羌塘国家自然保护区近十年归一化植被指数的研究  

Research on NDVI temporal and spatial variation of Qiangtang National Nature Reserve

作　　者：吴晓萍[1,2] 杨武年[1,2] 李国明[3] 

机构地区：[1]成都理工大学地学空间信息技术国土资源部重点实验室/遥感与GIS研究所,成都610059 [2]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [3]四川省第三测绘工程院,成都610500

出　　处：《测绘科学》2014年第2期55-58,78,共5页Science of Surveying and Mapping

基　　金：国家自然科学基金(41071265;40761018);2010年度高等学校博士学科点专项科研基金(20105122110006)

摘　　要：本文利用时序的NDVI数据及气象资料(气温、降水),对羌塘国家自然保护区东、中、西部各县近10年NDVI、气温、降水变化及其相关性进行分析。研究表明,近10年来,保护区东部NDVI呈显著上升趋势,植被覆盖增加,中部和西部呈下降趋势,植被覆盖减少,东部年均NDVI与气温呈显著正相关、与降水呈显著负相关,中部反之;西部年均NDVI与气温、降水均呈显著负相关。According to the time-series NDVI data and meteorological data（temperature, precipitation）, this article analyzed the change of NDVI, temperature and precipitation and their correlation in the past 10 years of eastern, central and western counties of Qiangtang National Nature Reserve. Studies showed that NDVI had a trend of stable increase in eastern reserve, the vegetation cover was increasing over the past decade, on the contrary, NDVI had a downward tendency in central and western reserves, the vegetation cover was decreasing; eastern annual NDVI and temperature had significant positive correla tion, however, NDVI and precipitation had significant negative correlation, central reserve was opposite; while western annual NDVI and temperature, precipitation had significant negative correlation.

关 键 词：羌塘国家自然保护区 气候因子 植被覆盖度 NDVI 相关性 

分 类 号：X14[环境科学与工程—环境科学] TP79[自动化与计算机技术—检测技术与自动化装置]