Urban agricultural development mode based on functional differentiation

Abstract: To guide the rational utilization of agricultural resources and the revitalization and development of rural areas in mega-cities, this paper studies the spatial distribution rules and development patterns of agricultural multi-functions, Taking Shanghai as an example. The multifunctional agriculture was divided into four functions, namely, agricultural products supply, social security, culture and leisure, and ecological regulation function. By full consideration of cultural landscape, geographic location conditions and traffic factor, evaluation index system and model were built to analyze multifunctional spatial distribution rule and make clustering analysis. The result showed that 1) quantitative evaluation result can accurately reflect multifunctional spatial distribution law of agriculture in Shanghai and the distribution of various functions closely related to the natural condition, geographic location, traffic condition and economic development. 2) Agricultural multifunctional combinations of different streets were divided into five types: eco-structured development pattern, traditional agriculture development pattern, farming culture development pattern, cultural and leisure development pattern, balanced development pattern. Each pattern had corresponding development strategies. Radar analysis map of four agricultural multifunctional average evaluation values for towns of five agricultural multifunctional development patterns were constructed. Towns of eco-structured development pattern had almost no social security function. These patterns mainly located in the suburbs and there were almost no registered population engaged in agriculture. Radar map for towns of traditional agricultural development pattern showed that the agricultural products supply function was very high, and the quality grade of agricultural land in these towns was relatively high, because of the geographic location and traffic conditions, culture and leisure functions were not very high. Towns of traditional agricultural development pattern were suitable for developing traditional agriculture, improving the level of agricultural scale, agricultural production efficiency and agricultural product quality. Radar map for towns of farming cultural development pattern shows that the agricultural products supply function, culture and leisure function were all relatively high, but the ecological regulation function and the social security function were all at the medium level. The agricultural land proportion in these areas and the agricultural products supply function was relatively high. Towns of farming culture development pattern were suitable for developing large-scale agricultural production and small-scale agricultural workshops. Radar map for towns of cultural and leisure development pattern was close to those of agricultural culture development pattern, but its agricultural products supply function was obviously lower than those of farming culture development pattern. Radar map for towns of functional balanced development pattern showed that the supply function of agricultural products, social security, ecological regulation and cultural and leisure function were all at the middle level. These towns of functional balanced development pattern could select different combinations of four functions according to local situation and determine a more reasonable agricultural development pattern. The level of multi-functional development pattern was circular distribution, followed by cultural leisure, farming culture and traditional agricultural development pattern, while the eco-structured development pattern was interspersed in the cultural leisure development pattern. Five development patterns are highly correlated with planned agricultural and ecological functional zones. The spatial distribution law and development pattern of agricultural multi-function are according with actual situation of Shanghai. This study can provide references for guiding rational use and protection of agricultural resource, also for rural development and revitalization in large city.