2000一2023年塔里木河下游归一化植被指数时空变化趋势分析

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中图分类号：S718.521.2 文献标识码：A doi：10.13601/j.issn.1005—5215.2026.01.002

AbstractThe Tarim River Basin is one of the most critical regions in China’s ecological security strategy，holding ireplaceable ecological significance.This study focuses on the spatio-temporal changes in vegetation in the lower reachesof the Tarim River，adopting the Normalized DifferenceVegetation Index（NDVI） to conductan in-depthanalysisof variation trends of vegetationcoverage inthe lower reachesof the TarimRiverfrom 20o to 2023.The results show that the vegetation coverage in this region has experienced significant phased fluctuations.From 2000 to 2010，the vegetationcoverage was generall low with litle change;starting from 2Ol1，withthe increase in ecological water supply and the improvement of climatic conditions，vegetation restoration entered an accelerated phase.In particular，from 2O16 to 2O18，the vegetation coverage increased sharplyand reached a peak in 2018;since 20l9，although the vegetationcoverage has slightlydecreased，theoveralltrend hastended tostabilize.Itis revealed thatthedynamic changes of vegetationare affcted by the interaction of multiple factors，including climate change，ecological water resource allocation，and human activities.

Key wordsthe lower reaches of the Tarim River;Normalized Difference Vegetation Index;spatio-temporal variation;trend analysis;arid region

植被作为陆地生态系统的基础构成单元，是陆地生态系统的主体，在能量流动调控、碳循环维持及生物多样性保育等方面发挥着不可替代的生态功能。（剩余7746字）