Research On Rural Spatial Reconstruction Planning In North China Plain From The Perspective Of Man-land Relationship

The 19th CPC National Congress put forward the strategy of rural revitalization,adhere to the priority of agricultural and rural development,and accelerate the modernization of agricultural and rural areas.With the implementation of the national macro-policy,the process of agricultural industrialization in China is accelerating.The Form of agricultural production organization is facing a transformation,which is accompanied by the accelerated reconstruction of rural production and living spaces.It is urgently necessary to work together in various fields to propose a plan which is choosing an appropriate agricultural production organization method that takes into account fairness and efficiency,and guiding the orderly reconstruction of rural space,and start implementation.Urban and Rural Planning which is a discipline that studies the relationship between space and function,is of great significance to the exploration of rural space reconstruction.The main body of activity in the rural space is"man",the object of activity is"land","man"and"land"are the two main subjects that form the rural space,and the rural space is the materialized result of the interaction between"man"and"land".Therefore,it is more directly targeted to study the reconstruction of rural space from the perspective of Man-land relationship,and proposes a planning strategy for the reconstruction of rural space at an essential level.The purpose of this thesis is to explore the suitable agricultural production organization and moderate production scale in the North China Plain area,to build Man-land relationship system in rural areas in the new period,and to take the Pingyuan county of Dezhou City,Shandong Province as a case,to carry out rural spatial reconstruction planning and layout.The main contents are as follows:First,the development trend of agricultural production organization methods in the North China Plain area of my country is studied and judged through the comparative analysis and summary of domestic and foreign agricultural industrialization operation modes and agricultural production organization methods.Empirical analysis of the organization and operation of agricultural industrialization in the main grain production areas of the North China Plain,exploring agricultural production and management methods based on family farms+farmer cooperatives,and the trend of the extension and value-added of the secondary and tertiary industry value chains based on agricultural enterprises.Second,read the literature on the moderate scale of grain-growing family farms and livestock farming family farms,and make a comprehensive comparison.It is proposed that the maximum input of family labor and the optimal comprehensive technical efficiency be the lower limit and the upper limit of moderate scale respectively.The grain-growing family farms are 70-126 mu.Livestock farming family farms are in the moderate range of 500-999 live pigs.The minimum and maximum values of the appropriate scale of the planting family farms are tested with the per capita disposable income of rural residents and the limit labor productivity to verify their rationality.Third,constructing the rural man-land relationship system in the North China Plain in the new period from the three dimensions of man-land scale relationship,functional relationship and spatial relationship.Based on the relationship between man and land,under the guidance of ecological circular agriculture,the cultivation scale of cultivated family farms is 70-126mu/household,the breeding scale of cultivated family farms is 500-999 heads/household,and the proportion of the number of planting and raising family farms is 2.2:1.The index of the area of residential land for villagers is 55-70m~2/person,and the index of the area of residential land for foreign production service personnel is 30-50m~2/person;Man-land functional relationship,according to the functional level of production and living facilities,the production and living units are divided into three levels of elementary,intermediate and advanced units.Their service radius is not more than 2.5km,2.5-4.0km and 4.0-8.0km;Man-land spatial relationship,according to the basic principles of man-land space layout,spatial planning and layout of man-land.Based on the comprehensive carrying capacity method,an evaluation model of the man-land relationship in rural areas is constructed,and the supporting role of rural resources and economic environment in the North China Plain to humans and the pressure of humans on the environment are explored,and provide a basis for the rationality of rural space reconstruction.Fourth,taking Pingyuan County,Dezhou City,Shandong Province as an Empirical Case of Rural Space Reconstruction.The rural spatial reconstruction planning layout of the plain county was completed,based on the rural man-land relationship system in the North China Plain area in the new period,through the analysis of ArcGIS buffers and the creation of Tyson polygons,and comprehensive consideration of actual influencing factor.The man-land relationship before and after the rural reconstruction is evaluated separately based on the man-land relationship evaluation model.The evaluation result is:the current man-land relationship in the plain county is extremely tense,and the reconstructed man-land relationship is in a coordinated state.In summary,this thesis builds a theoretical support system for the reconstruction of rural space from the perspective of man-land relationship,and demonstrates by case,which can provide a reference for the spatial development of the same type of rural areas.