川藏铁路建设的空间影响效应研究
杜德林(1994—),男,山西霍州人,博士,特别研究助理,主要从事交通地理与区域发展研究。E-mail: dudl.19b@igsnrr.ac.cn |
收稿日期: 2022-05-12
修回日期: 2022-09-10
网络出版日期: 2023-10-20
基金资助
国家社会科学基金重大项目(20&ZD099)
版权
Spatial effect of the Sichuan-Xizang Railway
Received date: 2022-05-12
Revised date: 2022-09-10
Online published: 2023-10-20
Supported by
Major Program of National Social Science Foundation of China(20&ZD099)
Copyright
川藏铁路是中国西南地区的干线铁路,完善了西部地区的交通基础设施,对西部与中东部地区的融合与协调发展具有重要意义。鉴于此,本文以川藏铁路为研究对象,以各类路网数据和社会经济数据为基础,结合川藏地区的特殊性,从全国尺度测度川藏铁路对城市可达性的提升,剖析其对区域潜在联系和高铁网络结构的影响,以期为中国跨区域交通基础设施与区域协调发展提供借鉴与参考。研究结果表明:川藏铁路建设极大改善了西藏城市的区位条件,不仅对沿线城市有重要影响,也提高了其他城市的可达性,在空间上促使沿线分散的圈层结构拓展为沿川藏铁路的廊道结构,尤其便利了西藏与西南和华南地区的联系;川藏铁路促进了西藏与其他地区的联系,完善了高铁网络结构,有利于西藏与四川形成紧密关系;川藏铁路促进了边疆地区、贫困县以及少数民族自治县等特殊地区的经济发展,对于维护国家安全和民族团结具有十分重要的意义。
杜德林 , 黄洁 , 张洋 , 张则雯 . 川藏铁路建设的空间影响效应研究[J]. 地理科学, 2023 , 43(10) : 1710 -1719 . DOI: 10.13249/j.cnki.sgs.2023.10.003
As a trunk railway in Southwest China, Sichuan-Xizang Railway has improved the transportation infrastructure in the western China, and is of great significance to the integration and coordinated development. This paper takes Sichuan-Xizang Railway as the research object, and calculates the accessibility of cities along the railway based on the network of roads and railways. Combined with the particularity of Sichuan and Xizang, the influence of Sichuan-Xizang Railway on urban accessibility and regional development is analyzed from the national scale, in order to provide reference for the coordinated development of China's trans-regional transportation infrastructure and regional development. The research results show: First, the construction of the Sichuan-Xizang Railway has notably enhanced accessibility for cities along the route. The once scattered circular layout has evolved into a corridor structure running parallel to the railway. Second, in comparison to Sichuan, the Sichuan-Xizang Railway has a more profound impact on the accessibility of cities in Xizang, particularly in the central locations like Linzhi and Changdu. Moreover, this impact extends beyond the railway route, enhancing connections between cities in Xizang and the rest of the country, particularly with the southwestern and southern regions. This suggests that the influence of the Sichuan-Xizang Railway extends throughout the entire Xizang. Third, Sichuan and Xizang are characterized by its concentration of economically disadvantaged counties and a diverse population of ethnic minorities, all while boasting abundant tourism resources. The railway significantly improves accessibility to border regions, impoverished counties, and autonomous counties inhabited by ethnic minorities. This has considerable implications for national security, ethnic unity, and regional integration and development. Finally, when viewed from an organizational network perspective, the introduction of train services along the Sichuan-Xizang Railway has enhanced the structural characteristics of the national high-speed rail network, with particular benefits for the southwest region. As the coverage of direct train services expands, cities in Xizang and Sichuan become more closely interconnected. In summary, the construction of the Sichuan-Xizang Railway is instrumental in facilitating connections between the southwest region, and eastern and central regions, with significant implications for national security, ethnic unity, and the promotion of regional integration and development.
表1 川藏铁路建设对沿线城市可达性的影响Table 1 Improvement of accessibility of cities along the Sichuan-Xizang Railway |
拉萨 | 山南 | 林芝 | 昌都 | 甘孜 | 雅安 | 成都 | 平均值 | |
川藏铁路建设前/h | 23.21 | 26.51 | 28.62 | 22.55 | 16.26 | 8.72 | 7.56 | 19.06 |
川藏铁路建设后/h | 17.71 | 18.51 | 16.11 | 12.28 | 13.02 | 7.98 | 7.35 | 13.28 |
可达性提升/h | 5.50 | 8.00 | 12.51 | 10.27 | 3.24 | 0.74 | 0.21 | 5.78 |
表2 川藏铁路建设对高铁网络结构影响Table 2 Impact of the Sichuan-Xizang Railway on the structure of high-speed rail network |
指标 | 全国范围 | 西部地区 | 西南地区 | |||||||||||
情景1 | 情景2 | 情景3 | 情景4 | 情景1 | 情景2 | 情景3 | 情景4 | 情景1 | 情景2 | 情景3 | 情景4 | |||
注:海南省和港澳台数据暂缺;城市数量包括各区域已有高铁站点城市与川藏铁路沿线城市。 | ||||||||||||||
城市数量 | 242 | 242 | 242 | 242 | 67 | 67 | 67 | 67 | 33 | 33 | 33 | 33 | ||
城市对数量 | 7280 | 7301 | 7367 | 7415 | 506 | 527 | 593 | 641 | 169 | 190 | 256 | 304 | ||
成环率 | 0.243 | 0.244 | 0.246 | 0.248 | 0.205 | 0.215 | 0.246 | 0.268 | 0.276 | 0.319 | 0.452 | 0.548 | ||
连接率 | 30.083 | 30.169 | 30.442 | 30.640 | 7.552 | 7.866 | 8.851 | 9.567 | 5.121 | 5.758 | 7.758 | 9.212 | ||
图密度 | 0.250 | 0.250 | 0.253 | 0.254 | 0.229 | 0.238 | 0.268 | 0.290 | 0.320 | 0.360 | 0.485 | 0.576 |
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