Optimization Of Farmland Spatial Layout Based On Gravitational Correction Model And Weighted Voronoi Model

The cultivated land resource is the essence of the land,and it is the material base of the human life.Along with the industrialization and city urbanization,non-agricultural construction land occupation of cultivated land,the destruction of ecological balance problem is becoming increasingly acute,so how to rationally cultivated land resource allocation,adjustment of the spatial distribution of cultivated land structure,the rational allocation of land resources for future have important practical significance.This paper selects the western mountain town has typical Yangxu town as the study area,introducing the interaction analysis between cultivated land value spatial gravity model,combined with the weighted Voronoi model divided the growth pole of spatial extent,calculation method of evaluation by use of comprehensive influence,to identify the optimization of cultivated land,finally put forward the optimization model for in the study area to optimize and develop the current patch layout optimization scheme of cultivated land reasonably,provide scientific basis and technical support for the number and quality of farmed land management work.The main conclusions of the paper are as follows:(1)In the article,the influence of the improved gravitational model and the weighted Voronoi diagram model is used to analyze the influencing factors such as the scale of cultivated land,the grade of cultivated land and the slope,The relationship between the plots of cultivated plots and the plots of parcels of cultivated land is the growth pole of cultivated land.According to the five dimension indexes of growth pole,location condition,natural condition,social,economic condition and humanistic habit,we construct the weighted Voronoi diagram evaluation index system,and visualize the spatial influence range of cultivated plots,and optimizethe direction of the cultivated land layout.(2)Due to the spatial influence of cultivated plots,the general effect of cultivated land on other cultivated plots in the surrounding area can be reflected in the widespread impact.The article will start from the two factors of the internal factors of the cultivated land itself and the external elements of the social characteristics which the cultivated land is given,and combine the above evaluation index system to calculate the comprehensive influence value of the cultivated land patches,Breaks method(natural breaks)will score points level.(3)Based on the contrast between cultivated land substantial influence on the classification,combined with the analysis of the spatial extent of cultivated land in the weighted Voronoi diagram,space is divided into construction land Yangxu town merge type,finishing contraction type and keep tapping type three optimization model.Through the analysis of the different modes of operation,summed up the spatial distribution of cultivated land optimization scheme,to promote the overall development of urbanization and cultivated land intensive,to provide the reference for the order to ensure the future development of cultivated land.