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[1]ZHANG Hailing,YE Changsheng,HU Mengshan.Identification and Restoration Strategy of Key Areas of Ecological Restoration in Urban Agglomeration Around Poyang Lake Based on Ecological Security Pattern[J].Research of Soil and Water Conservation,2023,30(02):393-402.[doi:10.13869/j.cnki.rswc.2023.02.012]

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Identification and Restoration Strategy of Key Areas of Ecological Restoration in Urban Agglomeration Around Poyang Lake Based on Ecological Security Pattern

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 02 Page number: 393-402 Column: Public date: 2023-03-10

Title:: Identification and Restoration Strategy of Key Areas of Ecological Restoration in Urban Agglomeration Around Poyang Lake Based on Ecological Security Pattern

Author(s):: ZHANG Hailing, YE Changsheng, HU Mengshan; (East China University of Technology, College of Earth Sciences, Nanchang 330013, China)

Keywords:: ecological security pattern; ecological restoration; minimum cumulative resistance model; circuit theory

CLC:: X171.4

DOI:: 10.13869/j.cnki.rswc.2023.02.012

Abstract:: In order to maintain the overall balance of the ecosystem and realize the sustainable development of the damaged ecosystem, the urban agglomeration around Poyang Lake was taken as an example, the ecological source area was determined by evaluating the importance of ecological services and ecological sensitivity, the ecological corridor was extracted by using the minimum cumulative resistance model and circuit theory, and the ecological security pattern was constructed based on the ‘point-line-network' model. The key areas of ecological restoration in urban agglomeration around Poyang Lake were determined by identifying ecological ‘pinch points' and ecological obstacle points in the network. The results show that:(1)the ecological source area of Poyang Lake urban agglomeration covered a total area of 1.24×10⁴km², mainly distributed in Jiuling Mountain area in the west, Wuyi Mountain area in the southeast and Huaiyu Mountain area in the northeast; the land type was mainly woodland; there were 364 ecological corridors with a total length of 7 640.24 km, showing the spatial characteristics of sparse in the middle and dense around;(2)based on the ecological security pattern, the key areas for ecological protection and restoration of urban agglomeration around Poyang Lake were identified as follows: 31 ecological ‘pinch point' areas, 23 ecological obstacle point areas, with a broken space area of 6 053.39 km². To sum up, the distribution of source sites and corridors is characterized by dense eastern and western parts and sparseness in the middle. The ‘pinch points' and obstacle points identified by the ecological security pattern and circuit theory are more in line with the real patterns of species movement. It can be seen that the pattern construction can effectively identify key areas for ecological restoration.

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Last Update: 2023-03-10