[1]ZHAI Peixiu,LI Feixue,QIU Xiaoqian,et al.Assessment on Spatial-temporal Evolution of Landscape Ecological Risk in the Yangtze River Delta[J].Research of Soil and Water Conservation,2023,30(04):245-255.[doi:10.13869/j.cnki.rswc.2023.04.019.]
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Assessment on Spatial-temporal Evolution of Landscape Ecological Risk in the Yangtze River Delta
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 04
Page number:
245-255
Column:
Public date:
2023-06-10
- Title:
- Assessment on Spatial-temporal Evolution of Landscape Ecological Risk in the Yangtze River Delta
- Keywords:
- landscape ecological risk assessment; adaptive cycle theory; ecosystem service; Yangtze River Delta
- CLC:
- X171.1; X826
- DOI:
- 10.13869/j.cnki.rswc.2023.04.019.
- Abstract:
- [Objective] This study aims to reveal the occurrence mechanism of landscape ecological risk(LER), improve the ecological risk assessment framework(ERAF)to evaluate various LERs in the Yangtze River Delta(YRD)region, so as to provide a reference for ecological risk management and ecological civilization construction in the YRD region. [Methods] This study took ecosystem services as the evaluation endpoint and constructed a probability of ecological damage index system based on the three-dimensional perspective of ‘potential-connectivity-resilience' of the adaptive cycle theory, and comprehensively assessed the LER of the YRD region in 2000, 2010 and 2020 in terms of ecosystem services and probability of ecological damage. [Results](1)The overall ecosystem service capacity of the YRD region showed an increasing trend and a spatial pattern of high in the south and low in the north.(2)The probability of ecological damage showed a spatial characteristic of low in the south and high in the north, low in the west and high in the east, and the temporal change was characterized by expansion and then contraction around the built-up urban areas.(3)The LER of the YRD region was generally low, with a large proportion of medium and low-risk areas, and high-risk areas concentrated around the cities, and LER gradually increased in some rapidly developing cities.(4)From the adaptive cycle stage, some areas in the YRD region had started to change from fast development to stable and sustainable development, with fewer areas in the development stage and more areas in the release stage. [Conclusion] The adaptive cycle theory can clarify the relationship among ecological function, landscape pattern and dynamic process and its influence on LER. It can be integrated well into the ERAF and improve effectiveness and accuracy of LER accessment.
- References:
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Last Update:
2023-06-10