The Analysis And Forecast Of The Vegetation Spatial Pattern Based On RS And GIS In Beijing Mountain Area

Global change and terrene ecosystem (GCTE) is the important content of global change, of which the most complex and energetic part is vegetation coverage and translating of environment. The vegetation plays very important role in circle of biochemistry as while as water. The vegetation change has significant impact on ecological environment, so research on the dynamic changes of vegetation is vital for improving environment in a scientific and reasonable manner.On the basis of a great deal of domestic and international documents , with regards to the characteristics of the study area, we selected landscape spatial pattern ,vegetation coverage and Markov model as the research contents. By using remote sensing images of 1996 and 2000, combined with spectral data and landform map, the vegetation spatial structure of Beijing mountain area was systematically studied . Main conclusions are as follows:(1)In view of the indices of landscape diversity, landscape splitting, landscape fragment; fractal dimension, it was showed that the broken degree of vegetation was declined and the diversity index was increased in beijing mountain area, the overall landscape was more stable.(2) Through analysing the vegetation coverage in Beijing mountain area, it was found that: the broken degree of vegetation was declined and the diversity index was increased in beijing mountain area, the overall landscape was more stable.(3) Using markov model to forecast the compose of vegetation in Beijing mountain area, it was found that: in a period of time, the area of non-forest land will decline, and the area of forest land will increase.