Research On The Accessibility Of Public Green Space In Small Towns Based On Spatial Syntax

Public green land planning as an important part of the "urban ecological system,urban livable wind vane",the residents can facilitate access to enjoy the public recreation services is a measure of an important symbol for urban livable level,the sustainable development of urban environment,harmony of man land relationship.Since the 80 s of the 20 th century,evaluation index system of China’s public green space has been to urban per capita(public,park green area,green rate,green coverage rate of three basic area ratio index as the core indicators to guide urban public green space construction,these indicators can only from the "quantity" of the basic control,it is difficult to in the actual implementation program specific guidance public green "quality" of the development,can not truly reflect the public green space of living service effectiveness.This paper according to the evaluation index system of urban public green sp ace,in full consideration of public green space ecological,social and economic function introduction of accessibility evaluation,reachability is added an important evaluation index,and comprehensive factors of the public green space service ability to make a real evaluation.The research object and the public green space of small towns and public green space were further studied and summarized 。According to the spatial syntax theory,three main factors are selected: the connection value,the depth value,the integration degree of the public green space can be evaluated and quantified..Then,based on the factor evaluation and value,a set of evaluation values of urban public green space(accessibility)can be constructed..And through the actual case analysis,it is concluded that in Hunan Province Loudi City area of Shuifu County,Chenzhou City Guidong County and Miluo City Town area of accessibility index three quantization factor is in the range of validation and the questionnaire form test factors and up to evaluation of the relationship,summed up the operation method based on space syntax of small towns public green space accessibility evaluation.Finally based on quantitative evaluation range and function analysis by using the powerful spatial space syntax DETHPMAP10,of Hunan Province County factory Jiao Zhen public green status and planning of public green space plan of accessibilit y evaluation.The value of the reachable evaluation and the factor value is obtained,and the scheme of optimizing public green space is put forward..The accessibility of public green space index for evaluating the quality of urban living environment,a measure of urban ecological system,urban economic development functions and great potential value,it is an important s upplement to widely used in some urban public green environment and public green space service quality evaluation index,the quantitative evaluation of it makes the practical implementation of accessibility index has the possibility of further.At the same time,the optimization measures based on the quantitative index,also have a strong practical significance.