Spatial Conversion Analysis of Arable Land in Dongguan City Based on RS and GIS

Land use change is the most significant aspect in the research field of globe changing. Affected by both of natural and artificial factors, the land use and land resources quality varied continually. Dongguan City where the zone has a typical feature of land use change and significant ecological effects is selected as a case. This paper analyzed the spatial conversion of arable land in Dongguan city based on RS and GIS technology. The results showed that the arable land area reduced rapidly and experienced rapid change under the pressure of urban expansion. It was the main period about the arable land to reduce from 1988 to 1995. More than 70 percent of arable land was converted to construction sites. Other types of lands also were converted to the arable land, which waters and the forest land were the major types.