中山大学学报（自然科学版）2026，Vol.65Issue(3)：91-100,10.DOI:10.11714/acta.snus.ZR20250182
1982-2021年天山NDVI时空变化及影响因素
Spatio-temporal variations of NDVI and its driving factors in the Tianshan Mountains(1982-2021)
摘要
Abstract
Vegetation dynamics are driven by multiple factors and are particularly sensitive to climate in arid and semi-arid regions.The Tianshan Mountains,as the largest mountain range in the world's arid regions,have undergone significant vegetation changes,yet the drivers behind these changes and their relative contributions remain insufficiently understood.To address this,we used Theil-Sen median trend analysis and Mann-Kendall test to analyze interannual and seasonal spatiotemporal patterns from 1982 to 2021,and applied a Geodetector model to quantify the effects of natural factors on the normalized difference vegetation index(NDVI).Results revealed an overall increasing trend in NDVI(slope 0.001 6 a-1),indicating a marked greening,with localized degradation in the northern part of the central Tianshan.The spatial distribution of vegetation was primarily shaped by interactions among elevation,precipitation,and temperature,as well as between these factors and other environmental variables(e.g.,VPD).The impact of climatic factors on vegetation change has increased significantly over the period.This study provides a scientific basis for informing ecological security and sustainable development in the Tianshan.关键词
气候变化/植被/归一化植被指数/天山/地理探测器Key words
climate change/vegetation/normalized difference vegetation index(NDVI)/Tianshan Mountains/geodetector分类
社会科学引用本文复制引用
杜琪,杨雪峰..1982-2021年天山NDVI时空变化及影响因素[J].中山大学学报（自然科学版）,2026,65(3):91-100,10.基金项目
国家自然科学基金(42261062 （）
41761075) （）
