地理科学 ›› 2013, Vol. 33 ›› Issue (6): 676-684.doi: 10.13249/j.cnki.sgs.2013.06.676

• • 上一篇    下一篇

大都市区建设用地空间扩展机理研究——以南京市区为例

陈江龙1(), 高金龙1,2, 魏也华3, 刘飞1   

  1. 1.中国科学院南京地理与湖泊研究所,江苏 南京 210008
    2.中国科学院大学,北京 100049
    3. 犹他大学地理系及公共与国际事务研究院,美国 盐湖城 84112-9155
  • 收稿日期:2012-09-10 修回日期:2013-02-19 出版日期:2013-08-20 发布日期:2013-08-20
  • 作者简介:

    作者简介:陈江龙(1974-),男,福建厦门人,副研究员,主要从事区域发展与土地利用研究。E-mail:Jlchen@niglas.ac.cn

  • 基金资助:
    国家自然科学基金资助项目(70873120、41130750)、中国科学院知识创新工程重要方向项目(KZCX2-YW-339)

Spatial Determinants of Urban Land Expansion in Large Chinese Cities: A Case Study of Nanjing City

Jiang-long CHEN1(), Jin-long GAO1,2, Hua Dennis WEI Ye3, Fei LIU1   

  1. 1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
    3. Department of Geography and IPIA, University of Utah, Utah 84112-9155, USA
  • Received:2012-09-10 Revised:2013-02-19 Online:2013-08-20 Published:2013-08-20

摘要:

大都市区建设用地微观空间扩展机理的研究是有效调控城市土地利用布局的科学基础。以南京市市区为例,以经济学的收益最大化理论为基础,构建研究建设用地扩展的成本——收益分析框架。以1 km×1 km为基本研究单元,利用遥感等数据研究1995~2001年、2001~2007年建设用地扩展的微观机理。研究表明,基期建设用地比重、到CBD、到开发区、到高速公路互通口的可达性、邻域建设用地主导单元的数量等收益要素以及耕地面积比重、水域面积比重、地质灾害区比重、坡度、重要生态功能区比重、城市规划建设用地区比重等成本要素是影响建设用地扩展的重要指标。两期比较分析表明,收益要素作用力大于成本要素,其更深层次的作用力则是全球化和市场化。空间政策对于建设用地扩展的约束作用越来越大。基于微观空间机理的研究提出了大都市区基本农田布局的政策建议。

关键词: 建设用地扩展, 空间误差模型, 南京市区

Abstract:

Research on the mechanisms of urban land expansion in metropolitan areas is of significant importance for effective regulation and control of urban land utilization and layout. Based on income maximization theory, this article develops an analytical framework to distinguish the cost- and benefit-related factors of urban land expansion. Cost-related factors of urban land expansion include the proportion of cultivated land and water area, elevation, slope, the proportion of geological-hazard-prone area and key ecological function area, and the proportion of planned construction area. While benefit-related factors include the proportion of construction land area in base year, the distance to central business district, sub-central business district, industrial centers, Entry/Exit points of expressway, railway station, international airport, main port and the nearest grid in which the proportion of construction land is 100%, and the number of neighboring grids in which construction land is the main land use type. Taking Nanjing, a large city located in the Changjiang River Delta of China, as an example, using remote sensing data in 1995, 2001 and 2007 at the scale of 1 km×1 km grid, this study examined the spatial determinants of urban land expansion over the periods of 1995-2001 and 2001-2007. The spatial error model is also applied to taking spatial autocorrelation into account. Results indicate that the benefit-related factors, such as the proportion of construction land area in base year in the grid, the number of neighboring grids in which construction land is the main land use type, the distances to central business district, industrial centers, Entry/Exit points of expressway and so on, and the cost-related factors, such as the proportions of cultivated land, water area, geological-hazard-prone area, key ecological function area, and planned construction area in the grid as well as the slope are the major spatial determinants of urban expansion in Nanjing City. Comparing the magnitudes of factors in two sub-periods, it is found that the benefit-related factors such as accessibility (the distances to central business district, industrial centers, etc) and agglomeration (the nearest grid in which the proportion of construction land is 100%) have greater impacts than the cost-related factors like physical conditions (elevation, slope, etc.) and policy constraints (key ecological function area and the proportion of planned construction area). We also highlight the importance of globalization and marketization as the crucial socio-economic drivers of urban land expansion in Nanjing. Spatial policies such as urban planning and ecological planning have become increasingly important in recent years for constraints of urban land expansion. The article also summarizes policy implications for the location choice of prime farmland in large Chinese cities.

Key words: urban land expansion, spatial error model, Nanjing proper

中图分类号: 

  • K902