and penetration resistance), chemical (pH, OC, N, C/N, Ca, Mg, Na, K, CEC, and BS), biological (BQI), and micromorphological (microporosity and microstructure). The comparison of forest and pasture soils showed a significant soil loss (in terms of soil thickness, -22%), and a clear decrease in organic carbon storage (-64% on average). An increase in bulk density (+. 44%) and a change in microporosity and its vertical distribution were also observed, respectively by field measurements and micromorphological quantification on digital images. © 2010 Elsevier B.V.
- Published
- 2010
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130. Buried palaeosols of NW Sardinia (Italy) as archives of the Late Quaternary climatic fluctuations
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Yakup Kenan Koca, Claudio Zucca, Salvatore Madrau, Franco Previtali, Sameh M. Shaddad, Selim Kapur, Ihsan Akşit, Stefano Andreucci, Vincenzo Pascucci, Çukurova Üniversitesi, Zucca, C, Andreucci, S, Akşit, I, Koca, Y, Madrau, S, Pascucci, V, Previtali, F, Shaddada, S, and Kapur, S
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GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,Weathering ,Calcrete ,Early würm ,Geosol ,Micromorphology ,OSL ,Palygorskite ,Earth-Surface Processes ,Sand dune stabilization ,AGR/14 - PEDOLOGIA ,Paleontology ,Pedogenesis ,Interglacial ,GEO/02 - GEOLOGIA STRATIGRAFICA E SEDIMENTOLOGICA ,Stadial ,Glacial period ,Quaternary ,Geology ,Colluvium - Abstract
A multi-disciplinary approach was performed to investigate two compound geosols included between wind-blown deposits at the top, and interglacial (MIS 5) beach sediments at the bottom, located along the Alghero coast (North-western Sardinia, Italy). A sedimentological and morphological study was carried out on the profile in the field, and samples collected on the main pedomembers were subjected to several laboratory analyses, consisting of physical and chemical determinations on bulk samples, mineralogy (XRD), micromorphology on undisturbed samples (thin Section, SEM), and EDAX-micro probe analyses. Dating was performed by means of Optically Stimulated Luminescence (OSL). The studied geosols show the evidence of a complex pedosedimentary evolution. Around 80 to 70. ka the lower geosol underwent weathering and clay illuviation (wet and warm conditions), followed by calcification-recalcification processes (dry-contrasted), and finally by strong bioturbation. Around 70. ka the onset of the glacial period (MIS 4) is marked by the deposition of a sand dune, capping the lower geosol. These results indicate that the coastal area of the central Mediterranean kept the relatively warm conditions typical of the interglacial climate for most of the Early Würm and reached cold conditions only at about 70. ka, possibly in relation to the rapid cooling of the Heinrich event H7. The upper geosol developed on colluvial material including abundant pedorelicts and reddish earth material, deposited around 50. ka. Before being buried by aeolian sand around 43. ka, this deposit underwent pedogenesis phases possibly associated to Middle Würm interstadial events, indicating that in the study area these events were intense enough to influence pedogenesis. © 2014 Elsevier B.V. Fund for Astrophysical Research The study has been supported by the F.A.R. funds of the Italian Ministry of University and Research. Financial support to Vincenzo Pascucci has been provided by the Russian Government Program of Competitive Growth of Kazan Federal University. The authors kindly acknowledge the valuable efforts of M. Deroma (Sassari University) and Fabio Moia (Milano-Bicocca University) for the physical and chemical analyses. The authors are indebted to the anonymous reviewers for the highly constructive contributions they made in order to refine the paper.
