基于GIS的可达性评价方法比较

Comparing accessibility measures based on GIS

可达性是交通及城市研究中的一个非常重要和基础的指标 ,关于该指标的评价方法繁多 ,因此评价方法的选择尤为重要。以江门市为例 ,以地理信息系统为技术平台 ,用实证的方法 ,通过比较几种常用可达性评价方法的结果与城市密度的相关性大小 ,来选择合适的方法 ,同时对基于地理信息系统的可达性评价技术作了一定的探讨。

Accessibility is an important basal indicator in urban and transportation study areas and there are so many measures to evaluate the accessibility.So it's very important that how to choose an appropriate measure for our studies.In order to choose the appropriate measure,some correlativities between accessibilities evaluated by some familiar measures and urban density of Jiangmen are compared.The GIS-based technique of accessibility measure is discussed also.