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在对可达性评价方法进行综合分析的基础上,提出基于Arcgis的简易可达性评价方法,并结合主成分分析、聚类分析等方法对1997年和2007年江西省一、二、三级中心地进行区域可达性评价。结果表明:经过10 a的发展,江西区域可达性得到明显改善;可达性的区域差异有所缩小;高等级的中心地提供更高等级的商品和服务,接近高等级中心地的区域可获得更好的发展机会;交通建设对区域可达性的影响符合边际效用递减原理,增加交通欠发达地区的投资有助于实现区域公平;可达性差的区域获得的发展机会较少,经济发展明显滞后;江西赣中南、赣南、赣西北的可达性发展缓慢,影响到区域发展和区域公平。
Based on a comprehensive analysis of reachability evaluation methods, this paper proposes a simple reachability evaluation method based on Arcgis, and combined with principal component analysis and cluster analysis, the paper evaluates the first, second and third level of Jiangxi Province in 1997 and 2007 Center for regional accessibility evaluation. The results show that after 10 years of development, the regional accessibility of Jiangxi has been significantly improved; the regional differences of accessibility have been narrowed; the high-grade centers provide higher-grade goods and services, and the areas close to the high-level centers Access to better development opportunities; the impact of transport construction on regional accessibility meets the principle of diminishing marginal utility, increasing investment in underdeveloped areas contributes to regional fairness; less accessible areas have fewer opportunities for development and economic development Obviously lagging behind; the accessibility of Jiangxi-Jiangxi-South-Central, South-Jiangxi and North-western Jiangxi has been slow to develop, affecting both regional development and regional fairness.