- Published
- 2014
131. Challenges in Assessing and Managing Geo-hydrological Risk Related to Natural and Anthropogenic Pressures in Alpine Ski Resorts
- Author
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Carmen de Jong, Franco Previtali, Gloria Carletti, Lollino, G, Manconi, A, Guzzetti, F, Culshaw, M, Bobrowsky, P, Luino, F, de Jong, G, Previtali, F, and Carletti, G
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geography ,geography.geographical_feature_category ,Infrastructure, artificial snow, ski slope stability ,business.industry ,GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,Environmental resource management ,Water storage ,Climate change ,Landslide ,Snow ,Debris ,AGR/14 - PEDOLOGIA ,Rockfall ,Environmental protection ,Urbanization ,Natural hazard ,business - Abstract
Alpine ski resorts attract large temporary populations at relatively high altitudes, causing both urban and ski infrastructure development in ecologically vulnerable regions frequently subject to geo-hydrological risk. This study deals with the impacts of urbanization comprising housing, roads, parking and heliports, impacts of ski runs such as slope grooming and drainage and impacts of artificial snow production for example snow grooming, water storage reservoirs and water pipelines in the French and Italian Alps. Ski resort infrastructure is both at risk from natural hazards including landslides, rockfalls, avalanches and floods and from artificially induced hazards related to artificial snow infrastructure and ski slope manipulation for instance landslides, debris flows and erosion. Managing such risks is often only partially successful after 4-5 decades, however many impacts are irreversible. Climate change and intensification of ski resort development is likely to increase geo-hydrological risks in future.
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- 2014
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132. Assessing Impacts of Climate Change, Ski Slope, Snow and Hydraulic Engineering on Slope Stability in Ski Resorts (French and Italian Alps)
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Franco Previtali, Carmen de Jong, Gloria Carletti, de Jong, C, Carletti, G, Previtali, F, Lollino, G, Manconi, A, Clague, J, Shan, W, and Charlie, M
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Hydrology ,geography.geographical_feature_category ,Hydraulic engineering ,GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,Infiltration ,Climate change ,Landslide ,Snow ,Permeability ,AGR/14 - PEDOLOGIA ,Rill ,Infiltration (hydrology) ,Permeability (earth sciences) ,Geography ,Ski slope stability ,Slope stability ,Soil propertie ,Artificial snow - Abstract
Climate change and increased skier density is increasing ski run reworking, use of artificial snow and snow grooming. Few studies are available on these engineering impacts on slope stability. Therefore, the soil properties, compaction and infiltration characteristics were investigated on ski slopes and compared to natural sites for three different ski resorts (Les Menuires, La Rosière and Foppolo) in the French and Italian Alps. The results show that soil properties differ substantially, with lower nitrogen and carbon content and higher pH on ski runs. Soil compaction is up to three times higher and infiltration takes up to four times longer on ski slopes compared to natural sites. Some new ski slopes were even 100 % impermeable. This explains why ski slopes are more prone to landslides, sheet, rill and gully erosion and have a distinct vegetation cover.
- Published
- 2014
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133. Mitigating land degradation in Mediterranean agro-silvo-pastoral systems: a GIS-based approach
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Giuseppe Pulina, Massimo D'Angelo, Giuseppe Enne, Franco Previtali, Luca Sigfrido Percich, Claudio Zucca, Salvatore Madrau, D'Angelo, M, Enne, G, Madrau, S, Percich, L, Previtali, F, Pulina, G, and Zucca, C
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Mediterranean climate ,Land use ,Agroforestry ,business.industry ,Land management ,Land cover ,Woodland ,Mediterranean ,GIS ,AGR/14 - PEDOLOGIA ,agropastoral system ,Land degradation ,Environmental science ,Environmental impact assessment ,Land development ,business ,Earth-Surface Processes - Abstract
Agro-silvo-pastoral systems were studied in central–eastern Sardinia (Italy) to assess their environmental impact in marginal Mediterranean areas. Land cover changes between 1955 and 1996 were assessed by using multitemporal aerial coverages. The shift from extensive to semi-extensive production systems resulted in a decrease in woodland and in a marked increase in artificial pastures. Related field surveys highlighted widespread land degradation processes in areas where pasture amendment actions on land characterised by steep or fairly dissected morphology had been carried out. Starting from a past land suitability classification developed at farm level, a scheme for the evaluation of the land suitability to the creation of new pastures at regional scale was developed by using GIS methodologies. The scheme classifies the land into five land suitability classes as defined in the FAO Framework for Land Evaluation (highly suitable, moderately suitable, marginally suitable, currently not suitable, permanently unsuitable). The land suitability classification performed by the GIS model showed high accuracy if compared to the traditional procedure. The comparison between the land suitability and current land uses allows the identification of areas sensitive to land degradation where land resource conservation programmes can be proposed.
