Research On Rural Settlement Spatial Layout Optimization

Since the reform and opening up,China’s social and economic development is very fast,the rural social and economic structure has also undergone great changes.A large number of agricultural surplus labor transfer from rural areas to cities,contributing to the construction of urbanization in our country,However,due to the traditional urban-rural dual structure,migrant farmers and city residents are not able to enjoy the same social welfare,so that they do not want to give up the home of the housing and land,then making expansion and renovation of their houses,so that China’s rural population in less at the same time,land area has been the increase in rural residents.In addition,due to the lack of supervision and restriction of government departments in the process of the construction of rural residential areas in our country,there are many scattered settlements,not concentrated,irregular and so on.But the existing rural residential construction planning advice was ignored,there is no complete system of guidance for rural governance,so that many areas of rural construction are faced with the development of blind,random construction,governance and other issues without.To sum up,the research on the optimal location of rural residential areas is the premise and foundation to get out of the current dilemma of rural land use,to break the two yuan system of urban and rural areas,and to build a new type of rural settlements.After the county zoning kiafeng County in 2014,Xiangfu area new rural construction pace is accelerating,the new rural construction planning also made more stringent requirements,(1)According to the actual situation of Xiang Fu,the Xiangfu spatial distribution of rural residents to analyze the current situation,from the layout,layout and residential plaque spatio-temporal pattern changes,using statistical methods,the method of GIS spatial analysis and landscape pattern index of Xiangfu areas of rural residential status distribution feature.(2)In the process of land suitability evaluation,the first rule of basic farmland is not as rural residential land area,and then from the natural factors,social factors and economic factors such as the selection of a number of indicators,using the analytic hierarchy process(AHP)to construct the evaluation index system,each single factor layer according to the weights of the evaluation system the area,using the method of comprehensive evaluation model for the optional range of suitability evaluation.(3)According to the results of suitability evaluation,on the one hand with the actual pointdistribution in a natural method to select the optimal continuous evaluation value as the optimization results of traditional residential sites,on the other hand,the traditional optimization results is the same as the number of targets,the ant colony algorithm,in order to cover the suitability evaluation value for the optimization of minimum distance the optimal target area and the target point,in many experiments to select the best number of ants,that the optimization results.(4)From the planning rationality,reachability analysis,several migration cost,reference of land use in 2020 the type of simulation results on the optimization results further refinement based on the classification,location results of ant colony optimization,on the basis of the optimization results of suitability evaluation value,make the weighted Voronoi diagram,determine the effect of optimization results of boundary setting reasonable optimization strategy.The main conclusions are as follows:1.in the analysis of the current situation of Xiangfu spatial distribution characteristics of rural residents can be obtained after each,Xiangfu Township rural residential uneven distribution,settlement size,irregular boundary integral,the distribution of rural settlement under traffic,rivers and other factors,and with the distance farther,effect of declining;rural settlements in large part from the public facilities in the distance,to the residents living inconvenience,in the past 12 years the change of land use in rural residential area,plaque decreases.2.the suitability evaluation results can be drawn,located in the plain area,suitability evaluation result is affected by the traffic River,Yuan Fang Xiang and Liu Dian Xiang due north of the Yellow River Township in large area is not suitable for the rural residential land,and Du Liangxiang,Fan Village and because of the influence factors of traffic Xiang Xi Jiang and rivers,there are some areas not suitable for rural residential land,cheliu Town,eight Bay and central Zhuxian Town overall regional suitability evaluation value is higher,in the region are more suited to rural residential land.3.according to the results of suitability evaluation,on the one hand with the actual point distribution in a natural method to select the optimal continuous evaluation value as the optimization results of traditional residential sites,on the other hand,the traditional optimization results is the same as the number of targets,the ant colony algorithm,in order to cover the suitability evaluation value distance the optimization objective is to minimize the optimal region and the target point,in many experiments to select the best number of ants,that the optimization results.In the planning of rationality,reachability analysis,several migration cost,time and space in comprehensive location results and ant colony optimization location results were analyzed after the discovery of the traditional optimization algorithm,ant colony optimization space location results in the distribution of each township based on the location and quantity are more balanced,the coverage is relatively wide,in the township the population coverage is consistent with the status of the population,the accessibility of schools and other public facilities better,smaller residential migration costs.Based on the suitability evaluation on the layout optimization of the ant colony algorithm of rural settlements,to cover the optimal evaluation value as the optimization objectives,to solve the problem of rural residential layout for a variety of factors provides a more objective optimization method to reduce the interference of human factors,also adds a new research direction for the study of ant colony optimization location.In the process of formulating the strategy,the results of the optimization of the site selection and land use type simulation results were analyzed,and the feasibility of the planning of rural residential sites was analyzed and verified.