| With the development of social economy, the attribute of land asset was shown increasingly, and land value also gradually taken seriously by people. Under the circumstances of urban rapid expansion and arable land strictly protection, the situation of rural construction land use inefficient utilization ought to be changed, so as to play its important role as the stock resources. Collective construction land circulation is the request of production factors'rational flow and optimized configuration below market economic system, also, the important ways to promote the optimization allocation of land resources. The potential of rural collective construction land circulation related to its validity and sustainability.The estimate to rural collective construction land circulation potential is the desirability of coordinating urban and rural land use, and the significant basis for general land use planning management. Therefore, it's beneficial for improving the method system of rural collective construction land circulation potential measurement by carrying out the study of rural collective construction land circulation potential. At the same time, it provided quantifiable indicators for rural collective construction land circulation, the rural land assets value quantitative basis to promote the overall planning for urban-rural development, and the decision-making basis for the macro configuration of construction land target on the government level. In the final, the spatio-temporal data support was provided for "ticket" transactions, also, the basis for rural collective construction land circulation implementation and related institution reform.The rural collective construction land circulation problems and reasons of Chongqing were explored, based on the appraisal for status of rural collective construction land use and circulation, and the factors affecting the circulation were found. Through defining the connotation of rural collective construction land circulation in Chongqing, and analyzing the potential source, the measuring ideas for rural collective construction land circulation was clarified. By taken regression analysis method, the rural population in planning objectives was forecasted. Also, the factors driving for rural collective construction land circulation were determined, based on principal component analysis. The correction index system for influence factors of rural collective construction land reclamation and circulation was established, by using analytical hierarchy process, and the reality potential was measured out. With the help of SPSS ArcGIS etc. rural collective construction land circulation potential was quantitatively depicted and analyzed. Also, the potential types were classified.The following three aspects were comprised in the paper:(1) Basic characteristics of rural collective construction land circulation potential source in Chongqing. The rural collective construction land circulation potential source and the policy basis were mainly studied. and the rural collective construction land use status evaluated.(2) Potential measure of collective construction land circulation in Chongqing. By analyzing the objective and the obstacle factors of rural collective construction land circulation in different types, and defining the connotation of rural collective construction land circulation in Chongqing, the potential of rural collective construction land circulation in Chongqing was estimated. Finally, its space differentiation characteristics were summarized.(3) Ways to release the collective construction land circulation potential:from theory to reality. By putting forward the thought and pattern of rural collective construction land circulation in Chongqing, the feasible ways for the revenue formation of collective construction land circulation and basic rules for income distribution were clarified. In the end, the framework of rural collective construction land circulation realizing was constructed, from the aspects of institution innovation, system innovation and medium construction in rural collective construction land circulation.The following can be concluded, through the above research.(1) The amount of rural collective construction land in Chongqing was large, which had exceeded the national standard, with significant regional differences. In 2008, the land of rural residential that was the main part of construction land was 35.79×104 hectare, which accounted for 60.34% of total land for construction. Therefore, the collective construction land was larger. The rural residential per capita in 2008 was 238.03 square metre per person, which was far more than construction land indicators per capita in "standards of town planning". And the rural residential areas extensively distributed that the potential of settlement arrangement and homestead circulation was huge.(2) Collective construction land circulation affected by many factors, in which the social economic factors were dominant factors. The level of regional economic development and urbanization was the dominant factors and fundamental power for driving rural collective construction land circulation. And the institutional policy was an important decision factor which impacted on rural collective construction land circulation for a long time. Meanwhile, the natural environmental conditions played a basic and binding role in the rural collective construction land circulation. In accelerated industrialization stage, the economic development level and social development level interacted and promoted mutually. Thus, national economy developed with high level, social security would be perfect, also the degree of collective construction land circulation notable.(3) It had great potential for the rural collective construction land reclamation, with significant spatio-temporal differences. According to the calculation, the reality potential of collective construction land reclamation were 60241.00 hectare and 80736.74 hectare, however, there were great difference in time and space. In view of the space, "One hour circle" showed most potential to collective construction land reclamation, and the "Southeast Chongqing" least. The collective construction land reclaimed in "one hour circle" during the period of 2009～2015 and 2009～2020 were 42020.57 and 56297.05 hectare, accounting for 69.75% and 69.73% of Chongqing. And the collective construction land reclaimed in "Southeast Chongqing" during the period of 2009～2015 and 2009～2020 were 2713.03 and 3708.70 hectare, with the mount of 4.50% and 4.59%. Seeing from time series, the theoretical potential of collective construction land reclamation in period of 2009～2015 occupied the 74% of 2009～2020, and so was the reality potential, with the amount of 25% about in 2015～2020. And thus, the reality potential of collective construction land reclamation in 2009-2015(recent) was larger.(4) Impacted by many factors, the rural collective construction land circulation of the city differed greatly in time and space. According to the calculation, the reality potential of rural collective construction land circulation was 29840.85 hectare in 2009～2015, and 39843.81 hectare in 2009～2020. In view of the space distribution, the potential of rural collective construction land circulation in "One hour circle" was the largest, and least in "Southeast Chongqing". The collective construction land circulation in "One hour circle" during 2009～2015 was 20879.14 hectare, and 27772.51 during 2009～2020, which accounted for 69.97% and 69.70% of Chongqing separately. And the collective construction land circulated in "Southeast Chongqing" during 2009～2015 was 1350.58 hectare, and 1846.60 during 2009～2020, with the amount of 4.53% and 4.63%. Seeing from time series, the theoretical potential of collective construction land circulation during 2009～2015 occupied the 74% of 2009～2020, and so was the reality potential, with the amount of 26% about in 2015～2020. And thus, the reality potential of collective construction land circulation in 2009-2015(recent) was larger.(5) The approaches to release the potential of collective construction land circulation. The realization for the collective construction land circulation potential required the establishment of relevant security system, especially the innovation of relevant institution and mechanism. Combing the reality of rural collective construction land circulation in Chongqing, the supporting system ought to be constructed as following five aspects. Firstly, establish reasonably circulating pattern. Secondly, set up reasonably distributing mechanism. Thirdly, institution innovation, involving general investigation system for rural collective construction land, property register system for rural land, reclamation planning system for rural collective construction land, and other management system. Fourthly, actively carry out such relevant mechanism innovation as rural residential withdrawal Mechanism, purchasing subject incentive mechanism, and rural collective construction land circulation price Mechanism. Fifthly, build up the rural collective construction land circulation trading platform, so as to regulate the trading subject, establish the intermediary service system, and improve the working procedure of rural land exchange. |
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