中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2020, Vol. 39 ›› Issue (06): 108-116.DOI: 10.3969/j.issn.1674-0696.2020.06.17

• 港口航道·水利水电·资源环境 • 上一篇    下一篇

长江经济带不同尺度城市规模扩张特征及空间差异研究

官冬杰,和秀娟,陈林   

  1. (重庆交通大学 建筑与城市规划学院,重庆 400074)
  • 收稿日期:2019-03-18 修回日期:2019-09-25 出版日期:2020-06-26 发布日期:2020-06-29
  • 作者简介:官冬杰(1980—), 女,黑龙江富锦人,教授,博士,主要从事生态环境与可持续发展方面的研究。E-mail: guandongjie_2000@163.com。 通信作者:和秀娟(1995—),女,云南丽江人,硕士研究生,主要从事3S技术与应用方面的研究。E-mail:2359755879@qq.com。
  • 基金资助:
    教育部人文社科一般项目(20YJA790016);重庆市教委重点项目(KJZD-K201800702);重庆市基础科学与前沿技术研究项目(cstc2017jcyjAX0210)

Characteristics and Spatial Difference of Urban Scale Expansion in Different Scales in the Yangtze River Economic Belt

GUAN Dongjie,HE Xiujuan,CHEN Lin   

  1. (College of Architecture and Urban Planning, Chongqing Jiaotong University, Chongqing 400074, China)
  • Received:2019-03-18 Revised:2019-09-25 Online:2020-06-26 Published:2020-06-29

摘要: 以长江经济带1992—2012年的夜间灯光遥感数据为基础,通过计算帕累托系数和城市扩张指数,分析长江经济带的城市位序—规模演变规律和城市空间扩张的差异。结果表明:在1992—2012年期间,长江经济带城市规模分布的帕累托系数从0.55上升至0.77,年平均变化为0.011。在城市群尺度上,成渝城市群的帕累托系数增加了0.340,长三角城市群的帕累托系数增加了0.320,而长江中游城市群的帕累托系数增量相对较小,为0.270。以特大、大、中和小城市为区分,进一步分析城市群内部1992—2012年特大、大、中城市的位序变化,三大城市群内,特大城市的帕累托系数相对稳定,大城市和中等城市的帕累托系数随时间轴的波动幅度逐渐减小。1992—2012年间,长江经济带城市扩张剧烈的城市主要是分布在长江中下游,如上海、杭州、武汉等,而长江上游的城市扩张多为缓变型和稳定型。总体而言,长江经济带特大城市的位序最稳定,但是特大城市的数量较少,说明大城市的晋级速度缓慢,特别是在西部地区和中部地区。到了2012年,长江经济带东部地区已进入都市连绵化阶段,而内陆城市群还处于中心城市主导的发展阶段,武汉、重庆和成都作为特大城市主导内陆城市群的发展,但中心城市的辐射能力有限,使长江经济带的城市体系结构欠合理。

关键词: 环境工程, 长江经济带, 夜间灯光数据, 城市群, 城市规模分布, 城市扩张指数

Abstract: Based on the remote sensing data of nighttime lights in the Yangtze River Economic Belt (YREB) from 1992 to 2012, the law of urban rank scale evolution and the difference of urban spatial expansion in the YREB were analyzed by the Pareto coefficients and the urban expansion index. The results show that: during the year from 1992 to 2012, the Pareto coefficients in the YREB have increased from 0.55 to 0.77, with an average annual change of 0.011. On the urban agglomeration scale, the Pareto coefficients have increased by 0.340, 0.320, and 0.270 in the Cheng-Yu urban agglomeration (CY), Yangtze River Delta urban agglomeration (YRD) and Central Yangtze River urban agglomeration (CYR). Based on the distinction of mega, large, medium and small cities, the rank change of mega, large and medium cities in the urban agglomerations from 1992 to 2012 was further analyzed. In the three urban agglomerations, the Pareto coefficients of mega cities were relatively stable, and the fluctuation range of Pareto coefficients of big and medium cities decreased gradually with the time axis. From 1992 to 2012, the cities in the YREB with intense urban expansion were mainly distributed in the middle and lower reaches of the Yangtze River, such as Shanghai, Hangzhou, Wuhan, while the urban expansion in the upper reaches of the Yangtze River was mostly slow and stable. On the whole, the order of megacities in the YREB was the most stable, but the number of megacities was small, which showed that the promotion speed of megacities was slow, especially in the western and central regions. By 2012, the eastern part of the YREB has entered the stage of urban continuum, while the inland urban agglomeration has still been in the stage of development dominated by the central city. Wuhan, Chongqing and Chengdu, as megacities, dominate the development of inland urban agglomerations, but the radiation capacity of the central cities is limited, which makes the urban system structure of the YREB unreasonable.

Key words: environemental engineering, YREB, nighttime light data, urban agglomeration, city-size distribution, urban expansion index

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