Acta Geographica Sinica ›› 2018, Vol. 73 ›› Issue (12): 2315-2328.doi: 10.11821/dlxb201812004

• Urban and Regional Development • Previous Articles     Next Articles

Evaluation of urban resilience of Dalian city based on the perspective of "Size-Density-Morphology"

XIU Chunliang1(),WEI Ye2,WANG Qi3   

  1. 1. Jangho Architecture College, Northeastern University, Shenyang 110169, China
    2. School of Geographical Sciences, Northeast Normal University, Changchun 130024, China
    3. School of Management, Changchun University, Changchun 130022 , China
  • Received:2018-03-22 Online:2018-12-14 Published:2018-12-14
  • Supported by:
    National Natural Science Foundation of China, No.41471141

Abstract:

Aiming at building a safe city, this study proposed a “Size-Density-Morphology” based three-dimensional urban resilience evaluation framework according to the theories and methods of geography and landscape ecology. By using the framework, the urban resilience of each county in Dalian city during 2000-2016 was evaluated. There are three kinds of urban resilience, namely size resilience, density resilience and morphology resilience. The size resilience could be measured by ecological infrastructure tools; the density resilience could be measured by ecological footprint and ecological carrying capacity; the morphology resilience could be measured by "Source-sink" landscape average distance index. In addition, this paper also analyzed the combining forms of the three types of resilience. This study demonstrates that the three-dimension evaluation framework has a unique capacity to identify the resilience characteristics of city, and it is a key bond which creates the connection of urban planning and urban resilience research. Findings are as follows: (1) The size safety is the primary constraint condition for urban spatial expansion. (2) Ecological carrying capacity is the safe threshold for urban density. (3) The spatial coupling of source and sink landscape is a basic feature of good urban morphology. (4) It is the combination of size-density-morphology resilience to determine the safety of the city rather than each single one. According to the analysis of combination characteristics of the "Size-Density-Morphology" resilience, four suggestions were put forward for the development of Dalian city in future. (1) Strictly limit the development intensity of central urban area and Jinzhou district to curb the urban sprawl trend; (2) Strictly control the development of the coastal zone and maintain the integrity of natural mountain and green vegetation patches; (3) Promote the balanced development on a whole city scale to improve the city's overall resilience; (4) Optimizing the development strategy of new urban area in order to form a good urban morphology.

Key words: urban size, urban density, urban morphology, urban resilience, safe development, Dalian city