世界地理研究 ›› 2022, Vol. 31 ›› Issue (3): 561-571.DOI: 10.3969/j.issn.1004-9479.2022.03.2020538
收稿日期:
2020-08-12
修回日期:
2020-12-08
出版日期:
2022-05-15
发布日期:
2022-05-17
通讯作者:
孙继平
作者简介:
侯兰功(1979-),男,副教授,博士,研究方向为区域发展与规划研究,E-mail:soundskyhlg@163.com。
基金资助:
Received:
2020-08-12
Revised:
2020-12-08
Online:
2022-05-15
Published:
2022-05-17
Contact:
Jiping SUN
摘要:
城市网络结构韧性是影响区域可持续发展的关键因素之一。分析城市网络结构韧性,找到结构薄弱环节,调整网络结构和优化区域资源配置,对促使区域稳定协调发展具有重要意义。以成渝城市群为研究对象,基于2014年与2018年的公路、铁路客运班次数据和百度指数大数据分别构建交通和信息联系网络,运用复杂网络理论借助Ucinet网络分析工具从网络整体完备度、网络结构特征、网络聚集性3个方面,网络密度、平均路径长度、度分布曲线斜率、“核心-边缘”结构拟合度、局部聚类系数和平均聚类系数6个指标对城市群网络韧性演变进行分析。结果表明:在研究时段内,交通联系网络的初始韧性弱于信息联系网络,后期韧性能力有所提高并强于信息联系网络,网络结构由松散、单极的弱连接状态演化为联系紧密、均衡复杂的稳定状态;信息联系网络的韧性能力相对于2014年大幅减弱,网络完备度下降,核心区域封闭性加剧,信息流传输路径单一,网络联系分布不均衡,网络结构抗干扰性弱;成渝城市群网络整体仍处于发展阶段,网络化程度较弱,韧性能力不足。最后对成渝城市群网络韧性现状进行了讨论,进而提出优化建议。
侯兰功, 孙继平. 复杂网络视角下的成渝城市群网络结构韧性演变[J]. 世界地理研究, 2022, 31(3): 561-571.
Langong HOU, Jiping SUN. Evaluation of network structure resilience of Chengdu-Chongqing urban agglomeration from the perspective of complex networks[J]. World Regional Studies, 2022, 31(3): 561-571.
图 3 成渝城市群交通网络拓扑结构(a)和信息网络拓扑结构(b)
Fig. 3 The topological structure of the transportation network (a) and information network (b) of Chengyu urban agglomeration
指标 | 年份 | 网络密度D | 平均路径长度L | 度分布曲线斜率a | 核心-边缘结构拟合度 | 平均聚类系数C |
---|---|---|---|---|---|---|
交通联系网络 | 2014 | 0.279 | 1.632 | -1.9221 | 0.573 | 0.719 |
2018 | 0.333 | 1.700 | -1.491 | 0.543 | 0.755 | |
信息联系网络 | 2014 | 0.321 | 1.642 | -1.8071 | 0.832 | 0.837 |
2018 | 0.300 | 1.700 | -1.6340 | 0.896 | 0.869 |
表 1 城市网络结构韧性指标
Tab.1 Urban network structural resilience indicators
指标 | 年份 | 网络密度D | 平均路径长度L | 度分布曲线斜率a | 核心-边缘结构拟合度 | 平均聚类系数C |
---|---|---|---|---|---|---|
交通联系网络 | 2014 | 0.279 | 1.632 | -1.9221 | 0.573 | 0.719 |
2018 | 0.333 | 1.700 | -1.491 | 0.543 | 0.755 | |
信息联系网络 | 2014 | 0.321 | 1.642 | -1.8071 | 0.832 | 0.837 |
2018 | 0.300 | 1.700 | -1.6340 | 0.896 | 0.869 |
变量 | 年份 | 成都 | 重庆 | 德阳 | 眉山 | 雅安 | 资阳 | 内江 | 南充 |
---|---|---|---|---|---|---|---|---|---|
交通 | 2014 | 0.263 | 0.833 | 1.000 | 0.750 | - | 0.567 | 0.917 | 0.833 |
2018 | 0.200 | 0.253 | 0.750 | 0.667 | - | 1.000 | 1.000 | 0.750 | |
信息 | 2014 | 0.267 | 0.267 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 0.667 |
2018 | 0.200 | 0.200 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |
变量 | 年份 | 达州 | 宜宾 | 广安 | 自贡 | 泸州 | 遂宁 | 乐山 | 绵阳 |
交通 | 2014 | 0.667 | 0.700 | 0.667 | 0.917 | - | 0.482 | 0.467 | 1.000 |
2018 | 1.000 | 0.700 | 0.833 | 0.750 | 1.000 | 0.917 | 0.750 | 0.750 | |
信息 | 2014 | 0.800 | 0.800 | 1.000 | 0.900 | 0.900 | 1.000 | 1.000 | 0.800 |
2018 | 1.000 | 0.833 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 0.667 |
表 2 成渝城市群城市局部聚类系数统计
Tab.2 Statistics of local clustering coefficients of Chengyu urban agglomeration
变量 | 年份 | 成都 | 重庆 | 德阳 | 眉山 | 雅安 | 资阳 | 内江 | 南充 |
---|---|---|---|---|---|---|---|---|---|
交通 | 2014 | 0.263 | 0.833 | 1.000 | 0.750 | - | 0.567 | 0.917 | 0.833 |
2018 | 0.200 | 0.253 | 0.750 | 0.667 | - | 1.000 | 1.000 | 0.750 | |
信息 | 2014 | 0.267 | 0.267 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 0.667 |
2018 | 0.200 | 0.200 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | |
变量 | 年份 | 达州 | 宜宾 | 广安 | 自贡 | 泸州 | 遂宁 | 乐山 | 绵阳 |
交通 | 2014 | 0.667 | 0.700 | 0.667 | 0.917 | - | 0.482 | 0.467 | 1.000 |
2018 | 1.000 | 0.700 | 0.833 | 0.750 | 1.000 | 0.917 | 0.750 | 0.750 | |
信息 | 2014 | 0.800 | 0.800 | 1.000 | 0.900 | 0.900 | 1.000 | 1.000 | 0.800 |
2018 | 1.000 | 0.833 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 0.667 |
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