Spatio-temporal interaction of project zone for pothook between rural-urban construction land

Abstract: According to calculations from the Ministry of Land and Resources, the area of rural residential land in China is about 270 million acres at present, which is 5 times as much as that of urban construction land. The structure of urban and rural construction land is, therefore, seriously unbalanced. At the same time, there are a series of problems associated with rural residential land in China, such as diversified utilization patterns and inefficient utilization of land resources. How to improve the intensive use of rural residential land and alleviate the contradiction between supply and demand of construction land in urban and rural areas has become an important issue for the sustainable land use. To that end, there have been a variety of policies made for addressing these problems, e.g., connecting an increase in urban construction with a decrease in rural residential land (for short "CUR"), which would be an effective measure to promote the overall efficiency for rural residential land, improve rural production and living conditions, optimize the urban and rural land use structure and alleviate the shortage in land for urban construction. From the view of policy requirements and practice experience, setting up reasonable project zones is the core content of CUR planning. Taking Pinggu District of Beijing as a case, this paper attempts to evaluate the suitability intensity of urban new construction land and old rural residential land demolition using supply-demand theory, differential rent theory, and previous research on rural residential land consolidation potential and CUR zoning. , Then, the results of evaluations were fixed respectively by the general plan for the land use and evaluation blocks' space relative concentration and suitability consistency，and the new urban building area and the old rural demolition area were selected. Through the establishment of the spatio-temporal interaction relationship principle and concept model, the CUR project zones were formed by organic combination. There are several results that follow. First, the method can effectively filter out the new building areas of urban construction and the dismantled areas of rural residential land, and then realize the composite joint and Spatio-temporal allocation so as to provide reference for the conditions setting and choice and spatial linkage and scheduling of CUR project zones. Second, overall, Pinggu district belongs to the supply exceeding demand CUR type, the supply potential of rural residential land consolidation potential can meet the demand of town new construction land. Third, the CUR plots are planned to 22 project zones in Pinggu district, including 8 recent project zones and 14 forward project zones in the sequence, and including 17 project zones in individual town and 5 project zones in different town in the space pattern. Fourth, based on the defining CUR project zones, with the reasonable analysis of building the new uses and effective arrangement and setting of depreciation and resettlement of rural residential areas, the paper realizes the integrative target to ensure the economic-social rapid development and promote more intensive utilization of land and increase quantity of cultivated land.