内蒙古植被长势变化及其对气候变化的响应  

Changes of vegetation growth and its response to climate change in Inner Mongolia

作　　者：罗琳玲 易桂花 张廷斌[1,3,4] 李景吉[3,5] 王海军[4] 别小娟 王娜[1] 杜清江 LUO Linling;YI Guihua;ZHANG Tingbin;LI Jingji;WANG Haijun;BIE Xiaojuan;WANG Na;DU Qingjiang(College of Earth Science,Chengdu University of Technology,Chengdu 610059,China;College of Tourism and Urban-Rural Planning,Chengdu University of Technology,Chengdu 610059,China;State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil&Water Pollution(Chengdu University of Technology),Chengdu 610059,China;The Engineering&Technical College of Chengdu University of Technology,Leshan,Sichuan 614000,China;College of Ecological Environment,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学地球科学学院,成都610059 [2]成都理工大学旅游与城乡规划学院,成都610059 [3]国家环境保护水土污染协同控制与联合修复重点实验室(成都理工大学),成都610059 [4]成都理工大学工程技术学院,四川乐山614000 [5]成都理工大学生态环境学院,成都610059

出　　处：《测绘科学》2021年第5期126-134,共9页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41801099);第二次青藏高原综合科学考察研究项目(2019QZKK0307)。

摘　　要：针对内蒙古不同生态区植被长势时空变化及其对气候变化的响应差异问题,本文基于MODIS遥感数据构建植被长势指数(GI)模型,结合研究区气温降水数据,利用相关分析法研究了该区植被长势对不同气候因子响应的时空差异特征。结果表明:内蒙古近17a生长季植被GI整体呈上升趋势,森林生态区和草原生态区植被长势平稳,荒漠草原生态区植被长势较好;生长季植被GI均值在空间上呈南高北低的分布特征,植被长势整体由好到差表现为荒漠草原生态区>森林生态区>草原生态区;植被长势与气温呈负相关关系、与降水呈正相关关系;森林生态区植被长势受气温和降水共同影响,草原生态区和荒漠草原生态区植被长势主要受降水影响;大部分地区表现为受非气候因子驱动。Aiming at the spatio-temporal variations of vegetation growth and its response to climate change in different eco-regions of Inner Mongolia,This paper based on MODIS remote sensing data,a vegetation growth index(GI)model was constructed.Combined with the data of air temperature and precipitation in the study area,the correlation analysis method is used to show the characteristics of spatio-temporal variations in response to different climatic factors for vegetation growth.The results show that:The vegetation GI in Inner Mongolia showed an uptrend in recent 17 years.The main vegetation growth types of forest eco-region,grassland eco-region and desert grassland eco-region area were in the state of balanced,balanced and good,respectively.The spatial distribution of the mean GI showed the characteristics of south-high and north-low during the growing season.The eco-region orders of vegetation growth were desert grassland eco-region,forest ecoregion and grassland eco-region.Vegetation growth was negatively correlated with air temperature and positively correlated with precipitation.The vegetation growth of forest eco-region was affected by both air temperature and precipitation,while the grassland and desert grassland eco-regions were mainly influenced by precipitation.On the whole,the vegetation growth was affected by non-climatic driving factors in most study areas.

关 键 词：植被长势 气候变化 驱动因子 MODIS 内蒙古 

分 类 号：P237[天文地球—摄影测量与遥感]