Vegetation Coverage Change of Tsagan Us Oasis in Dulan County,Qinghai Province,China
青海省都兰县察汗乌苏绿洲植被覆盖度变化研究

In order to study variation of vegetation coverage of Tsagan Us oasis in Dulan county in Qinghai Province of China,the grade map of vegetation coverage in Tsagan Us oasis during different period in 1990-2006 was extracted basing on normalized NDVI data,then the interannual variation of the vegetation coverage was quantitatively analyzed.The result showed that the vegetation coverage of Tsagan Us oasis presented a fluctuating increase trend during the 16 years,and the change range of the vegetation coverage ...