地理科学 ›› 2019, Vol. 39 ›› Issue (10): 1561-1569.doi: 10.13249/j.cnki.sgs.2019.10.005
熊鹰1,2, 徐亚丹2, 孙维筠2, 尹建军1, 侯珂伦2
收稿日期:
2018-12-31
修回日期:
2019-03-23
出版日期:
2019-10-10
发布日期:
2019-10-10
作者简介:
熊鹰(1977-),男,湖南汉寿人,博士,教授,主要从事城市发展与区域规划研究。E-mail:csustxy@126.com
基金资助:
Xiong Ying1,2, Xu Yadan2, Sun Weijun2, Yin Jianjun1, Hou Kelun2
Received:
2018-12-31
Revised:
2019-03-23
Online:
2019-10-10
Published:
2019-10-10
Supported by:
摘要:
从城市群规模效益、距离效益和空间联系效益3个方面出发,运用ArcGIS和城市相互作用强度模型对长株潭城市群和环洞庭湖城市群空间结构效益进行评价比较分析。结果表明:环洞庭湖城市群在外在规模上具有相对优势,具体表现为人口规模、空间规模以及城市数量较大,但城市群的紧凑度不高,城市规模等级结构优势不够明显,空间可达性较差,重要城市之间的空间联系不够紧密,呈现“大而散”的特征;相对而言,长株潭城市群城市数量、人口规模及用地较小,但其紧凑度及规模效益较高,城市规模等级结构优势度相对较高,可达性较好,重要城市之间的空间联系较为紧密。在此基础上,以实现城市群空间结构效益最大化为目标,构建了以长沙为中心城市的“一心两圈三轴”结构体系。
中图分类号:
熊鹰, 徐亚丹, 孙维筠, 尹建军, 侯珂伦. 城市群空间结构效益评价与优化研究——以长株潭城市群与环洞庭湖城市群为例[J]. 地理科学, 2019, 39(10): 1561-1569.
Xiong Ying, Xu Yadan, Sun Weijun, Yin Jianjun, Hou Kelun. Comparison and Optimization of the Spatial Structure Benefits of Urban Agglomeration: A Case Study of Changsha-Zhuzhou-Xiangtan Urban Agglomeration and Dongting Lake Urban Agglomeration[J]. SCIENTIA GEOGRAPHICA SINICA, 2019, 39(10): 1561-1569.
表1
长株潭城市群与环洞庭湖城市群规模效益比较"
指 标 | 长株潭 城市群 | 环洞庭湖 城市群 |
---|---|---|
人口数量(万人) | 1425.6 | 1588.33 |
土地面积(km2) | 28096 | 46088 |
城市数量(座) | 14 | 20 |
人口密度(人/km2) | 507.4 | 344.63 |
城市密度(座/km2) | 4.98 | 4.56 |
经济密度(万元/km2) | 4466.24 | 1507.92 |
公路密度(km/万km2) | 13420.42 | 12732.82 |
人均GDP(元) | 88021.45 | 43754.76 |
非农业户口人数占总人口的比重(%) | 72.01 | 50.60 |
中心城市首位度 | 3.04 | 1.23 |
100万以上人口的城市数量 | 2 | 2 |
50~100万人口城市数量比例(%) | 35.7 | 5 |
20~50万人口城市数量比例(%) | 35.7 | 70 |
20万人口以下城市数量比例(%) | 21.4 | 15 |
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