Study on spatial layout optimization of Linpan settlements based on point pattern analysis
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Study on spatial layout optimization of Linpan settlements based on point pattern analysis Ajun Wan1 · Yixuan Liu1 · Xinjue Xie1 · Runqiu Tu1 · Xiaolei Qi1 Received: 27 November 2019 / Accepted: 9 October 2020 © Springer Nature B.V. 2020
Abstract According to the problems of lack of planning and disordered layout of rural settlements in China, it is urgent to further improve the methods of optimizing the settlement pattern of towns and villages and the intensive use of land. The main purpose of this paper is to optimize the layout of rural settlements with a single land-use type and a large number of rural settlements to be relocated. This paper takes the Linpan settlements of Deyuan Town, Chengdu City, Sichuan Province as the research object and establishes the suitability evaluation system of Linpan settlements by the Entropy method. The Linpan settlements of research area are divided into the central and the non-central Linpan settlements and determine the search threshold according to the point pattern analysis method and multi-distance spatial cluster analysis. Through the study of regional preliminary central Linpan settlement selection and search threshold determination, central Linpan settlement site selection, the determination of non-central Linpan settlement’s migration direction, the results show that the radiation coverage rate of the central Linpan increased by 17.3%, the number of repeated radiation Linpans decreased by 63.2%, the overlapping area decreased by 49.9%, and finally 179 Linpans were optimized and merged into 36 central Linpans. Keywords Land use · Linpan in Western Sichuan · Suitability assessment · Layout optimization
* Ajun Wan [email protected] Yixuan Liu [email protected] Xinjue Xie [email protected] Runqiu Tu [email protected] Xiaolei Qi [email protected] 1
Institute of Modern Agricultural Science and Engineering, Tongji University, Shanghai 200092, China
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1 Introduction With the rapid development of urbanization, how to effectively manage the allocation of rural land resources and improve land use efficiency has attracted widespread attention from scholars at home and abroad (Luo and Xu 2015). China’s rural construction currently has the characteristics of shortage of land resources, loss of rural population, and scattered rural distribution and urgently needs rectification planning. By increasing the active use of construction land, reducing the consumption of land resources, achieving intensive land use and sustainable economic and social development. From the perspective of the layout characteristics of rural settlements, Li (2011) used GIS technology, landscape index method and Tyson polygon method to obtain the spatial aggregation characteristics and layout status of rural settlements. Zhong et al. (2014) used the FRAGSTATS tool to analyze the landscape pattern index of rural settlements in mountain areas, and proposed the spatial evolution and morphological changes of rural settlements. Li et al. (2015a, b) used the
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