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Constructing a resilient ecological network by considering source stability in the largest Chinese urban
Zhouyangfan Lu1, Wei Li1, Siyang Zhou1
1State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Haidian District, Beijing, 100875, China.
Journal of Environmental Management
|December 12, 2022
Summary
Understanding dynamic stability (DS) of ecological sources is key to building resilient ecological networks (ENs). This study introduces DS to identify critical sources for enhanced EN resilience, especially in urban areas.
Area of Science:
- Ecology
- Environmental Science
- Network Theory
Background:
- Ecological networks (ENs) are crucial for ecosystem functioning and resilience.
- Limited understanding exists on integrating spatiotemporal source dynamics into EN resilience strategies.
- Source loss significantly impacts EN resilience, necessitating better identification methods.
Purpose of the Study:
- To introduce and apply the concept of dynamic stability (DS) for improved ecological source identification.
- To construct a resilient EN by considering both ecosystem services (ESs) and DSs of sources.
- To assess the resilience of the constructed EN using topological analysis and attack tests.
Main Methods:
- Developed the dynamic stability (DS) concept to assess spatiotemporal changes in ecological sources.
- Identified and graded sources based on DS levels across multiple years (2000, 2010, 2018).
- Constructed a three-tier EN incorporating ESs and DSs, followed by network topology and resilience analysis.
Main Results:
- Identified a varying number of preliminary sources (49, 54, 68) and extracted critical sources with high, moderate, and low DS.
- The constructed EN exhibited scale-free and small-world properties.
- Resilience analysis revealed critical nodes with high/moderate DS, protected by conservation policies.
Conclusions:
- Dynamic stability (DS) offers a novel approach for precise identification and protection of critical ecological sources.
- This method enhances the resilience of ecological networks (ENs) in rapidly changing environments, particularly in urbanized regions.
- Integrating DS into EN construction is vital for effective ecological conservation and management strategies.
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