Search

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Carsologica Sinica is the property of Institute of Karst Geology, CAGS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Botanical Research is the property of Bulletin of Botanical Research Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South China Normal University (Natural Science Edition) / Huanan Shifan Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of South China Normal University (Natural Science Edition) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】 Rocky desertification was a major ecological problem in southwest China, which restricted agricultural development. Exploring the relationship between the ecological effect of rocky desertification control measures and agricultural development was of great significance for adjusting agricultural structure scientifically and promoting sustainable development of rocky desertification areas. 【Method】 The study selected 46 prefectures (cities) in Yunnan, Guizhou and Sichuan in southwest China in 2005, 2010 and 2018 as the research objects. Comprehensive Evaluation method and Coupling Coordination Degree model were used to analyze the spatial and temporal variation of agricultural development levels and the effect of ecological remediation of rock desertification in the investigated regions in the past 13 years. The spatial autocorrelation model was used to explore the spatial correlation pattern of their coupling coordination degree. 【Result】 From 2005 to 2018, the remediation effect of rocky desertification in 46 prefectures (cities) of Yunnan, Guizhou and Sichuan provinces showed four patterns: Continuous increase, continuous decline, first increase and then decrease, first decrease and then increase. The high values were concentrated in the central parts of Sichuan and Yunnan, and the low values were concentrated in Guizhou province, showing a decreasing pattern from west to east; The agricultural development levels showed that three development patterns: Continuous increase, continuous decrease, first increase and then decrease. Spatially, the high values were concentrated in the middle of Sichuan province, while the low values were mainly distributed in Yunnan and Guizhou provinces, showing the situation of high in the middle and low in the periphery. The coupling coordination degree between the ecological remediation effect of rocky desertification control and agricultural development were between 0.585 and 0.790, both of which were in the coordination stage. In terms of temporal changes, the coordination degree of 11 prefectures (cities) such as Qujing and Zunyi gradually improved, 4 prefectures (cities) such as Kunming showed slight degradation, and the rest prefectures (cities) did not change. In terms of space, the coupling coordination degree of Chengdu, Ya’an and other central regions in Sichuan and Kunming, Yuxi and other central regions in Yunnan was stable and high, showing the characteristics of high in the middle and low around. There was a positive spatial correlation between the ecological remediation effect of rocky desertification control and the coupling coordination degree of agricultural development in each state (city).Moran′s I value increased first and then decreased, and the overall change decreased from 0.315 to 0.218. The prefectures (cities) with local correlation were mainly distributed in central parts of Yunnan, Sichuan and western Guizhou, including 23 prefectures (cities) such as Chengdu. 【Conclusion】 There was a significant coupling and coordination relationship between the ecological remediation effects of rock desertification control and agricultural development in regions of Yunnan, Guizhou and Sichuan, but there was still some space for improvement. In addition, the spatial differences were large, and the coupling coordination degree of underdeveloped regions was low and remote. In the future, it can be considered to promote the coordinated progress of all regions from the aspects of policy-making, resource input and so on. The results could provide scientific basis for the formulation of agricultural development strategy and prevention strategy of rocky desertification in southern China, and might be helpful in rural revitalization. [ABSTRACT FROM AUTHOR]

Copyright of Mountain Research (10082786) is the property of Mountain Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mountain Research (10082786) is the property of Mountain Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Territorial space is the important carrier of urban construction, agricultural activities, and ecological protection. It is necessary to reasonably promote the coordination, moderation, and sustainable utilization of territorial space. The territorial development of different function types has posed serious conflicts on the regional economy and ecological system, especially in karst areas with fragile ecological environment and high poverty rate. Taking Guangnan County, a typical southwest karst area, as an example, this study aims to realize the coordinated development of territorial space in research regions. A series of geospatial modeling and statistical analysis tools were combined to propose the urban-agricultural-ecological functions coordination method, and the “dual evaluations” method of territorial space in karst areas. According to the environment situation of natural resource and regional planning, amendment rules was also formulated for conflict spaces, while a comprehensive optimization method was proposed for function areas of territorial space. This comprehensive method systematically combined the urban-agricultural-ecological functions coordination and the “dual evaluations”, constructed comprehensive optimization patterns of territorial space function areas, and divided different types of territorial space function area in karst areas. The results showed that: 1) In the most suitable level and less, the ecological suitability was the maximum, accounting for 61.21%, which was mainly distributed in the north and east. The suitability of urban development was the minimum, accounting for 27.81%, which was mainly distributed in the middle and south. The suitability proportion of agricultural development was 49.80%, which was mainly distributed in the northeast and east. The carrying capacity of resource and environment was dominated the level VI and V, where the highest level of carry capacity distributed in the northeast and southeast, whereas, the lowest levels of carry capacity in the south, southwest, and northwest. 