The Research On The Construction Of Rural Spatial Basic Unit Center System In Pucheng County

As the basic carrier of urban-rural integrated development,county space plays an important role in connecting urban and rural relations,extending public service coverage,coordinating surrounding development,implementing village unity,and realizing rural revitalization.In view of the problems existing in counties such as fragile farmland ecosystem,incomplete urban and village system pattern,unstable and uncoordinated rural production and living space,responding to the development trend of cross-village and cross-town farmland planting and concentrated contiguous agricultural industrial parks,and facing the industry demand of vertical transmission of territorial spatial planning from the overall pattern to rural units,this paper takes Pucheng County as an example based on geospatial data,studies the steady state foundation of agricultural ecology that adapts to the natural ecological geographical pattern,builds farmland production units that adapt to modern agricultural production and management mode,and rural living units that adapt to urban and rural life circle,and proposes the identification method of rural spatial unit center system with the coordination of three generations.It has certain research value for promoting the reasonable allocation of rural vitalization and development elements,realizing the integration of urban and rural areas in counties,and forming a new pattern of coordination between the three and the living.First of all,this paper defines the connotation of rural spatial basic unit,which is oriented to the steady state foundation of agriculture,and forms a composite unit of Sansheng coordination through multi-level central system coupling under a certain scale.From the perspective of the relationship between town and village and the perspective of industrial chain,the paper expounds the spatial relationship of rural life growth center and the hierarchical relationship of production growth center,and summarizes the function mode of rural space basic unit.The influence factors and mechanism of "center-unit" are summarized as the internal influence brought by agricultural production base,the external drive brought by public service infrastructure,and the diffusion of rural agricultural economic radiation.Secondly,this paper puts forward the integration path of "agricultural development background-growth center identification-basic unit construction".By constructing the agricultural development background based on the distribution of ecological factors and agricultural planting zoning,the comprehensive development zone of the county will be formed,and the production facility center will be identified by the content of the industrial chain,the living support center will be identified by the comprehensive superimposed evaluation,and the potential growth center will be identified by the spatial location distribution.Combined with the minimum impedance model of location allocation,a 5-minute farming travel circle and a 10-minute living and economic complex circle were constructed in the county area.The construction path of county units was summarized into three planning modes: 10-minute production and residence coordination type in the suburban plain,20-minute scale planting type in the suburban plain and 15-minute ecological planting type in the northern mountainous area.Finally,in Pucheng county,the existing production and living facilities and the identified production and living facilities in the rural basic unit that can connect the development of the village are proposed for spatial distribution and facility configuration requirements.The boundary of integrated units is modified through the administrative boundary of village,for those that can be modified in combination with the boundary of administrative villages in terms of spatial form,rigid boundary placement shall be given;The elastic boundary adjustment is carried out for the natural villages covered within the given transportation cost range.The common zoning has 45 rural spatial basic units,including 43 advantageous new community living units and 15 general new community living units,which provide a reference for realizing rural revitalization in plain areas,promoting high-quality development in rural areas,and implementing joint village planning.