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Understanding the dynamics of vegetation activity and its interaction with climate factors becomes an important issue in global change research. In this study, using satellite-derived normalized difference vegetation index (NDVI) data, we analyzed changes in vegetation growth at the region scale from 2000 to 2013 in Sichuan Province, China. And then explored the relationship between NDVI trends and...
Grassland, which has a great significance to human society, is susceptible to the drought. An efficient way to monitor the drought scale of grassland is imperative. In this paper, we proposed a new drought index named Grassland Drought Index (GDI) to monitor the drought conditions of the grassland ecosystem. The GDI was constructed by comprehensively integrating the soil moisture content, canopy water...
In the remote sensing data processing the key in extracting thematic information is to compartmentalize the background and the anomaly. Anciently we use the singleness threshold parameter to extract the anomaly information in the same area. Actually different landscape area have different thematic information background, namely it have background spatial differentiation characteristic. So when we...
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