| Suburban rural is at the forefront of the development of rural-urban integration and the implementation of rural revitalization strategies,it is of great significance to carry out research on the optimization of rural spatial pattern in suburban rural to promote the high-quality development of the regional system of human-land relationship.On the basis of constructing the logical framework of the study of the relationship between the suburban rural spatial pattern evolution and the "population-land-industry" system,this paper selects Xiangtan County,a typical suburban county located in the Changsha-Zhuzhou-Xiangtan urban agglomeration,as the empirical study.The evolutionary characteristics of the rural spatial pattern of Xiangtan County from 2009-2018 were systematically analyzed from the two dimensions of rural settlement patches and rural land nonagriculturalization.Secondly,this paper analyzes the main influencing factors and differences in spatial effects of rural spatial pattern evolution using geographic weighted regression model,and discusses the driving mechanism of evolution.Finally,based on the research results,the rural space optimization strategy and policy recommendations of Xiangtan County are put forward.The main conclusions are as follows:(1)From the perspective of the evolution of rural settlement patches,the measurement of clustering characteristics through kernel density showed that during the sample period,the middle and high-value areas and high-value areas of rural settlements in Xiangtan County changed from "multi-point" to "block-like" The tendency of "group-like" evolution.In terms of the changes in the level of rural settlement patches,the lower order small and medium settlements are the main ones,and the large settlements are not significant in terms of number and development degree.In the evolution direction,the rural settlements generally showed a trend of evolution from northeast to southwest,and the dispersion degree of the rural settlement distribution was controlled during the sample period,and the spatial distribution direction became stronger.(2)Judging from the evolution of the spatial pattern of rural land non-agriculturalization,during the sample period,rural land nonagriculturalization in Xiangtan County has a positive spatial correlation,but the overall positive spatial correlation has weakened.From the perspective of cold and hot spots,the hot spots have always gathered to the northwest,and the unbalanced "chuan" type distribution pattern has been continuously strengthened.The imbalance of rural land nonagriculturalization has become prominent and its spread has been increasing.(3)The factors influencing the evolution of the rural spatial pattern of Xiangtan County,in order from high to low,are the distance from the nearest organized town,the per capita disposable income of rural residents,the slope,the rate of per capita rural construction land area exceeding the standard,the number of village congress meetings,whether there are legal village plans,proportion of scaled cultivated land area,number of village enterprises and population density.The degree of difference in the effect of each influencing factor on space is significant.(4)The analysis of the driving mechanism shows that relying on the location advantages in the suburbs and the more open "people-landindustry" system characteristics,the direct endowment ability radiated by urbanization development and the strong self-development consciousness and ability in the countryside are the main driving factors for the evolution of the rural spatial pattern in Xiangtan County.The development of modern agriculture and township enterprises constitutes the core driving factors for the evolution of the rural spatial pattern of Xiangtan County in the new period,and the green development of agriculture and industry has gradually become a new driving factor affecting the evolution of rural spatial patterns.In addition,during the development process,Xiangtan County faced the opportunity of large land remediation space in exchange for development space,which activated the development of various factors with land as the core,and became an important auxiliary driving factor for the evolution of the rural spatial pattern of Xiangtan County.(5)According to the research conclusions,Xiangtan County is divided into five districts,and specific optimization strategies are proposed from the three dimensions of "population","land" and "industry".Finally,policy suggestions for rural space optimization in Xiangtan County are presented at a macro level.First of all,in terms of the "population" system,it is necessary to guide the moderate population concentration,gradually build a "county town-town area-central village" gradient population concentration system,and at the same time enhance the planning and guidance role of constraints.Secondly,in terms of the "land" system,in view of the main contradiction of imbalance between supply and demand of rural construction land,we should innovate the land improvement mechanism based on the past experience of related land improvement,and resolve the conflict between supply and demand of land.At the same time,it is necessary to improve infrastructure,strengthen the agglomeration effect of the symbiotic interface between urban and rural areas,and towns and villages,and create conditions for the establishment of a regional coexistence and symbiosis pattern of "county town-town area-central village".Finally,in terms of the "industry" system,it is necessary to rely on the good development foundation and situation of modern agriculture and leisure agriculture,to create a "rural cluster" space organization model,and form an agglomeration conducive to industrial development.At the same time,relying on the development of modern agricultural industrial parks,a "full value chain" industrial development model based on agricultural production is established. |
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