Dynamics of NDVI trends for vegetation in Western Siberia under the conditions of climate change (according to satellite data)

A study was made of the response of NDVI trends for various types of vegetation in Western Siberia to climate change (biotemperature and precipitation). MODIS satellite data, Land Cover Type for 2001 and climate change data for the periods (2000-2010) and (2010-2020) were used. It was found that NDVI trends for all types of vegetation were positive for the studied periods. However, with regard to the vegetation of the tundra and southern shrub tundra, the NDVI trends for the period (2010-2020) significantly exceed the NDVI trends for the previous decade (2000-2010). The average annual biotemperature for the period (2011-2018) compared with the period (2001-2008) increased throughout the study area, with the exception of the areas with deciduous-coniferous forests. As a result of the analysis of humidity dynamics for the period (2011-2018) compared with the period (2001-2008), a slight increase in average annual precipitation was revealed almost throughout the entire territory of Western Siberia. The exceptions were tundra and cropland/natural vegetation mosaics, where a decrease in moisture was found.