Mode selection for rural residential land consolidation based on analysis of location condition

Abstract: Rural residential renovation is not only an important part of comprehensive rural land improvement, but also the inevitable choice of overall planning for urban-rural development and new rural construction. Location is one important factor that affects rural residential development and layout, which determines the degree of difficulty and priorities in rural residential renovation. It is an important condition when selecting the rural residential renovation mode, and a significant basis for making the decision of which mode to adopt at the same time. This study took the rural residential areas (plaques) as the research object, and established a location evaluation index system that included natural and socio-economic factors such as the distance between the settlements and the county, the distance between the settlements and towns, the distance between the settlements and the gathering area, the distance between the settlements and a highway that is above the county level, the distance between the settlements and rivers, and gravity value and terrain conditions of the settlements. It then used the method of Analytic Hierarchy Process to determine the weight of each index. In this paper, the northern plateau region of Linxia County, Gansu Province was taken as the study area and NERA tools and statistical functions of ArcGIS 9.3 were used to evaluate and grade the region's rural residential location conditions. On the basis of the condition of residential area without breaking the boundaries of villages, the paper accounted for the total condition value of every administrative village through an area-weighted summation of the total value of settlements, then divided the location score values into five grades according to the frequency mutation, and finally put forward five kinds of arrangement modes corresponding to the location level, such as the development-oriented, retaining type, potential-tapped pattern, settlements-merged pattern, and migration model, which was according to the regional level and the current situation and condition constraints of all residential areas under the different condition characteristics. The development-oriented mode corresponded to the location Ⅰ area, whose main optimization direction was to speed up urbanization and farmland circulation, to dismantle scattered settlements, and to encourage farmers to go into town. The retaining type mode corresponded to the location Ⅱ district, whose main optimization direction actively implemented the rural residential renovation and dismantled scattered settlements. The potential-tapped pattern corresponded to the location Ⅲ level area, whose main optimization direction tapped the internal potential of the residential area, dismantled scattered settlements, improved the degree of centralization of residential area, and developed irrigation agriculture on the advantages of water. The settlements-merged pattern corresponded to the location Ⅳlevel area, whose main optimization direction actively implemented the rural residential renovation, dismantled scattered settlements, and improved the concentrated extent of residential areas. The migration model corresponded to the location level Ⅴ area, whose main optimization direction implemented the whole village relocation project for the target of ecological protection, and it should adjust measures to local conditions after finishing the land consolidation. The results of the study emphasized that the renovation mode under the location conditions considered took into account both strengths and weaknesses of different conditions of rural residential areas, and the different arrangement modes resulted in different emphases. This study can provide an effective reference for new local rural construction, the comprehensive improvement of rural land, and the link of increase and decrease of the land for construction use in both urban and rural areas, etc.