Calculation of circulation potentials of the rural collective construction land in Chongqing City

The calculation of circulation potentials of the rural collective construction land can provide the objective basis for its value quantization and financing in balancing urban and rural development, and also basis for the management of the rural collective construction land. The connotation definition of circulation potentials of the rural collective construction land is given in this paper, and then by taking Chongqing as an example, the theoretical reclamation potentials of rural collective construction land which then modified by the impact factor correction index system that is established with the help of AHP method was calculated by the per-capital standard method. On that basis, the introduction of calculation model of the circulation potentials and modification of the theoretical circulation potentials with the help of impact factor correction index system that established by principal component analysis, entropy method finally lead to realistic potentials of rural collective construction land circulation among the year 2009–2015 and 2009–2020 in Chongqing city; and according to its spatial-temporal differentiation the whole area are then divided into several categories. The results showed that the potential of rural collective construction land reclamation was the basis of potential circulation; by the year 2015 and 2020, realistic circulation potential respectively would be 30 392.32 hm2 and 40 591.49 hm2; circulation potentials was vast, but tspatial-temporal differentiation was significant with its different realization degree. And various realistic potentials in different areas should be taken into consideration in the circulation arrangement of time sequence and scale of the rural construction land.