Study on the Vegetation Dynamic Change and R/S Analysis in the Past Ten Years in Xinjiang
近10a新疆地区植被动态与R/S分析

Vegetation change is a hot spot of global change research.Using the SPOT VGT NDVI time series data sets,comprehensive utilization of RS and GIS technology,based on trend analysis,HURST index analysis and other methods,the temporal and spatial vegetation cover changes from 1999 to 2007 in Xinjiang were analyzed and the spatial distribution of HURST index and HURST index differences in land\|use types were explored in this paper.The results show that:an increasing trend of vegetation which is not significant in the past decade is detected in Xinjiang.And changes in vegetation cover in most parts of Xinjiang would maintain the current trend.And the time series in local area is anti\|sustainability.While the mean of HURST indices of NDVI time series in various land\|use types is above 0.65,and the HURST indices in desert,Gobi,and bare land are significantly higher than other land cover types,the HURST indices of NDVI time series in the land\|use types affected by human activities are generally low,which sustainability were lower than that of natural or semi\|natural vegetation cover types.