Analysis of Vegetation Vulnerability Dynamics and Driving Forces to Multiple Drought Stresses in a Changing Environment

Quantifying changes in the vulnerability of vegetation to various drought stresses different seasons is important for rational and effective ecological conservation restoration. However, its dynamics a changing environment are still unknown, quantitative attribution analysis has been rarely studied. To this end, study explored characteristics under Xinjiang conducted using random forest method. In addition, effects water transport increased irrigation areas on were examined. The standardized precipitation index (SPI), precipitation-evapotranspiration (SPEI), soil moisture (SSMI) represent atmospheric supply stress, heat respectively. results showed that: (1) types responded differently with grasslands being more sensitive than forests croplands summer; (2) dominated after 2003, growth near-surface temperature main drivers, while root zone was driver decreased vulnerability; (3) cropland SPI/SPEI/SSMI-related stress due rapid expansion areas, which led increasing demand autumn that difficult meet; (4) Tarim River Basin, downstream reduced.