- Published
- 2000
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134. Pedoenvironments of the Mediterranean Countries: Resources and Threats
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Franco Previtali, Kapur, S, Erşahin, S, and Previtali, F
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AGR/14 - PEDOLOGIA ,Mediterranean climate ,Cultural heritage ,Soils, Mediterranean countries, Environment, Resources, Threats ,Flora ,Geography ,Environmental protection ,Fauna ,Urbanization ,Global warming ,Ecosystem ,Consumption (sociology) - Abstract
The Mediterranean regions possess, besides a great cultural heritage and an advanced economy and technology, remarkable environmental resources, consisting of a variety of soils, landscapes, waters, fauna, and flora. But high anthropic pressure, global warming, the heterogeneity of state interventions, even urbanization and “littoralization”, as well as some rather short-sighted policies, are jeopardizing the quality and conservation of many ecosystems and the productive capacities of soils. In this paper the peculiar properties of the Mediterranean soils and the degradation and consumption processes closely related to anthropic activities and the cycles of erosion are briefly examined.
- Published
- 2013
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135. Shape and intraporosity of topsoil aggregates under maquis and pasture in the Mediterranean region
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Mahmut Dingil, Selim Kapur, Nadia Vignozzi, Claudio Zucca, Salvatore Madrau, Franco Previtali, Zucca, C, Vignozzi, N, Madrau, S, Dingil, M, Previtali, F, and Çukurova Üniversitesi
- Subjects
Grazing ,Mediterranean climate ,geography ,Topsoil ,geography.geographical_feature_category ,Soil Science ,Soil science ,micromorphology, intraped porosity, soil degradation, deforestation, grazing ,Plant Science ,Vegetation ,Soil degradation ,Pasture ,AGR/14 - PEDOLOGIA ,Soil structure ,Soil retrogression and degradation ,Intraped porosity ,Micromorphology ,Environmental science ,Deforestation ,Trampling - Abstract
The clearing of Mediterranean maquis along with the creation of new pasture land has been an important factor of soil and land degradation in the Mediterranean region. The present research compared soil aggregates and their intraporosity in paired pasture/maquis plots in central E Sardinia (Italy), to study the impact of land use change on soil structure. Undisturbed surface horizons were sampled for thin-section analysis. Aggregate shape was compared and intraporosity was studied for representative aggregates at different depths. Furthermore, the interaction of root activity and grazing under pasture and maquis cover was discussed. The outcomes revealed a complex interplay of trampling and root activity effects. A decrease (-44%) in total voids (regular pores), along with higher aggregate regularity, was observed under pasture in the 0-2cm layer, and an increase (+261%) in 50-100 µm planar (elongated) pores was determined in the 2-4cm layer, suggesting a possible surface compaction due to trampling and an increased subsurface fine root activity by the grassland vegetation. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
- Published
- 2013
136. Edaphic influences of ophiolitic substrates on vegetation in the Western Italian Alps
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Franco Previtali, Michele E. D’Amico, D'Amico, M, and Previtali, F
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Plant growth ,Ecology ,Soil Science ,Plant community ,Edaphic ,Plant Science ,Vegetation ,Subarctic climate ,Serpentine syndrome ,AGR/14 - PEDOLOGIA ,Soil-vegetation relationships ,Boreal ,Productivity (ecology) ,Soil water ,Environmental science ,CART ,Bioavailable Nickel,CART, CCA,GLM, serpentine syndrome, soil-vegetation relationships ,GLM ,CCA ,Bioavailable Nickel - Abstract
Background and aims: Soils derived from serpentinite (serpentine soils) often have low macronutrient concentrations, exceedingly low Ca:Mg molar ratios and high heavy metal concentrations, typically resulting in sparse vegetative cover. This combined suite of edaphic stresses is referred to as the "serpentine syndrome." Although several plant community-level studies have been conducted to identify the most important edaphic factor limiting plant growth on serpentine, the primary factor identified has often varied by plant community and local climate. Few studies to date have been conducted in serpentine plant communities of alpine or boreal climates. The goal of our study was to determine the primary limiting edaphic factors on plant community species composition and productivity (cover) in the alpine and boreal climate of the Western Alps, Italy. Methods: Soil properties and vegetation composition were analyzed for several sites underlain by serpentinite, gabbro, and calc-schist substrates and correlated using direct and indirect statistical methods. Results: Boreal forest soils were well-developed and tended to have low pH throughout the soil profile resulting in high Ni availability. Alpine soils, in comparison, were less developed. The distinct serpentine plant communities of the Western Alps are most strongly correlated with high levels of bioavailable Ni associated with low soil pH. Other factors such as macronutrient deficiency, low Ca:Mg molar ratio and drought appear to be less important. Conclusions: The strong ecological influence of Ni is caused by environmental conditions which increase metal mobilization.
