The vegetation degradation, drought and other environmental issues in the Mongolian Plateau have
been as the hot spot in the study of the climate change and the ecological environment changes
in Northeast Asia. However, it is lack of study focused on building the stable drought
monitoring model and their spatio-temporal differences between Mongolia and Inner Mongolia.
Based on the NOAA AVHRR NDVI-PathFinder 10d remote sensing data of 1981-1999 and MODIS
vegetation index and the surface temperature 16d data of 2000-2012, the knowledge service
inverted Temperature and Drought Vegetation Index (TVDI) by the Ts-NDVI general space, their
spatio-temporal distribution and changes were studied. The main conclusions are as follows: The
inverted TVDI based on NOAA AVHRR NDVI-PathFinder and MODIS data, could explain the macro
spatio-temporal distribution and changes of drought. The vegetation cover and drought in the
Mongolian Plateau has obvious zonal distribution, and closely related with the Land Use/Land
cover types. Drought is common in the Mongolian Plateau, and it is severe drought in some years.
There were differences between the changes of TVDI in different regions of different Land