Study On The Optimization Of Rural Residential Area Layout Based On Spatial Syntax And Multi-factor Evaluation

With the rapid development of China's economic society,a large number of rural surplus labor into the city,such issues as more and more hollow villages,lack planning of rural settlements,layout unreasonable,extensive use of land are further intensified.Now China is investing lots of funds to initiate land reclamation,of which one of the significant tasks is to optimize the layout of rural settlements.However,traditional means of optimizing the rural settlements are troubled with complexity and operational difficulties,which limit the launching of optimization work.Therefore,to carry out the optimization work of rural settlements in an orderly manner,it is necessary to systematically integrate the theories and methods of layout optimization for rural settlements into a comprehensive one,there is a great practical significance to formulate the optimization plan of rural settlements.Based on sorting out the conceptual frameworks of rural settlements,and combined with relevant theories and tasks,using the method of spatial syntax and multi-factor evaluation,then design the optimization scheme of rural residential layout.The influence of altitude,slope,water source and transportation on the layout of rural settlements in the study area was analyzed by GIS software.Then calculate the spatial intelligence degree of each rural settlement with the aid of space syntax software.What's more,this thesis should combine with multi-factor evaluation method to construct assessment indicator system for measuring the comprehensive influence of each rural residential area.With the combination of field strength model and gravity model,classify and provide optimization strategies for the layout of rural settlements.Take Cenxi,Guangxi as an example,based on above-mentioned theories and methodologies,this thesis provides systemic analysis of rural settlements in research areas with administrative villages as the evaluation unit,and then puts forward layout optimization methods.The main results and conclusions are as follows:(1)The distribution of rural settlements in villages of Cenxi is greatly influenced by topography,rivers and traffic network.Areas close to rivers and traffic network with low altitudes and gentle slopes are gathered by a large number of closely correlated rural settlements.(2)This thesis calculates the spatial intelligence degree with the help of space syntax software for syntactic analysis of rural settlements in Cenxi.And the result is those near town and municipal governments have higher spatial intelligence degree.Simeng village in Cencheng town has the highest degree of 0.98.And there are 15 rural residential evaluation units with intelligence degree higher than 0.7,and those are all located in the areas close to town or municipal governments with heavy traffic.(3)Combining with the application of multi-factor evaluation method,field strength model and gravity model,this thesis classifies 256 evaluation units of Cenxi city.Using the field strength model to mark off 27 priority development rural residential evaluation units,and then use the gravitational model to draw up 49 encourage development rural residential evaluation units,87 control development rural residential evaluation units and 93 migration and consolidation rural residential evaluation units.(4)According to the problems of all kinds of rural settlements,the thesis proposes corresponding strategies respectively.(1)For rural settlements with development as the priority,the area of construction land should be enlarged properly to provide housing security for migrants.More capital should be invested to improve infrastructure,speeding up urbanization and hence promoting economic sustainable development.(2)For units that encourage development,dynamic equilibrium of both quality and quantity of arable land should be guaranteed and the area of construction land should be strictly monitored.More funds should be invested to enhance the trade between surrounding rural settlements for the purpose of sharing resources and promoting mutual development of research areas.(3)For units that control development,the government should strengthen administration and prohibit expanding construction land,in order to protect farmland and thus boosting grain yield.Financial support is necessary to implement the arrangement and reform of internal idle land.(4)For units of migration and consolidation,based on asking for opinions of all villagers,the housing and employment issues of emigrants should be properly settled,and related policies for changes of title and compensation method should be made to make sure that the rights and interests of villagers would not be infringed.