- Published
- 2011
137. An Anthroscape from Morocco: Degraded Rangeland Systems and Introduction of Exotic Plant Material and Technology
- Author
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Franco Previtali, E. Akça, Claudio Zucca, Salvatore Madrau, S. Kapur, Kapur, S, Eswaran, H, Blum, WEH, Zucca, C, Previtali, F, Madrau, S, Akça, E, and Çukurova Üniversitesi
- Subjects
Exotic plant ,land restoration ,biology ,Agroforestry ,ved/biology ,media_common.quotation_subject ,Technical success ,ved/biology.organism_classification_rank.species ,biology.organism_classification ,Shrub ,rangeland degradation ,Oldman saltbush ,AGR/14 - PEDOLOGIA ,Geography ,Atriplex nummularia ,Desertification ,Land restoration ,Grazing ,Rangeland ,media_common - Abstract
Fodder shrub plantations (Atriplex nummularia) were extensively introduced to rehabilitate degraded rangeland and to mitigate desertification in the Rural Municipality of Ouled Dlim (Marrakech Province, Morocco). The original rural landscape, characterised by sparse or absent natural vegetation cover due to a long history of intense grazing activities, has been deeply modified during the last decade by these agroforestry interventions. The purpose of this contribution is to describe the occurred environmental changes under the perspective of the Anthroscape concept, by giving emphasis to the description of the Anthroscape units affected by the plantations and to the geo-pedological processes that influenced the technical success obtained by the interventions. Some critical aspects and possible scenarios of the future evolution of the anthroscapes are also discussed. © Springer-Verlag Berlin Heidelberg 2011.
- Published
- 2011
138. Land Suitability for Crop Options Evaluation in Areas Affected by Desertification: The Case Study of Feriana in Tunisia
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Claudio Zucca, Salvatore Madrau, F. Julitta, A.M. Urgeghe, Franco Previtali, Zdruli, P, Pagliai, M, Kapur, S, Faz Cano, A, Madrau, S, Zucca, C, Urgeghe, A, Julitta, F, and Previtali, F
- Subjects
Agroforestry ,Land suitability ,media_common.quotation_subject ,Olive trees ,Soil survey ,Crop ,Crop suitability · Land evaluation · Drought-resistant shrubs · Soil survey · GIS · Tunisia ,AGR/14 - PEDOLOGIA ,Geography ,Fodder ,Desertification ,Land degradation ,Rangeland ,media_common - Abstract
The study was carried out in the Tunisian site of a Cooperation Project, aiming to implement techniques for combating desertification. The approach of the project is based on promoting drought-resistant fodder shrubs as an alternative crop, in areas where the expansion of traditional cereal and olive trees in not suited rangelands constitute a land degradation factor. A land evaluation procedure was implemented based on a Map of Pedo-morphologic Units purposely created and on GIS based suitability models specifically adapted to the local conditions. The suitability maps obtained showed that about 18% of present rainfed cereal crops and 12% of olive plantations are located in not suited areas. The results also highlight the areas where further crop development could be more or less advisable and fodder shrubs could be introduced as an alternative and sustainable income generating option.
