THE DEVELOPMENT OF THE FRINGE AREA OF METROPOLITANS IN NEW CENTURY——A Case Study of The Yangtze River Delta Land Resource Protection

The land use and cover change(LUCC) of metropolitan fringe areas is one of the most important issues of International Geosphere-Biosphere Program(IGBP) and the UN global change study(Lambinetal,1995).In the past 10 years,China has always attached great importance to metropolitan fringe area named suburban urbanization of land use and farmland protection problems,Shanghai,Beijing,Shenzhen,Guangzhou,Nanjing,Hangzhou urban planning departments with scientific research units have done a lot of research,accumulated a lot of valuable experience.This paper takes the Yangtze River delta for an example,and discusses the suburban urbanization of developed economic regions,as well as creates urban agriculture base of suburbs,development strategies of key small towns and construction of high-tech parks and other key issues which involve the basic problems of the rational utilization of land resources.This paper proposes smart growth and various social costs,environmental cost increasing trend caused by urbanization spread from land space-time change.Finally,the authors put forward the reasonable development of rural and urban areas,and the reasonable utilization orientation of suburban land,to perfect the integration of urban and rural areas,and to balance urban and rural development.Considering the situation of China,the authors point out that the agricultural land and important areas in high-yield agriculture land should be protected,the land utilization should be use efficiently.