A Study On Rural Residential Land Layout And Optimization In Changsha County

With the rapid development of economy, the improvement of the urbanization level, the demand for urban construction land is increasing, thus the intensive use of land conservation is particularly important. But the phenomenon that the rural residence occupies too much area and has scattered points is often seen. Rural residential land optimization become the key to solve the problem.This paper analysis rural residential status, problems and influencing factors in Changsha County through the research of literature and field investigation. Based on the 2014 Land Change Survey Database and ARCGIS10.0 platform, it realizes the quantitative analysis of rural settlement land layout suitability by the use of function of spatial statistical analysis, overlay analysis, buffer analysis, near analysis. The main achievements are as follows:(1)Residential layout is obviously influenced by altitude, slope, distance from main road, water resource and town. Low altitude, gentle slope, narrow distance from main road, water resource and town will cause the residential distribution more dense, and the scale greater. We divide the residential layout suitability into four grades. Through further quantitative analysis we find that most residential land are in grade two or three, area in grade four account for residential area in 1/10. This shows that the residential land layout needs to be optimized.(2)According to research and analysis of the layout Changsha County residential areas proposed solutions specific to optimize and regrouping. It suggests that the location of residential area is best in the first-rank or second-rank suitability zone, and the minimum scales are various according to the land residential level. Methods for morphology integration include relocation, remediation, develop and urbanization. For the structure optimize it recommends establishing a appropriate residential grading system.