- Published
- 2010
139. Per un'altra campagna. Riflessioni e proposte sull'agricoltura periurbana
- Author
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PREVITALI, FRANCO, Bocchi, S, Corsi, S, Ferretto, M, Mazzocchi, C, and Previtali, F
- Subjects
AGR/14 - PEDOLOGIA ,Agricoltura, Campagna, Spazio peri-urbano ,AGR/02 - AGRONOMIA E COLTIVAZIONI ERBACEE ,AGR/08 - IDRAULICA AGRARIA E SISTEMAZIONI IDRAULICO-FORESTALI ,AGR/01 - ECONOMIA ED ESTIMO RURALE ,IUS/03 - DIRITTO AGRARIO - Abstract
Analisi e proposte per la tutela del patrimonio agricolo nelle aree periurbane italiane
- Published
- 2010
140. Mountain Anthroscapes, the Case of the Italian Alps
- Author
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Franco Previtali, Kapur, S, Eswaran, H, Blum WEH, and Previtali, F
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AGR/14 - PEDOLOGIA ,Anthroscapes, Italian Alps, soil, landscape ,Geography ,Physical geography - Abstract
After an attempt of a definition proposal, some typical and frequently occurring anthroscapes in the Italian Alps are here examined. By referring to the original landscapes, such man-made landscapes are divided into positive/ameliorative and sustainable, on one hand, and worsening/negative and unsustainable on the other hand, depending on the type of impact that should have generated them.
- Published
- 2010
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141. Heavy metals and biological properties of subalpine soils on ophiolites in the Italian Western Alps
- Author
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Michele E. D’Amico, Andrea Rossetti, Francesca Calabrese, Franco Previtali, D'Amico, M, Calabrese, F, Rossetti, A, and Previtali, F
- Subjects
Ecology ,Edaphic ,Ophiolite ,Podzol ,AGR/14 - PEDOLOGIA ,Boreal ,Ultramafic rock ,Soils, ophiolites, heavy metals, biology ,Biological property ,Environmental chemistry ,Soil water ,Environmental science ,Mafic ,Ecology, Evolution, Behavior and Systematics - Abstract
Soils on ultramafic rocks are usually colonized by plant species and communities adapted to high heavy-metal content and low Ca/Mg ratio. However, the effects of metal speciation on microbial activity and arthropodal communities have scarcely been studied, especially under coniferous forests in boreal or subalpine areas. Six typical subalpine soils, in the ophiolitic area of Mont Avic Natural Park, located in the Western Italian Alps, were studied in order to verify the chemical speciation of Ni, Co, Mn, and Cr and their effects on soil biological properties and microbial activity. Five soils, developed from till composed of mafic and ultramafic materials, showed strong signs of podzolization, while the sixth was polluted by mine spoil. All the samples had high metal content, high acidity, and high metal mobility and bioavailability. These edaphic properties deeply influenced both arthropodal communities and microbial activity, all of which were strictly correlated with parent material and bioavailable Ni, Co, and Mn
- Published
- 2009
142. Podzolisation de matèriaux ophiolitiques dans les Alpes Occidentales Italiennes: propriétés physiques, chimiques et minéralogiques
- Author
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D'AMICO, MICHELE EUGENIO, PREVITALI, FRANCO, Julitta, F, Cantelli, D., D'Amico, M, Julitta, F, Previtali, F, and Cantelli, D
- Subjects
AGR/14 - PEDOLOGIA ,sols, podzolisation, roches ophiolitiques - Abstract
L'étude a demontré que meme sur roches ophiolitiques, en conditions environnementales favorables, la podzolisation peut se devélopper
- Published
- 2007
143. Impact of 40 years poplar cultivation on soil carbon stocks and greenhouse gas fluxes
- Author
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F. Previtali, Adrian Leip, Giorgio Matteucci, G. Seufert, C. Ferré, Dipartimento di Scienze dell'Ambiente e del Territorio (DISAT), Università degli Studi di Milano [Milano] (UNIMI), JRC Institute for Environment and Sustainability (IES), European Commission - Joint Research Centre [Ispra] (JRC), Ferré, C, Leip, A, Matteucci, G, Previtali, F, and Seufert, G
- Subjects
Carbon, soil, poplar ,010504 meteorology & atmospheric sciences ,Soil texture ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences ,01 natural sciences ,Soil respiration ,[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] ,Ecosystem ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment ,0105 earth and related environmental sciences ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] ,Agroforestry ,Forestry ,04 agricultural and veterinary sciences ,Soil carbon ,15. Life on land ,Tillage ,Deciduous ,13. Climate action ,Greenhouse gas ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Environmental science ,BIO/07 - ECOLOGIA ,Spatial variability - Abstract
