The Process and Forecasting of Spacial-temperal Change in the Urban Fringe——Taking Fengtai District as Example

Urban fringe is an important landscape which embodies acute changes of urban land structure in the stage of high speed urbanization.With the aid of RS and GIS,the urban fringe of Beijing city is confirmed,and part of Fengtai district is included.The spatial-temperal change character of Fengtai district land use has been analyzed with statistic analysis methods since 1992.It is concluded that the farming land use has been important supply source of other land use,and the supply source building land use is all kinds,and the land use distributing takes on obvious circle structure,and the extent of land use has been strengthened with the time going on.At last,the land use structure and spatial trend have been forecasted with Markvo model in the coming decade.It is found that the extent of the farming land use will slow down until reaching relative stabilization state,the area to the east of Yongding River will be the focus of land use change in the near future.