Recent Oasis Dynamics and Ecological Security in the Tarim River Basin, Central Asia

As an important agricultural and gathering area in arid inland areas of China, the ecological environments oasis are more sensitive to regional climate change human activities. This paper investigates dynamic evolution oases Tarim River basin (TRB) quantitatively evaluates security via a remote sensing index (RSEI) net primary productivity (NPP) through Carnegie–Ames–Stanford approach (CASA) from 2000 2020. The results indicate that total plain TRB during study period experienced increasing trend, with expanding by 8.21%. Specifically, artificial (cultivated industrial land) showed notable increase, whereas natural (forests grassland) exhibited apparent decrease. Among indictors change, Normalised Difference Vegetation Index (NDVI) increased 0.13 0.16, fraction vegetation cover (FVC) expanded 36.79%, NPP 31.55%. RSEI changes indicated eco-environment region went poor grade general grade; 69% region’s improved, especially western mountainous areas, less than 5% regions’ eco-ecological were degraded, mainly occurring desert-oasis ecotone. Changes land- use types activities had significant influence on expansion factors. Our have substantial implications for environment protection sustainable economic development along Silk Road Economic Belt.