1982—2020年雅鲁藏布江流域植被覆盖变化与驱动因素分析  

Analysis of Vegetation Cover Change and Driving Factors in Brahmaputra River Basin from 1982 to 2020

作　　者：张永成 冯雨晴 陈康 张晓晨[1,2,3] ZHANG Yongcheng;FENG Yuqing;CHEN Kang;ZHANG Xiaochen(Hebei GEO University,Shijiazhuang 050031,China;Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure,Shijiazhuang 050031,China;Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources,Shijiazhuang 050031,China)

机构地区：[1]河北地质大学,河北石家庄050031 [2]河北省水资源可持续利用与产业结构优化协同创新中心,河北石家庄050031 [3]河北省水资源可持续利用与开发重点实验室,河北石家庄050031

出　　处：《河北地质大学学报》2025年第1期78-86,共9页Journal of Hebei Geo University

基　　金：河北省水资源可持续利用与产业结构优化协同创新中心研究生科技创新计划项目(xtzx02);河北省水资源可持续利用与产业结构化协同创新中心开放基金(XTCX202401)。

摘　　要：研究基于GIMMS NDVI数据集,结合气象、土壤等数据,运用有序聚类突变分析、一元线性回归分析和地理探测器等方法,分析了近39年来雅鲁藏布江流域植被覆盖时空变化特征及相关驱动因子。结果表明:1982—2020年雅鲁藏布江流域植被覆盖在波动中呈上升趋势,植被覆盖变化以基本稳定为主,改善区域面积高于退化区域面积,植被覆盖状况改善效果明显。流域内NDVI与降水、气温大部分呈正相关关系,且NDVI与降水的相关系数较大,表明NDVI的变化与降雨关系更密切。驱动力分析表明海拔是雅鲁藏布江流域植被覆盖的主导因子;土壤水分与海拔、降雨与海拔、土壤水分与土壤温度的交互作用是植被覆盖的主导交互作用。Based on GIMMS NDVI dataset,combined with meteorological and soil data,this study analyzed the spatio-temporal characteristics and related driving factors of vegetation cover in Brahmaputra River basin in recent 39 years by using the methods of ordered cluster mutation analysis,linear regression analysis and geographic detector.The results showed that the vegetation cover of Brahmaputra River basin showed an upward trend during the period from 1982 to 2020.The vegetation cover change was basically stable,and the area of improved area was higher than that of degraded area.NDVI is positively correlated with precipitation and temperature,and the correlation coefficient between NDVI and precipitation is large,indicating that the change of NDVI is more closely related to rainfall.Driving force analysis shows that elevation is the dominant factor of vegetation cover in Brahmaputra River basin.The interactions between soil moisture and altitude,rainfall and altitude,and soil moisture and soil temperature are the dominant interactions of vegetation cover.

关 键 词：雅鲁藏布江流域 归一化植被指数(NDVI) 植被覆盖变化 驱动因子 地理探测器 

分 类 号：X87[环境科学与工程—环境工程]