Within the JRC Kyoto Experiment in the Regional Park and UN-Biosphere Reserve "Parco Ticino" (North-Italy, near Pavia), the soil carbon stocks and fluxes of CO2, N2O, and CH4 were measured in a poplar plantation in comparison with a natural mesohygrophilous deciduous forest nearby, which represents the pristine land cover of the area. Soil fluxes were measured using the static and dynamic closed chamber techniques for CH4 N2O, and CO2, respectively. We made further a pedological study to relate the spatial variability found with soil parameters. Annual emission fluxes of N2O and CO2 and deposition fluxes of CH4 were calculated for the year 2003 for the poplar plantation and compared to those measured at the natural forest site. N2O emissions at the poplar plantation were 0.15$plusmn;0.1 g N2O m-2 y-1 and the difference to the emissions at the natural forest of 0.07±0.06 g N2O m-2 y-1 are partly due to a period of high emissions after the flooding of the site at the end of 2002. CH4 consumption at the natural forest was twice as large as at the poplar plantation. In comparison to the relict forest, carbon stocks in the soil under the poplar plantation were depleted by 61% of surface (10 cm) carbon and by 25% down the profile under tillage (45 cm). Soil respiration rates were not significant different at both sites with 1608±1053 and 2200±791 g CO2 m-2 y-1 at the poplar plantation and natural forest, respectively, indicating that soil organic carbon is much more stable in the natural forest. In terms of the greenhouse gas budget, the non-CO2 gases contributed minor to the overall soil balance with only 0.9% (N2O) and -0.3% (CH4 of CO2-eq emissions in the natural forest, and 2.7% (N2O) and -0.2% of CO2-eq. emissions in the poplar plantation. The very high spatial variability of soil fluxes within the two sites was related to the morphology of the floodplain area, which was formed by the historic course of the Ticino river and led to a small-scale (tenth of meters) variability in soil texture and to small-scale differences in elevation. Differences of site conditions are reflected by differences of inundation patterns, ecosystem productivity, CO2 and N2O emission rates, and soil contents of carbon and nitrogen. Additional variability was observed during a flooding event and after fertilisation at the poplar site. Despite of this variability, the two sites are comparable as both originate from alluvial deposits. The study shows that changes in soil carbon stocks and related fertility are the most visible phenomena after 40 years of land use change from a pristine forest to a fast growing poplar plantation. Therefore, the conservation and careful management of existing carbon stocks deserves highest priority in the context of the Kyoto Protocol.
- Published
- 2005
144. Soil development along two altitudinal transects from north-west to south-east of the Issyk-Kul Lake (Northern and Central Tjan-Šan, Kazakhstan-Kyrgyzstan)
- Author
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COMOLLI, ROBERTO, PREVITALI, FRANCO, Sefrna, L., Comolli, R, Previtali, F, and Sefrna, L
- Subjects
AGR/14 - PEDOLOGIA ,Soil ,Vegetation ,Tjan-Šan (Kazakhstan-Kyrgyzstan) - Abstract
In this work two altitudinal sequences, located in the northern and central mountain chain of Tjan-Šan, have been compared. The described areas are partially in Kazakhstan and partially in Kyrgyzstan. The main purpose of the surveys was to study the relations among soils, geomorphology, lithology and vegetation cover, to identify modern and past soil formation processes. For this reason, 12 soil sites among the most representative pedoenvironments recognized have been described, analysed and interpreted. The survey showed that, even at very high elevations, pedological processes, similar to those responsible for the development of steppe chernozems, proved to be active. This is probably due also to the presence of aeolian silt covers, deposited in recent and in the past. Moreover, even over the most acidic substrata and under the coniferous forest, we noticed the weakness of podzolization features. The process is retarded by abundance of bases within the parent material, and by their abundant release from vegetation.