2) In the optimized function areas of territorial space, seven types of function areas were divided in karst areas. Specifically, the types of function areas related to ecological function dominated in the development of karst areas, accounting for 79.54%. The types of function areas related to urban function were the smallest, accounting only for 2.35%. The areas dominated by urban function were mainly distributed in the middle and southeast, whereas, the areas dominated by agricultural function were mainly distributed in the north, west, and east, as well as the areas dominated by ecological function were mainly distributed in the north and south. 3) Compared with the urban-agricultural-ecological functions coordination method and the "dual evaluations" method, the comprehensive method could more accurately and rationally construct the spatial patterns of territorial space for karst areas. This proposed method can provide an important decision-making support to delimit different areas in karst areas for territorial space planning and ecological restoration. The reasonable layout for different function types of territorial space can provide a sound reference to improve ecological environment, the management of rocky desertification, and the coordinated development of territorial space in karst areas. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Ecology & Rural Environment is the property of Journal of Ecology & Rural Environment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Ecology & Rural Environment is the property of Journal of Ecology & Rural Environment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to understand the current situation of land use layout in the plateau lake basin and explore the optimal allocation of land use space in the plateau lake basin based on urban-agriculture-ecology coordination, the paper takes the Fuxian Lake Basin as an example, based on the 3S technology, and uses the MCR-CLUE-S model to study the structure and layout of town-agriculture-ecological space in 2030 under the four modes of urban construction scenario, cultivated land development scenario, ecological protection scenario and integrated optimization scenario in the Fuxian Lake Basin. Finally, the optimal allocation of land use space under the coordination of town-agriculture-ecological space in Fuxian Lake Basin is proposed. The results show: 1) From 2005 to 2015, in the Fuxian Lake Basin, the urban space is on the rise, the agricultural space is in a downward trend, and the ecological space is rising first and then decreasing. The spatial distribution pattern is basically the same in 10 years. 2) The paper selects important water source, lakeside wetland and large-scale natural forest land as protection sources, 8 resistance factors such as elevation and slope are selected. The minimum cumulative resistance model and the cumulative cost distance model are used to construct the ecological security pattern of the Fuxian Lake Basin, as well as the “source” core area, ecological protection area, ecological margin area, agricultural development area, agricultural fringe area and urban construction area which are conducive to ecological protection. 3) Taking the ecological functional partition area in the ecological security pattern as a constraint, based on the Markov model's calculation of the number of land types, and simulating the town-agriculture-ecological space optimization layout in the urban construction scenario, agricultural development scenario and ecological protection scenario of the Fuxian Lake Basin in 2030 through the CLUE-S model. The urban construction scenario takes into account the current needs of life, and the development of the number and spatial structure of town-agriculture-ecological space led by the development of urban space under the guidance of policies; the agricultural development scenario controls the size of urban space and develops part of the ecological space potential; the area of agricultural space has decreased under the ecological protection scenario, and the urban space area has increased slightly. 4) In the 2030 comprehensive optimization scenario of the Fuxian Lake Basin, seven spatial types are classified according to different land functions: Urban space, agricultural space, ecological space, urban-agricultural space, urban-ecological space, agriculture-ecological space and town-agriculture-ecological space.There are large differences in various types of space: Agriculture - ecological space is minimal, ecological space is maximum. 5) By analyzing the advantages of regional development in four cases and combining with various factors such as cultivated land protection, ecological protection and socioeconomic development in the Fuxian Lake Basin, the study considers that the integrated scenario is more reasonable and more suitable for local development, while the other three single-element scenarios can complement and adjust the implementation of the integrated scenario. The research results provide reference for the decision-making of land space planning and ecological protection strategy in Fuxian Lake Basin. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)