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不同形式的可达性指标所揭示的交通基础设施可达性特征具有差异性,客观地将不同指标进行综合以全面掌握可达性效应,对于科学评估交通基础设施新建的效果具有重要意义。文章综合运用GIS网络分析、Super-DEA、空间变差函数等多种研究方法,从空间相互作用成本和效益出发,选取4种常用可达性指标和本文构建的综合可达性指数分析了厦深高铁开通引起的粤闽沿线地区可达性变化与空间分异特征。结果表明:厦深高铁开通在整体上显著降低广东省城镇出行时间的同时,扩大了福建省城镇空间相互作用潜力与吸引范围;综合可达性指数形成了以珠三角中东部地区为核心,向外围逐渐递减的空间分异特征,广东省综合可达性水平明显优于福建省;厦深高铁的开通促进了区域可达性公平性水平的提升,广东清远、河源、潮州以及韶关部分地区、福建的龙岩、漳州等地综合可达性指数变化有利于可达性空间公平性水平的提高;粤西和闽北地区、核心地域的珠三角东部和中部地区综合可达性指数变化则引起了可达性空间差异的增加。
The accessibility characteristics of traffic infrastructure revealed by different forms of reachability indicators are different. Objectively integrating different indicators to fully understand the reachability effect is of great significance for scientifically evaluating the new effect of traffic infrastructure. In this paper, we use GIS network analysis, Super-DEA, Spatial Variation Function and other methods to analyze the cost and benefit of spatial interaction. Four common accessibility indices and the comprehensive accessibility index Reachability and Spatial Differentiation Characteristics of Regions along the Border of Guangdong and Fujian Caused by the Opening of Shenzhen High Speed Railways. The results show that the opening of Xiamen-Shenzhen high-speed railway significantly reduces the travel time of cities and towns in Guangdong Province as a whole, and expands the potential and attraction range of urban space interaction in Fujian Province. The comprehensive accessibility index has formed a model that takes the middle and eastern Pearl River Delta as the core, The gradual decline of the periphery of the spatial differentiation characteristics of Guangdong comprehensive accessibility was significantly better than that of Fujian Province; Xiamen-Shenzhen High Speed Rail opened to promote the fairness of regional accessibility to enhance the level of Guangdong Qingyuan, Heyuan, Chaozhou and Shaoguan parts, The change of comprehensive reachability index of Longyan, Zhangzhou and other places in Fujian is in favor of the improvement of the fairness of reachability; in the western and northern regions of Guangdong, changes in the comprehensive reachability index in the eastern and central parts of the Pearl River Delta in western Guangdong and northern China have caused Increased space differences in accessibility.