Dynamic evolution of land use change in the outskirts by GIS and RS technology, taking Dantu district of Zhenjiang city as example

Land use and land cover change (LUCC) plays an important role in the evolution of the global environment and sustainable development. Land use is related to natural geography and human actions, and the factors during some period are mainly studied in LUCC. Most researches are concerned about rural area but few about urban fringe area. In this paper, land use change in the outskirtsis studied, taking Dantu of Zhenjiang city as example. SPOT images (2000 and 2005) are utilized to find information of land use change, and vector maps are overlapped to analyze spatial change by GIS. The paper studies structure, rate and degree of land change in Dantu area among 2000~2005. It is discovered that the rapid extension of urban and industry reduce the area of plantation, which also lead to the degeneration of environment system. Only with the control of land use planning, and increasing land development and reclamation, the rate of reduction of arable land will gradually slow down.