关中—天水经济区路网空间通达性分析

doi:10.11820/dlkxjz.2012.06.008

地理科学进展 ›› 2012, Vol. 31 ›› Issue (6): 724-732.doi: 10.11820/dlkxjz.2012.06.008

关中—天水经济区路网空间通达性分析

白永平, 陈博文, 吴常艳

西北师范大学地理与环境科学学院, 兰州730070

收稿日期:2011-11-01 修回日期:2012-01-01 出版日期:2012-06-25 发布日期:2012-06-25
作者简介:白永平(1961-),男,博士,教授,博士生导师,江苏省南京人,主要从事区域发展与区域管理方面的研究。E-mail: baiyp@nwnu.edu.cn
基金资助:
国家自然科学基金项目(40771054);高等学校博士学科点专项科研基金联合资助课题(20106203110002);西北师范大学知识与科技创新团队项目(nwnu-kjcxgc-03-50)。

Spatial Accessibility of Road Network in Guanzhong-Tianshui Economic Region

BAI Yongping, CHEN Bowen, WU Changyan

School of Geography and Environment, Northwest Normal University, Lanzhou 730070, China

Received:2011-11-01 Revised:2012-01-01 Online:2012-06-25 Published:2012-06-25

摘要/Abstract

摘要： 通达性是人文地理学、城市与区域规划、交通运输经济学等学科的研究热点之一。随着应用需求的持续加大和技术研究的不断深入,通达性测度方法和度量体系正在逐步完善。以关中—天水经济区交通路网为例,本文试图将城市、交通和区域结合起来全面阐述区域通达性。采用空间句法模型、可达性相关指标和等时圈通过特征点算法,多视角综合测度经济区路网通达性的空间格局。研究结果表明:①区域路网体系较为完善,路网线段集聚明显;线段式空间伸展格局呈“点—轴”状发散,轴线式空间伸展格局呈“干—枝”状发散,初步形成核心圈、中间圈、外围圈三大等级圈层以及“米”字型路网骨架,区域交通运输与城镇发展水平表现出较强的共轭协同发展关系。②城镇区域可达性在较大程度上取决于区域中心性和周边路网发达程度,区域路网单中心极化现象比较明显,西安市对整个区域路网的控制作用过于突出。③区域通达度空间分布各异,核心板块连续性较好,外围板块破碎化明显。关中、天水两大梯度板块差异较大,天水与关中通达度中高值区出现断裂。鉴于区域中心偏于西安以西的现实,适度培育杨陵或宝鸡为区域路网的副中心城市;加快关中—天水高等级快速交通建设,推进关中—天水区域一体化进程。

关键词: 等时圈, 关中&mdash, 空间句法, 日常可达性, 天水经济区, 通达性

Abstract: Accessibility is a research topic in the field of human geography, urban and regional planning, and transportation economics. With a rapid increase of application demands and the unceasing development of technology researches, accessibility measurement approaches are developing quickly and the methodology is being formed. This paper attempts to combine factors such as cities, transport access and region to elaborate the accessibility in Guanzhong-Tianshui economic region. Based on space syntax, accessibility and isochronous rings derived from calculation of feature points, the spatial patterns of accessibility of road network are evaluated synthetically from a multi-angle. The results are shown as follows: (1) The system of road network is better and the concentration of road network is obvious. The spatial pattern of segment type stretches along the“point-axis” style while the spatial pattern of axis type stretches along the“trunk-branch”shape. Core ring, middle ring and periphery ring of the three-grade level as well as“Britain flag-shaped”road network are preliminary forms. It is shown that there exists a strong reciprocal-coordinate relationship between the regional accessibility pattern and the entire development level of Guanzhong-Tianshui economic region. (2) Urban accessibility, to a great extent, depends on the regional geometric centre and the development level of the surrounding road network. The phenomena of single-center polarization of regional road network is obvious. And the control effects of Xi’an city to the road network is too outstanding. (3) The spatial distribution of regional accessibility is different, the continuity of the core plate is better, and the fragmentation of the extended plate is obvious. It is different between Guanzhong area and Tianshui area, so that the area with medium and high values is broken between Guanzhong and Tianshui areas. Considering tha fact that the regional geometric center is partial in the western part of Xi’an city, Yangling city or Baoji city should be treated as a sub-center city of the regional road network. Promoting the construction of Guanzhong-Tianshui high-grade rapid transit is quite useful for the regional integration of Guanzhong-Tianshui economic region.

Key words: daily accessibility, Guangzhong-Tianshui economic region, isochronous rings, space syntax, spatial accessibility

白永平, 陈博文, 吴常艳. 关中—天水经济区路网空间通达性分析[J]. 地理科学进展, 2012, 31(6): 724-732.

BAI Yongping, CHEN Bowen, WU Changyan. Spatial Accessibility of Road Network in Guanzhong-Tianshui Economic Region[J]. PROGRESS IN GEOGRAPHY, 2012, 31(6): 724-732.

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关中—天水经济区路网空间通达性分析

Spatial Accessibility of Road Network in Guanzhong-Tianshui Economic Region

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