Spatial analysis of vegetation cover response to climate trends in Khakassia(South Siberia)  

作　　者：IM Sergei 

机构地区：[1]Institute of Natural Sciences and Mathematics,Khakassian State University named after N.F.Katanov,Abakan 655000,Russia [2]V.N.Sukachev Institute of Forest,Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science,Krasnoyarsk 660036,Russia [3]Institute of Ecology and Geography,Siberian Federal University,Krasnoyarsk 660041,Russia [4]Institute of Space Research and High Technologies,Reshetnev Siberian State University of Science and Technology,Krasnoyarsk660014,Russia

出　　处：《Journal of Mountain Science》2023年第10期2869-2884,共16页山地科学学报（英文）

基　　金：supported by a grant from the Russian Science Foundation(No.22-17-20012)(https://rscf.ru/project/22-17-20012)with equal financial support from the Government of the Republic of Khakassia。

摘　　要：An analysis of the changes in vegetation cover on the territory of the Republic of Khakassia in 2000–2021 due to climatic trends was carried out based on the MODIS data.The changes in vegetation cover were estimated based on trends in Normalized Difference Vegetation Index(NDVI)and Enhanced Vegetation Index(EVI).In general,in the 21st century,an increase in the biomass of vegetation cover is observed.Positive trends were observed in 16%–22%of the territory,and negative only in 1%–3%.For about 20%of the analyzed territory,a significant influence of climate on the changes in vegetation cover was revealed.The most pronounced negative impact on vegetation cover was caused by summer air and soil temperatures,spring temperature,and summer winds,and the positive impact was caused by summer precipitation and soil moisture.The response of the vegetation cover to climate was non-uniform concerning the topography.Thus,a significant correlation with the amount of precipitation was observed for~20%–35%of vegetation growing below 600 m above sea level and for less than 5%above this elevation.The negative effect of summer temperatures on plants prevailed mainly at an elevation below~1400 m above sea level.Projected climate change is likely to lead to significant degradation of vegetation in the steppe and foreststeppe in Khakassia in the coming decades.

关 键 词：Khakassia South Siberia Vegetation cover Climate trends Remote sensing MODIS NDVI EVI RELIEF 

分 类 号：Q948[生物学—植物学] P467[天文地球—大气科学及气象学]