广州市地铁可达性时空演化及其对公交可达性的影响

doi:10.11820/dlkxjz.2014.08.008

Abstract

Abstract:

Investigating effects of subway on urban public transportation network and accessibility is important because it contributes to sound planning of subway systems, improving urban public transport service accessibility, and providing possibility for the transformation of individual travel modes. This research uses the theories and methods of accessibility study to explore the relationship between the development of urban rail system and bus services, taking Guangzhou as an example. The study focuses on the status of public transportation system in four years (2000, 2003, 2009 and 2012). Data used in this study cover the stations and networks of buses and subways that come from our digital processing with GIS. Using published maps and Internet data as sources, this study established a database of public transport in different years. It uses complex network theory to establish the model of public transportation network in Guangzhou and quantitatively analyses the influence of urban rail system on bus accessibility through a comparison of the urban transportation network that incorporates urban rail system and the bus network that did not include urban rail system. The evolution of the spatial pattern of public transportation accessibility in different time periods is also discussed. Subway accessibility analysis is based on subway station and network accessibility and the change in center of high accessibility is analyzed to represent network accessibility change over time. The purpose of this study is to provide theoretical support for an integrated development of urban public transportation system through the analysis of the comprehensive influence of subway construction on urban public transportation. The principal findings of this study are as follows: (1) The Guangzhou subway network successfully completed the transformation from the tree-shaped to the loop network. The high accessibility center of the Guangzhou subway network moved to the east and south and this is consistent with the direction of the city's spatial expansion. (2) The incorporation of the urban rail system did have impacts on the overall accessibility of the public transportation network. (3) The subway network influences the spatial pattern of Guangzhou public transport accessibility. Along the metro line public transport accessibility is better than other regions. (4) Through the comparison of accessibility over years, we found that urban subway network expands residents' travel range and shorten travel time at the same time. As urban rail network continues to expand, public transport accessibility will steadily improve along the subway lines. This study only discusses transportation infrastructure-the subway and bus networks. Travel demand of city residents is not considered in this study. Future research can examine the coordination of the subway network and urban public transportation network and explore demand and supply of subway and bus networks by taking into account the distribution of resident travel demands..

Key words: subway accessibility, public transportation accessibility, complex network, Guangzhou

CLC Number:

K901

Xiaoyan HUANG, Shuang ZHANG, Xiaoshu CAO. Spatial-temporal evolution of Guangzhou subway accessibility and its effects on the accessibility of public transportation services[J].PROGRESS IN GEOGRAPHY, 2014, 33(8): 1078-1089.

Figures/Tables 9

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References 38

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	2000	2003	2009	2012
站点个数 / 个	16	31	54	114
站点服务范围 / km²	23.77	45.52	82.45	164.83
城市建成区面积 / km²	431	608	927	—
占建成区比重 / %	5.52	7.49	8.89	—
建成区增长率 / %	—	41.07	52.47	—
服务范围增长率 / %	—	91.48	81.13	99.91

年份	结点数	网络边数	网络子图数	连接率	环路指数	网络直径	实际成环率	实际结合度
2003	31	30	1	0.97	0	15	0.000	0.345
2009	59	60	1	1.02	2	33	0.019	0.351
2012	120	123	1	1.03	4	35	0.017	0.347

年份	公交站点服务范围/km²	越秀区	荔湾区	海珠区	天河区	黄埔区	白云区	番禺区	广州市区
2000	地铁加入前	27.98	22.27	39.45	40.64	8.42	62.40	4.22	205.38
	地铁加入后	28.01	23.78	39.45	40.93	8.42	62.40	4.22	208.43
	变化面积	0.03	1.51	0	0.29	0	0	0	3.05
2003	地铁加入前	29.46	32.48	47.08	52.78	17.34	98.09	19.89	297.13
	地铁加入后	29.75	33.48	49.93	53.09	17.34	98.30	19.89	302.89
	变化面积	0.29	1	2.86	0.31	0	0.21	0	5.77
2009	地铁加入前	30.96	38.39	60.36	76.94	27.94	162.21	50.96	447.77
	地铁加入后	31.15	39.58	63.16	77.10	27.94	162.29	53.79	467.93
	变化面积	0.19	1.19	2.80	0.16	0	0.08	2.83	20.16
2012	地铁加入前	31.23	43.97	63.14	84.97	34.02	240.33	205.04	702.69
	地铁加入后	31.45	45.92	65.60	86.98	34.71	242.49	212.16	729.16
	变化面积	0.22	1.95	2.47	2.01	0.69	2.15	7.12	26.46

年份	地铁加入前公交网络平均可达时间/min	地铁加入后公交网络平均可达时间/min	变化程度/min	变化率/%
2000	35.52	33.78	1.74	4.89
2003	46.15	42.42	3.73	8.08
2009	51.23	43.74	7.49	14.62
2012	71.32	49.48	21.84	30.62

Spatial-temporal evolution of Guangzhou subway accessibility and its effects on the accessibility of public transportation services

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