Spatial Differentiation Of Urban Agriculture Function Based On "Regional Integration"

Changsha,Zhuzhou and Xiangtan City Circle is located in the central and eastern part of Hunan Province,China.It is an important part of the middle reaches of the Yangtze River,including Changsha,Zhuzhou and Xiangtan.The total area is 28,000 square kilometers.It is the core growth pole of Hunan's economic development and also the Chinese grain.An important place of origin.In the Changsha-Zhuzhou-Xiangtan urban agglomeration,the basins and hills are intertwined,the towns and villages are intertwined,and the good mountain,water,and green-hearted ecological open areas;rich in natural water resources,is known as the "Thousand Lakes Province".As the birthplace of red culture,the birthplace of Shennong culture attracts tourists from all over the world.However,with the acceleration of the process of "globalization" and "urbanization",the expansion of the city has destroyed the agricultural ecological environment.At the same time,the demand for agricultural multi-functionality by urban residents is increasing.Therefore,it is extremely urgent to develop multi-functional coordinated development of urban agriculture.From the perspective of regional integration development,this study aims to establish a research framework for urban agricultural function evaluation with the goal of urban agriculture's production economic function,cultural leisure function and ecological function.According to the collection of indicator basic data,the indicators of urban agriculture are measured,and the value of urban agriculture is spatialized by studying the method of regional rasterization.Finally,based on the results of the calculation,combined with ArcGIS and Geoda platform,the spatial differentiation of urban agriculture is analyzed.The research results can serve as the basis for supporting urban planning and agricultural development.The urban economic production economic function of Changsha,Zhuzhou and Xiangtan city circles showed a gradual increase from suburban to remote suburbs.Changsha showed a gradual decrease from north to south.Zhuzhou showed a spatial layout that gradually decreased from south to north and Xiangtan did not change significantly.Overall,the economic function of urban agriculture production in Changsha City is significantly lower than that of Xiangtan and Zhuzhou.The change of production economic function value of Changsha is relatively small.The economic function value of urban agriculture production in Xiangtan and Zhuzhou has changed significantly in 2013;the production economy of Changsha,Zhuzhou and Xiangtan The function is mainly distributed in the spatial structure,and there is obvious positive correlation.It is mainly distributed in Changsha and southern Zhuzhou,and gradually spreads to the suburban area.The spatial polarization of Xiangtan is not obvious.The urban agricultural culture and leisure function of the Changsha-Zhuzhou-Xiangtan city circle showed an obvious spatial distribution of strips,showing a steady and sustained growth from 2010 to 2016.Changsha gradually decreases from the central area to the surrounding areas,and both Zhuzhou and Xiangtan gradually reduce the spatial belt pattern from the outer suburbs to the suburban areas.The value of urban agricultural culture and leisure function in Changsha is significantly lower than that of Xiangtan and Zhuzhou,and the overall trend is steadily rising.However,the cultural and leisure functions of Xiangtan and Zhuzhou are changing greatly.The value of urban agricultural culture and leisure function in Xiangtan City has decreased.Increased.There is a significant positive correlation in spatial structure,mainly in Changsha and Zhuzhou The high-high accumulation in Changsha is mainly concentrated in the suburbs,showing a spatial pattern that gradually spreads from the suburbs to the outer suburbs.Zhuzhou high-high accumulation areas are mainly concentrated in the outer suburbs.It shows a spatial pattern that gradually spreads from the outer suburbs to the suburbs,and the extremes of Xiangtan are not obvious.The urban agro-ecological function of Changsha,Zhuzhou and Xiangtan showed a stable and continuous spatial pattern.The urban agro-ecological function of the near-river area in 2010-2016 was higher.The urban agro-ecological function value of Changsha City was significantly lower than that of Xiangtan and Zhuzhou,and it was presented from the suburb to The spatial pattern of the outer suburbs is gradually reduced.The overall higher value of Zhuzhou is concentrated in the south,and it shows a spatially different pattern from south to north,which is gradually reduced from the outer suburbs to the suburbs.The spatial structure is dominated by mean value,the ultimate change is not obvious,and the spatial correlation is weak.The study on spatial differentiation of urban agriculture is based on desk research and field investigations,collecting and arranging basic data on agricultural production,economy,culture,etc.,and comprehensively constructing a matrix of urban agricultural function evaluation indicators.Breaking the administrative division within the study area,the research area is divided into 1KM×KM grids,and the research units are refined to make the spatial visualization of the research results more scientific and precise.Finally,based on the results of spatial differentiation,combined with the strategy of regional integration development,it provides suggestions for the development of various functions of urban agriculture.