干旱区生态环境知识资源中心

The main body of the natural grassland in China is generally located in arid and semi-arid areas which have fragile ecological environment, while the desert grassland has a sensitive and unique response for ecosystem changes. So the study for the temporal and spatial changes of the vegetation in desert grassland has important scientific and practical significance. This article adopts 3S technology, with MODIS remote sensing data as the theoretical basis data and ground survey data, and takes typical desert grassland (Damaoqi grassland in Inner Mongolia) for example. Analyzing the changing of vegetation index in desert grassland during their growth period and deducing the distribution and classification of vegetation index during its peak growing period in the study area, discussing the spatial distribution characteristics of the typical desert grassland.