自然资源遥感2025，Vol.37Issue(5)：254-266,13.DOI:10.6046/zrzyyg.2024381
2000-2020年中国植被时空变化格局及其对气候作用的滞后响应分析
Spatiotemporal variations of 2000-2020 vegetation in China and their time-lag responses to climate
摘要
Abstract
Amid global changes,China's vegetation ecosystem has undergone profound transformations.However,there is an urgent need to thoroughly explore the mechanisms underlying the ecological evolution of vegetation in different ecological subregions and historical periods,as well as their differences.Therefore,based on normalized difference vegetation index(NDVI)data,this study investigated the spatiotemporal evolution of vegetation across six major ecological subregions in China and its driving mechanisms using methods such as the gravity center model,lag analysis,geographical detectors,and partial correlation analysis.The results indicate that from 2000 to 2020,mainland China witnessed a decreasing trend in vegetation coverage from east to west.Vegetation coverage increased in all six ecological subregions,with the highest increase(slope of change)observed in the south-central part of China(0.003 9)and the lowest in eastern China(0.002).From 2000 to 2010,regions with increased vegetation coverage accounted for 92%,and this proportion dropped to 71%from 2010 to 2020.Heterogeneous lag times were observed across different vegetation types in varying regions.Specifically,cultivated vegetation and shrubland generally exhibited a 1 to 3-month lag in response to precipitation;cultivated vegetation and coniferous forests presented a lag limited to the current month in relation to temperature,and broadleaf forests generally displayed a 1 to 2-month lag in response to temperature.Precipitation is identified as the dominant factor driving vegetation changes in North China and the northeastern,northwestern,and southwestern parts of China.In eastern China,land use and gross domestic product(GDP)represent the primary driving force behind vegetation change.In the south-central part of China,both precipitation and land use serve as dominant factors.The results of this study can provide significant data support for vegetation restoration and protection in different ecological regions.关键词
NDVI/植被覆盖度/时滞效应/重心/地理探测器/中国Key words
normalized difference vegetation index(NDVI)/vegetation coverage/time-lag effect/gravity center/geographical detector/China分类
计算机与自动化引用本文复制引用
许颖,张润泽,郭兵..2000-2020年中国植被时空变化格局及其对气候作用的滞后响应分析[J].自然资源遥感,2025,37(5):254-266,13.基金项目
河南省科技攻关项目"融合航空影像和激光雷达点云豫西黄河流域切沟监测及体积预测模型研究"(编号:242102321113)、河南省高等学校重点科研项目"融合机载Lidar点云和航空影像的豫西黄河流域切沟监测及体积估算模型优化"(编号:24B420001)及国家自然科学基金项目"水-土-植耦合新视角下黄河三角洲盐渍化演变机理的跨尺度不变性与差异性研究"(编号:42471329)共同资助. （编号:242102321113）
