Quality evaluation of rural collective construction land based on GIS and comprehensive index method

Abstract: Land quality is the core of rural collective construction land reform in China and is the basis for the evaluation of the benchmark price of rural collective construction land. In the year of 2015, Yujiang County in Jiangxi Province was selected by the Chinese government as the pilot county to launch the rural residential land reform. This reform made the Yujiang County become a perfect place to carry out the research on the rural collective construction land quality evaluation and gradation. In this paper, we firstly analyzed the connotation of rural collective construction land and its similarities and differences with the state-owned construction land. Jinjiang Town, Huangxi Town, Honghu Town and Maquan Town in Yujiang County were selected as the research areas based on the representation of the spatial distribution and identical development type. Secondly, the technical approaches and the evaluation indicator system for rural collective construction land quality evaluation were constructed referred to some relevant technical processes and methods. These reference materials mainly include the state-owned urban construction land gradation, the agricultural land gradation and classification. The technical approaches and the evaluation indicator system for rural collective construction land quality evaluation had fully reflected the characteristics of collective construction land and met the requirements of the ecological civilization construction to the land quality. Lastly, the comprehensive index method was applied to calculate the collective construction land quality scores in 4 research towns. The collective construction land quality scores were graded according to the method combining the total score frequency histogram method and the field verification. The results showed: 1) The rural collective construction land quality evaluation system was different from the technical process of state-owned construction land gradation. This research chose some factors which could influence the rural collective construction land gradation, such as the net income per capital, the distance to built-up area, the rural electronic commerce availability, the construction condition of public service facilities, the farmland area per capital, the rural residential area per capital, the implementation of spatial plans, the green land proportion, the garbage disposal condition.2)The rural collective construction land quality in Jinjiang Town was divided into 4 levels, that in Huangxi Town was divided into 3 levels, that in Honghu Town was divided into 3 levels, and that in Maquan Town was divided into 2 levels.3) The second level of rural collective construction land possessed the largest proportion of each town's area.4) The rural collective construction land with higher land quality grade in 4 towns was mainly distributed in the areas with higher population density and rural collective construction land distribution density, closer to state-owned urban construction land and main traffic roads.From this research, we strongly recommend formulating the technical standards for gradation and price evaluation of collective construction land in time, and land management department should take actions to promote quality evaluation and benchmark land price assessment of collective construction land.