高铁对欠发达地区可达性及经济联系的空间影响--以兰新高铁为例

Spatial Impact of High-speed Railway on Accessibility and Economic Ties of Underdeveloped Region:A Case of Lanzhou-Xinjiang High-speed Rail

选取加权平均旅行时间测度可达性,运用修正后的引力模型计算经济联系强度,分析兰新高铁对沿线9个城市经济联系的空间影响。结果表明:高铁开通后,沿线城市可达性增长幅度呈现空间差异性,廊道东段城市可达性发展潜力较西段城市更强劲,各省份经济基础较好的城市可达性提升空间更明显。经济联系总量增长幅度呈现出廊道东段高、中段低、西段差异大的不均衡状态,哈密成为高铁开通后经济联系高值区。为适应高铁背景下城市转型的紧迫性和必要性,兰新廊道应建立综合交通运输体系,各省会城市发挥龙头作用,沿线中小城市挖掘各自特色,创新经济发展模式,脱掉“欠发达”的标签,促进区域协同发展。

The weighted average travel time was selected to measure the accessibility.The modified gravity model was used to measure the intensity of urban economic ties and simulated the spatial impact of Lanzhou-Xinjiang high-speed rail on the economic ties of nine cities along the line.The results showed that:After the opening of the Lanzhou-Xinjiang high-speed rail,the growth rate of accessibility along the line showed spatial differences.The accessibility development potential of the eastern section of the corridor was stronger than that of the western part.There were more room for improvement.The growth rate of economic ties was uneven in the eastern section,the middle section was low,and the difference in the western section was large.Hami has become a high-value area after the opening of the high-speed rail.In order to adapt to the urgency and necessity of urban transformation in the context of high-speed rail,the Lanzhou-Xinjiang corridor should establish a comprehensive transportation system with provincial capital cities playing a leading role,and small and medium-sized cities along the line to tap their own characteristics,innovate economic development models,and get rid of“underdeveloped”label to promote regional coordinated development.