区域交通状况评价的GIS方法

Evaluation of regional transportation situation with the GIS method

交通状况在区域社会经济可持续发展中占有重要的地位．因基于路径分析和网络分析的常规交通状况量度方法．未考虑区域内交通网络的空间分布状况及居民点的区位分布特征。也未考虑研究区外的交通模式对研究区内特征的空间影响．使得量度结果具有不确定性、并不能完全反映交通运输的地域保证程度：提出一种基于分类分级交通模式加权欧氏距离函数来度量区域交通状况的方法、它综合考虑了区域的形状因子、各种交通模式的空间分布状况、居民点的区位分布特征及研究区外交通模式的影响．兼具统计特性与空间特性；实践证明．这种方法对于区域交通状况描述是十分适合的。

Transportation situation takes an important role in regional sustainable development ofsocial-economy. The conventional measuring methods based on path analysis and transportationnetworks, for having not considered the spatial distribution features of transportation networks andresident areas, as well as the spatial innuence of outside transportation modes on the featureswithin the research regions, are deficient to the description of regional transportation situation. AGIS method which uses the weight Euclid distance to evaluate the transportation situation is setforward in the paper to overcome such deficiency. It regards the evaluation of transportationsituation as a kind of quantization of transportation accessibility and describes it with the linearfunctions of weight Euclid distance to different transportation modes. The practice has proved thatthe method is efficient to the evaluation of regional transportation situation and has been appliedin the project of regional sustainable development of Huanghuihai Plain in China.