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Reliable identification of realistic biomass at regional level is particularly important in creating a real energy strategy. It must stand for the region in particular in the long-term aspect of its sustainable development. The aim of the paper is to identify and quantify environmental impacts, especially microclimatic impacts, on the possibility of establishing and growing economically and energy-efficient plantations of fast-growing energy plants in Slovakia regions. The NUTS III methodology was used to locate the climatic conditions of the Slovakia regions. Climatic factors in Slovakia regions were expressed as average monthly air temperatures and average monthly precipitation for the vegetation period from April to October. The climatic parameters of the model plantation in the Nitra region were defined on the basis of measurements of the Physicus Meteostation, located in the field conditions of Kolíòany village. Regions in the southern and south-eastern regions of Slovakia (Bratislava, Trnava, Nitra, Košice) are the most climatic friendly for the growing Mustanthus and Populus. The Northern regions (Žilina and Prešov) are less suitable for climatic reasons - the shorter length of vegetation period required for the economically efficient production of above-ground biomass. In the Nitra region, productivity in real climatic conditions is 33.66 t.ha-1 (Miscanthus) and 135.14 t.ha-1 (Populus). [ABSTRACT FROM AUTHOR]

In the context of climate change, the paper presents an analysis of the evolution of grapevine phenophases, in the period 1991-2021, for four grapevine cultivars Selena, Blasius, Rubin and Radames, and two clones Sauvignon blanc 9 Bl, Feteasca alba 29 Bl homologated at SCDVV Blaj. The study is based on the climatic and phenological data from SCDVV Blaj. The climatic data have been processed into fourteen parameters and for the phenological periods the starting date was analyzed. Regarding the average annual temperature, during 2010-2021 there is an increase of 1.1 ºC compared to the multiannual average reference temperature (calculated as the annual average of the years 1975-2010), which means that in the studied area, during the period 2010-2021 there was a warming compared to reference years. The average duration of the vegetation period from 2010-2021 is shorter than the reference period by 3.2 days. In 2011 the annual aridity index denotes a semi-arid dry climate, and in 2012, 2015, 2017 and 2019 a moderately humid climate. The hydrothermal coefficient was higher in the studied period compared to the reference period, registering values between 1.0 (2011) and 2.8 (2016), which has a positive influence on grape production. The Huglin index for the studied period is between 2237.6 in 2021 and 2928.5 in 2012, with an average of 2542.6 which places Tarnave vineyard area in a warm climate zone. Concerning the precipitation, a slight increase of 34.7 mm/m2 compared to the multiannual reference amount was monitored. In these conditions the warming of the climate induced an earlier budburst with an average of 8 days, correlated with an earlier maturation with 9-11 days in average. So far for the blooming and veraison phenophases starting date, no differences of the outrunning were clearly observed. [ABSTRACT FROM AUTHOR]