Yunnan Province Vegetation Dynamics Using GIMMS NDVI from 1982～2003
In order to research the vegetation cover variation in Yunnan province, the Normalized Difference Vegetation Index (NDVI) is utilized to demonstrate the spatio-temporal distribution of vegetation cover. After applying the international universal Maximum Value Composites (MVC) technique for further increasing accuracy, every grid value of GIMMS NDVI is calculated and then compared in spatio-temporal scale. The results show: (1) the vegetation cover in Yunnan province is high generally, and the annual mean vegetation cover can be divided three period; (2) All the inter-season variation of vegetation showed obvious fluctuation, and the change characteristics in summer is closed with inter-annual variation; (3)The vegetation cover in southeast of Yunnan is relatively high, and northwest appeared low value; (4) The spatial characteristics of vegetation cover in summer is similar with annual mean distribution most. So the GIMMS NDVI provides a good tool to study the distribution of vegetation cover generally.
Chiyuan Miao Fei Xiao Yafeng Wang
Department of Environmental Engineering Peking University Beijing 100871, China Division of Science and Technology Management Chongqing Jiaotong University Chongqing 400074, China Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085, China
国际会议
三亚
英文
58-62
2009-04-24（万方平台首次上网日期，不代表论文的发表时间）