地理科学 ›› 2020, Vol. 40 ›› Issue (6): 956-964.doi: 10.13249/j.cnki.sgs.2020.06.011

• • 上一篇    下一篇

肯尼亚交通优势度及其空间分异格局分析

郭政1,2(), 陈爽1,*(), 姚士谋1, 熊传合1   

  1. 1. 中国科学院南京地理与湖泊研究所流域地理学重点实验室,江苏 南京 210008
    2. 中国科学院大学,北京 100049
  • 收稿日期:2019-06-18 出版日期:2020-06-01 发布日期:2020-12-07
  • 通讯作者: 陈爽 E-mail:zguo@niglas.ac.cn;schens@niglas.ac.cn
  • 作者简介:郭政(1993−),男,安徽蚌埠人,博士研究生,主要从事城市与区域可持续发展研究。E-mail: zguo@niglas.ac.cn
  • 基金资助:
    国家重点研发计划项目(2018YFE0105900)、中国科学院海外基地项目(SAJC201609)资助

Transportation Superiority Degree and Its Spatial Differentiation Pattern in Kenya

Guo Zheng1,2(), Chen Shuang1,*(), Yao Shimou1, Xiong Chuanhe1   

  1. 1. Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, Jiangsu, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-06-18 Online:2020-06-01 Published:2020-12-07
  • Contact: Chen Shuang E-mail:zguo@niglas.ac.cn;schens@niglas.ac.cn
  • Supported by:
    National Key R & D Program of China (2018YFE0105900), Overseas Base Project of Chinese Academy of Sciences (SAJC201609).

摘要:

基于2018年肯尼亚铁路、公路、机场、港口等交通基础设施数据,设定交通优势度指数及交通网络连接度指数和交通对外通达度指数2个分指数,采用探索性数据分析法对肯尼亚交通优势度及其空间分异格局进行分析,并对其影响因素进行探讨。研究发现:① 肯尼亚交通优势度空间差异十分显著,以内罗毕、蒙巴萨和基苏木为主要交通节点的铁路沿线地区交通优势度水平明显高于其他地区;② 肯尼亚交通优势度空间分异格局总体上呈现出较强的非均衡性,交通网络连接度呈现出以内罗毕为核心,以铁路沿线为轴带呈圈层状向四周递减的空间分异格局,而交通对外通达度呈现出北部和西北部较低而南部和东南部较高的空间分异格局。③ 地形地貌、气候、水文、人口集聚、经济发展等是形成肯尼亚交通优势度空间分异的主要影响因素。对交通基础设施空间分布进行优化调整,积极引导经济空间合理布局,是推动肯尼亚经济健康持续发展的重要途经。

关键词: 交通优势度, 空间分异格局, 探索性空间数据分析, 肯尼亚

Abstract:

By constructing transportation superiority degree index and two sub-indices (traffic network connectivity, traffic external accessibility). This essay aims at evaluating the transportation superiority degree of the first level administration region in Kenya by using exploratory spatial data analysis method to find out the current spatial differentiation pattern of transportation superiority degree in Kenya from multi-dimensions, the influencing factors are also discussed. The conclusions are as follows: 1) Transportation superiority degree between different first level administrative regions shows significant spatial differences. Nairobi and Mombasa have the highest level of transportation superiority degree; Relatively high and medium transportation superiority degree of the first level administrative regions are roughly along the axis of Kenya railway in spatial distribution; Low and relatively low transportation superiority degree of the first level administrative regions are mainly located in the central inland and border areas. In terms of traffic network connectivity and traffic external accessibility, the first level administrative regions along the Kenya railway is stronger than the other first level administrative regions. 2) On the whole, the spatial pattern of transportation superiority degree in Kenya shows strong non-equilibrium. The specific manifestation is that the transportation superiority degree is bounded by the Equator, whereby the transportation superiority degree of the first level administrative regions south of the Equator is better than that of the north of the Equator. In addition, in the south of the Equator, the transportation superiority degree of the first level administrative regions along railway lines is better than that of other first level administrative regions. 3) The two sub-indices of transportation superiority degree in Kenya show significant spatial differentiation characteristics. Traffic network connectivity generally presents a spatial differentiation pattern with Nairobi as the core and Kenya railway as the axle belt, which decreases in a circle-layered manner to the surrounding areas, while traffic external accessibility roughly presents a spatial differentiation pattern from the southeast coast to the northwest inland and from south to north. 4) Topography, climate, hydrology, population density and economic development level have significant impacts on the spatial differentiation pattern of transportation superiority degree in Kenya. Kenya should firmly grasp the historical opportunity brought by 'The Belt and Road' initiatives, optimize and adjust the spatial distribution of transportation infrastructure, meanwhile, actively guiding the rational layout of economic space on this basis to promote faster and better economic development. Besides that, Kenya should attach importance to the planning and construction of road networks in border areas, actively promote the docking of railway and road networks in East African Community countries, and enhance its transportation links with surrounding countries. In order to promote the free flow of capital, labor, resources and products in East African Community countries, so as to achieve rapid economic development in Kenya and East Africa.

Key words: transportation superiority degree, spatial differentiation pattern, exploratory spatial data analysis, Kenya

中图分类号: 

  • K901.3