[1]XIE Jing,LI Wen,JIA Jia,et al.Construction and Optimization of Ecological Network in the Main Urban Area of Qiqihar City[J].Research of Soil and Water Conservation,2021,28(06):308-315.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 06
Page number:
308-315
Column:
Public date:
2021-10-10
- Title:
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Construction and Optimization of Ecological Network in the Main Urban Area of Qiqihar City
- Author(s):
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XIE Jing,LI Wen,JIA Jia,ZHAO Hengsong
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(College of Landscape Architecture,Northeast Forestry University,Harbin 150040,China)
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- Keywords:
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landscape ecology; ecological network; morphological spatial pattern analysis; minimum cumulative resistance model; Qiqihar City
- CLC:
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X171.1
- DOI:
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- Abstract:
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The main urban area of Qiqihar City is an important node of the Harbin-Daqing-Qiqihar Industrial Corridor. In recent years,industrialization has led to the fragmentation of ecological patches and the decline of ecological benefits. Building an ecological network is currently an important technical means to restore the regional ecological environment and integrate land resources. Based on ArcGIS and other technologies,the regional land use changes were analyzed and studied,and potential ecological problems were obtained,which could provide the basis for subsequent ecological network construction. Based on the principles of landscape ecology and morphological spatial pattern analysis,this research identified and evaluated the core areas,bridged areas and island patches of the study area,and extracted important ecological sources according to the dPC index. This research laid out potential ecological corridors based on the minimum cumulative resistance model. Through calculations,areas with weak connectivity were planned and supplemented,and the buffer zone and ecological breakpoints of the network system were summarized and analyzed. A total of 16 core areas in Qiqihar City are the original ecological sources. The study area has 14 important ecological corridors and 106 general ecological corridors which mainly distribute in the southeast of the study area. The optimized ecological network adds 7 ecological sources and 133 planned ecological corridors. The related indexes of corridor network structure have been greatly improved. This research proposes ecological protection suggestions based on the analysis of the buffer zone of the network system,and proposes measures to restore connectivity based on 352 ecological breakpoints. This research forms a complete regional ecological network system by identifying ecological sources,constructing and optimizing ecological corridors,which aims to provide reference and method reference for site selection for the construction of ecological network in Qiqihar City.