JOURNAL OF NATURAL RESOURCES ›› 2018, Vol. 33 ›› Issue (1): 14-26.doi: 10.11849/zrzyxb.20161330

Previous Articles     Next Articles

Urban Growth Boundary Delimitation Method Integrating Comprehensive Ecological Security Pattern and Urban Expansion Simulation—A Case Study of Planning Areas in Tianshui City (2015-2030)

CONG Dian-min1, 2, ZHAO Shu-he1, 2, YU Tao3, CHEN Cheng4, WANG Xiao-biao1, 2   

  1. 1. Department of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China;
    2. Jiangsu Key Laboratory of Geographic Information Science and Technology, Nanjing 210023, China;
    3. School of Architecture and Urban Planning, Nanjing University, Nanjing 210093, China;
    4. Nanjing Hydraulic Research Institute, Nanjing 210029, China
  • Received:2016-12-02 Revised:2017-03-13 Online:2018-01-20 Published:2018-01-20
  • Supported by:
    National Natural Science Foundation of China, No. 41101142; National Social Science Foundation of China, No. 09CJL046.

Abstract: Traditional methods for urban growth boundary delimitation generally consider the construction of ecological security patterns or the simulation of urban expansion. The former methods ignore the expansion of the city and are of less objectivity while the later methods only take the urban expansion into consideration and ignore the ecological security issues. To solve the above problem, the paper proposes a new method for delimitating urban growth boundary by integrating the comprehensive ecological security pattern and the simulation of urban expansion. Four kinds of factors are selected to build the comprehensive ecological security pattern and are used to modify the rigid urban growth boundary based on the designated no-construction areas. Then, the city expansion boundary is obtained through the simulation of the city expansion with suitable internal driving factors and CA_Markov model. The urban growth boundary of Tianshui City is delaminated by the method integrating the comprehensive ecological security pattern and the simulation of urban expansion. The final delimitation of urban growth area is 370.56 km2 in total, accounting for 7.7% of the whole planning area. Currently, the built-up area is 140.64 km2 and the area remained to be built is 154.05 km2. This method solves the contradiction between city growth and ecological protection effectively, which is of great importance for the growth boundary delimitation of the valley cities with land shortage and fragile ecological environment.

Key words: CA_Markov model, comprehensive ecological security pattern, simulation of urban expansion, the rigid urban growth boundary, urban growth boundary

CLC Number: 

  • TU984