- Published
- 2003
145. SIT di base e SIT dedicati
- Author
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Toccolini, A, Fumagalli, N, PREVITALI, FRANCO, Percich, L, BONOMI, TULLIA, DE AMICIS, MATTIA GIOVANNI MARIA, Sartori,F, Toccolini, A, Fumagalli, N, Previtali, F, Percich, L, Bonomi, T, and DE AMICIS, M
- Subjects
GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA ,SIT idrogeologico, database idrogeologico - Published
- 2001
146. Pedosequences in northern Tien Shan Mountain Belt (Kazakhstan-Kirgizstan)
- Author
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PREVITALI, FRANCO, Assi, I, Sefrna, L., Previtali, F, Assi, I, and Sefrna, L
- Subjects
AGR/14 - PEDOLOGIA ,Tien Shan, soils, vegetation, Kazakhstan-Kirgizstan - Abstract
Some selected soil profiles and environmental conditions of a sector of the Tien Shan mountain belt, between Kazakhstan and Kirgizstan, were investigated. Main target of the research was to give information about soil classification and distribution, and about changes in chemical, biochemical and physical properties with elevation, lithology, vegetation, and climate
- Published
- 1997
147. Seismipedoturbations in Volcanic Soils in North-Eastern Ecuador
- Author
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Franco Previtali and Previtali, F
- Subjects
Topsoil ,geography ,geography.geographical_feature_category ,Geochemistry ,Mantle (geology) ,Volcanic soil ,AGR/14 - PEDOLOGIA ,Volcano ,pedoturbation ,earthquake ,Soil water ,Soil horizon ,Ecuador ,Geomorphology ,Geology ,Earth-Surface Processes - Abstract
Two earth tremors caused topsoil and turf overturning, cracks in the ash mantle, and probably also cracks in soil profiles. In seismically active regions such episodic events may substantially influence soil profile development.
- Published
- 1992
148. La magnesite di Kutahya (Turchia Occidentale)
- Author
-
PREVITALI, FRANCO and Previtali, F
- Subjects
Magnesite, ophiolites, Turkey ,GEO/09 - GEORISORSE MINERARIE E APPLICAZIONI MINERALOGICO-PETROGRAFICHE PER L'AMBIENTE E I BENI CULTURALI - Abstract
In the western part of Turkey near Kutahya, between Ankara and lzmir, frequent magnesite mineralizations within ophiolitic series outcrop. This work reports the results of a first geological and mining survey on two intensely mineralized areas
- Published
- 1975
149. Le mineralizzazioni a baritina del Tauro meridionale
- Author
-
PREVITALI, FRANCO and Previtali, F
- Subjects
Baritine, galena, Tauro, Turkey ,GEO/09 - GEORISORSE MINERARIE E APPLICAZIONI MINERALOGICO-PETROGRAFICHE PER L'AMBIENTE E I BENI CULTURALI - Abstract
In the work are described the baritine mineralizations, often associated with galena, which occurr numerous in the mountain range of southern Tauro in Turkey
- Published
- 1970
150. Studio geo-minerario del giacimento di quarzite di Kalediran Koy (Gazipasa, Turchia)
- Author
-
PREVITALI, FRANCO and Previtali, F
- Subjects
Quarzite, Turchia, Gazipasa ,GEO/09 - GEORISORSE MINERARIE E APPLICAZIONI MINERALOGICO-PETROGRAFICHE PER L'AMBIENTE E I BENI CULTURALI - Published
- 1969
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