文献类型：会议论文

英文题名：NPP VARIATION AND ITS RESPOND TO PRECIPITATION CHANGE IN POTENTIAL EXTENT OF DESERTIFICATION IN CHINA DURING 2001-2010

作者：Gao, Zhihai[1] Sun, Bin[1] Wang, Hongyan[1] Bai, Lina[1] Wang, Bengyu[1]

第一作者：高志海

通信作者：Gao, ZH[1]

机构：[1]Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China

会议论文集：IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

会议日期：JUL 21-26, 2013

会议地点：Melbourne, AUSTRALIA

语种：英文

外文关键词：Geoscience and remote sensing; Environmental monitoring; Desertification; Net primary production; Precipitation

年份：2013

摘要：The Net Primary Production (NPP) variation and its respond to precipitation change were analyzed in the general potential extent of desertification in China (PEDC) based on time series MODIS NDVI data and high-resolution meteorological data from 2001 to 2010. The results indicated that only 2.8% of general PEDC was significantly decreased and 6.8% of total area was significantly increased. So there are no clear evidences to verify that the annual NPP in general PEDC has greatly decreased or increased during last decade. 23.2% in NPP decreased areas and 23.1% in NPP increased areas are significantly correlated with precipitation. These indicated the vegetation degradation within general PEDC was possibly caused mainly by human activities, and the projects implemented for combating desertification in some areas have played an important role in vegetation rehabilitation.