跨江城市建设空间生长过程及动力机制
吴巍(1986—),男,江西高安人,博士,副教授。主要研究方向为城市发展与土地利用规划。E-mail:wuwei@jxnu.edu.cn。 |
收稿日期: 2020-01-08
修回日期: 2020-07-29
网络出版日期: 2025-04-22
基金资助
江西省高校人文社会科学研究项目(GL17238)
江西省教育厅科学技术研究项目(GJJ150315)
Growth Process of River-Crossing Construction Space and Its Dynamic Mechanism:A Case Study of Nanchang
Received date: 2020-01-08
Revised date: 2020-07-29
Online published: 2025-04-22
吴巍 , 陈敏 , 赵晓杰 , 张福梅 , 钟业喜 . 跨江城市建设空间生长过程及动力机制[J]. 经济地理, 2020 , 40(11) : 77 -85 . DOI: 10.15957/j.cnki.jjdl.2020.11.009
Cross-river development is an effective measure to expand the development space and optimize the layout of city. Taking Nanchang City as an example,this paper selects four remote sensing images in 1990,2000,2010 and 2017,studies the spatial growth process and dynamic mechanism of its construction by using GIS spatial analysis and other methods,and explores the characteristics and laws of the spatial evolution of the construction under the implementation of the urban cross-river strategy. The results show that: 1) Since the 1990s,the urban construction space growth in the study area has generally experienced the low-speed growth stage (1990-2000),the accelerated growth stage (2000-2010) and the stable growth stage (2010-2017) which respectively correspond to the initial stage,the growth stage and the mature stage of the urban cross-river development. 2) The spatial growth pattern of the study area can be divided into three types: filling type,extension type and enclave type. The growth pattern is different in different stages,among which the proportion of three types in the low-speed growth stage is not different,the extended growth is dominant in the accelerated growth stage,and the filling expansion is dominant in the stable growth stage. 3) The main influencing factors corresponding to different stages of urban construction space growth are also different. The low-speed growth stage is mainly restricted by the natural environment along the riverside,the degree of economic development and the cross-river traffic facilities. The urban cross-river development is slow and the two sides are relatively independent. The accelerated growth stage is driven by the endogenous push that is population growth and rapid economic development,and the external pulling force that is the development willingness of local governments and the continuous improvement of cross-river traffic facilities,which jointly drive the growth of urban space and accelerate the cross-river development of the city. In the stable growth stage,the promotion of traffic engineering technology driven by scientific and technological progress and the transformation of industrial structure driven by the market are the main driving factors to promote the growth of urban construction space in the research area. In this stage,BinJiang New Area gradually develops into a new urban center and consolidates the pattern of "one river and two areas".
表1 研究区建设用地扩展速率特征Tab.1 Expansion rate characteristic of construction land in research area |
时段(年) | 1990—2000 | 2000—2010 | 2010—2017 |
---|---|---|---|
斑块面积(km2) | 77.95 | 179.60 | 228.78 |
扩展面积(km2) | 28.45 | 101.65 | 49.18 |
扩展速度(km2/a) | 2.85 | 10.17 | 7.03 |
滨江新区扩展速度(km2/a) | 1.03 | 6.23 | 7.56 |
研究区扩展类型 | 低速扩展 | 加速扩展 | 稳定扩展 |
表2 南昌市城市空间扩展形态相关参数Tab.2 Related morphological parameters of urban space expansion in Nanchang City |
年份 | 1990 | 2000 | 2010 | 2017 |
---|---|---|---|---|
紧凑度 | 0.77 | 0.49 | 0.46 | 0.84 |
分形维数 | 1.03 | 1.13 | 1.13 | 1.01 |
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