Abstract: Taking monthly change from April to October in 2005 and 2006 as the example,the NDVI(Normalized Difference Vegetation Index) for five typical grasslands of alpine steppe,temperate meadow,temperate steppe-desert,temperate desert-steppe and low-land meadow were analyzed in growth stages by using of remote sensing data of MODIS,which reflected its growth status and characteristics.The results showed that the NDVI values of the five typical grasslands from max to min were: low-land meadow,alpine steppe,temperate meadow,temperate steppe-desert,temperate desert-steppe.The date of the maximum NDVI for low-land meadow,alpine steppe,temperate meadow,temperate desert-steppe and low-land meadow were all existed in July,the date of the maximum NDVI for temperate steppe-desert was unsteadiness.

Key words: Barkol, Grassland, MODIS, NDVI