Nearly 30 Years Of Rural Residential Temporal Evolution Of The Southern Chongqing

Under the lead of LUCC plan and national attention to the problems such as’agriculture, rural areas and farmers problems’,’Urban and rural development as a whole’,’The new rural construction’,’Land remediation’ and so on, the researches of the rural residential areas have become academic hotspots.The main research object of this paper is the rural residential area’s dramatic evolution and the mechanism of the driving force in the period from1980to2010in Southern Chongqing. In order to improve the precision and meet the needs of comparative study, the paper has chosen Nan Chuan District as a typical representative region. Considering the topography, industrial structure, history and many other reasons, Nan Chuan District is divided into three parts:northern, central and southern. Respectively towns were selected from each one of them as samples for spatial analysis.The research contents include four aspects mainly. Firstly, it probes into the spatial data processing method of rural residential area’s space-time evolution in Southern Chongqing, which is divided into raster data extraction, vector data extraction and data transformation in different formats or coordinate systems. Based on raster data, the paper has especially discussed the special terrain landform classification, region extraction, raster calculation, zonal statistics and so on. Secondly, it has analyzed the space-time evolution of rural residential areas in Southern Chongqing by combinating of global and local methods. Thirdly, it has built a driving force system with4primary classifications which contain natural conditions, social-economic conditions, famer behavior, polices and regulations. There are more than10secondary classifications such as basic topography, hydrological conditions and more than12three-level classifications such as elevation, slope, aspect and so on. Combining the landscape index and spatial analysis index, the driving force of rural residential evolution has been analyzed.The paper describes the size, layout and form of rural residential areas by GIS spatial analysis as backbones and landscape index as supplement. Then, through the correlation analysis between the calculation results and some reclassified data of driving force, the’influence-corresponding’matrix could be built. And the other non-spatial data has been analyzed by using principal component analysis method.The results show that:(1) The rural residential areas of Nan Chuan district continuously increased during30years, which has gradually centralized on the central city.(2) The influence of most of natural factors is waning as time gose by except terrain factors.(3) Socio-economic development contributes the change of rural residential areas to some extent, and the effects are growing over time.(4) Farmer behavior is from passive to active during the change of rural residential. (5) The growing of polices and regulations influence accompanied by socio-economic development and farmer behavior civilized.(6) Evolution of rural residential is divided into ’natural conditions driven stage’,’social economic conditions attraction stage’,’urban and rural harmonious development stage’. Different methods should be adopted to guide at different stages.(7) Statistical data analysis results show that there was a positive correlation between the total of the ’rural housing area’ variation mainly with’GDP’,’per capita GDP’,’per capita income of farmers’and employment, policies’ related factors.