SCIENTIA GEOGRAPHICA SINICA ›› 2021, Vol. 41 ›› Issue (5): 737-746.doi: 10.13249/j.cnki.sgs.2021.05.001

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Urban Spatial Expansion Mode Based on the Construction of Landscape Ecological Security Pattern: A Case of the Coastal Area of Jiangsu

Yang Qingke1(), Wang Lei2,*(), Li Yongle1, Qin Xianhong3   

  1. 1. School of Public Administration, Nanjing University of Finance & Economics, Nanjing 210023, Jiangsu, China
    2. Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, Jiangsu, China
    3. Public Administration School of Hohai University, Nanjing 211100, Jiangsu, China
  • Received:2020-03-08 Revised:2020-04-10 Online:2021-05-10 Published:2021-07-15
  • Contact: Wang Lei E-mail:yangqingke66@163.com;wanglei@niglas.ac.cn
  • Supported by:
    National Key R&D Program of China(2018YFD1100101);Jiangsu Natural Science Foundation(BK20170876);The Philosophical and Social Sciences Foundation of the Jiangsu Higher Education Institutions of China(2020SJA0276)

Abstract:

The importance of ecological security space has attracted more and more attention in the top-level design of urban spatial expansion in China. That’s very necessary to identify security issues and key ecological factors from regional scale, construct landscape ecological security pattern and analyze urban spatial expansion mode, which can provide policy reference for the upcoming territorial spatial planning. Taking the coastal areas of Jiangsu as an example, based on the theory of ‘process-pattern’ of landscape ecology, this article constructs four single ecological security patterns for the maintenance of basic ecosystem services such as landform, water conservation, biodiversity and recreational landscape. According to the ‘minimum-maximum constraint’ criterion, by overlapping mosaic operations, four different levels of comprehensive ecological security patterns are constructed, and the low security level zone that needs to be strictly protected, then the high security level that could be planned as a key development zone in future. Meanwhile, use MCR model, set up and compare the impact of different models on urban spatial expansion, such as ‘ecological security protection type’ ‘economic growth dominant type’ and ‘ecological and economic coordination type’. The results show that the coordinated model of ‘ecological protection and economic development’ can better balance the ‘ecological-social-economic’ benefits. This model can reasonably determine the space for urban construction and industrial development. It is the optimal model for the orderly and healthy development of cities and towns in the future, and also of great significance for optimizing the spatial layout of cities and towns and improving the comprehensive benefits of construction land development.

Key words: landscape ecological security patterns, urban space, expansion model, the coastal area of Jiangsu