塔里木河流域NDVI时空变化特征及其影响因素分析  

Spatiotemporal Variation Characteristics and Influencing Factors Analysis of NDVI in Tarim River Basin

作　　者：马森 张代青[1] 张惠 陈艺菁 付江凤 MA Sen;ZHANG Daiqing;ZHANG Hui;CHEN Yijing;FU Jiangfeng(School of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学电力工程学院,昆明650500

出　　处：《高原山地气象研究》2023年第4期76-83,共8页Plateau and Mountain Meteorology Research

基　　金：国家自然科学基金项目(51469009);云南省教育厅科学研究基金项目(2020J0056)。

摘　　要：运用Sen趋势分析法分析了1999—2019年塔里木河流域归一化植被指数(Normalized Difference Vegetation Index,NDVI)的时空变化特征,并采用人类活动强度(Human Activity Intensity,HAI)表征模型、相关分析及标准化信息流等方法探究了塔里木河流域HAI及气候变化对当地植被的影响。结果表明:(1)从时间变化看,流域内植被经历了1999—2013年恢复、2014—2015年下降和2016—2019年再恢复共3个阶段,植被增长总体稳定,NDVI增速趋势为0.03%/a。从空间分布看,流域NDVI北部大于南部,西部大于东部,耕地及草地区域NDVI年增长趋势介于0.02%~0.12%。(2)主要农产区NDVI受HAI的积极影响作用较大,耕地面积、草地面积是助推因素。(3)气温上升和降水增加是影响塔里木河流域北部和西部山区植被生长的主要因素,风速、降雪量等因子影响作用较弱。Using Sen trend analysis to analyze the variation characteristics of Normalized Difference Vegetation Index(NDVI) in the Tarim River Basin from 1999 to 2019.The Human Activity Intensity(HAI) characterization model,correlation analysis and standardized information flow were used to explore the impact of HAI and climate change on local vegetation in the Tarim River Basin.The results showed that:(1) From the perspective of time change,the vegetation in the Basin had experienced three stages:recovery from 1999 to 2013,decline from 2014 to 2015,and re-recovery from 2016 to 2019.The vegetation growth was generally stable,and the NDVI growth trend was 0.03%/a.From the perspective of spatial distribution,the NDVI in the northern part of the Basin was larger than that in the south,and that in the west was larger than that in the east.The annual growth trend of NDVI in cultivated land and grassland area was between 0.02 % and 0.12 %.(2) NDVI in major agricultural areas was greatly affected by HAI,and cultivated land area and grassland area were the main driving factors.(3) The increase of temperature and precipitation were the main influencing factors affecting the vegetation growth in the northern and western mountainous areas of the Tarim River Basin,and the influence of wind speed and snowfall was weaker.

关 键 词：NDVI 气象要素 人类活动强度 趋势分析 因果分析 塔里木河流域 

分 类 号：P407[天文地球—大气科学及气象学] Q948[生物学—植物学]