The dynamic remote sensing monitoring of Inner Mongolia natural grassland vegetation in 20 years

The study took GIMMS NDVI data of the vegetation growth peak season in the early 1980s and the beginning of this century as a data source, by means of the remote sensing techniques, analyzed dynamic changes of natural grassland vegetation of Inner Mongolia. The results showed that dynamic change of natural grassland vegetation was obvious in Inner Mongolia. In the past 20 years, the condition of the vegetation overall presented a deterioration trend, about 61.88% natural grassland deteriorated, 30.17% unchanged, 7.95% became better. The region of high vegetation coverage and biomass began to decrease while the region of low vegetation coverage and biomass was increasing.