水土保持研究2025，Vol.32Issue(3)：196-205,10.DOI:10.13869/j.cnki.rswc.2025.03.006
2001-2022年祁连山南坡植被NDVI时空动态及未来持续性
Spatiotemporal dynamics and future sustainability of vegetation NDVI on the southern slope of the Qilian Mountains from 2001 to 2022
摘要
Abstract
[Objective]The study aims to investigate the dynamics and sustainability of vegetation on the southern slope of the Qilian Mountains and its driving factors,providing scientific evidence for ecological restoration and management in this region.[Methods]The MODIS Normalized Difference Vegetation Index(NDVI)dataset from 2001 to 2022 was used to characterize the vegetation changes.Slope trend analysis,geographic detector,and Hurst index were used to study the spatiotemporal variation and future sustainability of vegetation NDVI on the southern slope of the Qilian Mountains.[Results](1)Over the past 22 years,the vegetation NDVI of the Qilian Mountains showed a fluctuating increasing trend:significantly increased area(1.2×104 km2)>insignificantly increased area(1 132 km2)>significantly decreased area(8 347 km2)>insignificantly decreased area(2 424 km2)(p<0.05).(2)Geographic detection results showed that the interaction of influencing factors exhibited nonlinear and two-factor enhancements.The coupling of land surface temperature with altitude and air temperature was the direct controlling factor influencing NDVI change on the southern slope of the Qilian Mountains.71%of the factor combinations showed significant differences in their impacts on the spatial distribution of NDVI.(3)In the future,vegetation on the southern slope of the Qilian Mountains is expected to show sustained improvement,with areas of improvement accounting for 51.65%of the study area.Vegetation at altitudes above 3 400 m will mainly exhibit sustained improvement.[Conclusion]The vegetation ecosystem on the southern slopes of the Qilian Mountains is generally improving,and this trend is expected to continue.Surface temperature is the dominant factor affecting vegetation growth in this region.关键词
祁连山南坡/NDVI/时空变化/持续性Key words
southern slope of the Qilian Mountains/NDVI/spatiotemporal variation/sustainability分类
生物学引用本文复制引用
李晓燕,曹广超,陈宗颜,袁杰,孙子婷,唐建亭..2001-2022年祁连山南坡植被NDVI时空动态及未来持续性[J].水土保持研究,2025,32(3):196-205,10.基金项目
青海省自然科学基金项目(2023-ZJ-907M) （2023-ZJ-907M）
青海省"高端创新人才千人计划"(青人才字[2019]06号) （青人才字[2019]06号）
