2.2.1. NDVI data

The annual vegetation phenology data on the TP was determined from the Moderate-resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) dataset. In the study of vegetation phenology on the TP. MOD09A1 dataset product was obtained through the NASA Land Processes Distributed Active Archive Center (NLPDAAC, http://LPDAAC.usgs.gov). MOD09A1 NDVI data were used for this study [42]. The MODIS Reprojection Tool (MRT) was used for mosaic and reprojection analysis to generate 1 km spatial resolution data. Finally, the data were extracted using the boundary of the study area.