Spatial and Temporal Change of MODIS vegetation indices for different grassland in northern Xingjiang
Taking monthly change from May to October in 2004 and 2005 as an example, the NDVI (Normalized Difference Vegetation Index) and EVI (Enhanced Vegetation Index) for five typical grasslands of alpine steppe, alpine meadow, temperate desert steppe, artificial grassland and swamp were analyzed in different growth stages by use of new remote sensing data of MODIS (Moderate Resolution Imaging Spectroradiometer) , which reflected its growth status and characteristics. The results indicated that the EVI values were lower than the NDVI values, and there existed a similar monthly change trend, but the magnitude of EVI was lower than the NDVI. EVI was steadier than NDVI in alpine steppe, alpine meadow and temperature desert steppe, but the stabilization of NDVI was better than EVI in artificial grassland and swamp.
国家科技期刊平台
NSTL
万方数据
维普
