Self-Organizing Feature Zoning and Multiple Hotspots Identification of Ecosystem Services: How to Promote Ecological Refined Management of Chengdu-Chongqing Urban Agglomeration
Publication: Journal of Urban Planning and Development
Volume 149, Issue 1
Abstract
Reasonable ecological function zoning is conducive to balancing ecological security and social development. Previous studies of evaluation for urban ecosystem services (ESs) have great progress. However, there is a lack of integrating ES stable hotspots into urban planning and refined management. In this research, we are interested in how hotspot identification can help promote ecological refined management. To achieve this, Chengdu-Chongqing urban agglomeration (CY) was chosen as a case study. First, we employed coefficient of variation and linear regression to analyze ESs temporal and spatial evolution trend from 2000 to 2017. Then, the stable ES hotspots were identified in the time dimension, and the results were superimposed on the dominant function zoning map obtained by a self-organizing feature map (SOFM). Finally, the refined zoning results were obtained, and we added corresponding control measures and policy guidance. The results showed the following: (1) from 2000 to 2017, water conservation (WR) and biodiversity conservation (Sbio) in the study area fluctuated greatly and showed a significant improvement trend on the whole; soil erosion protection (Spro), carbon sequestration and oxygen production (CSOP) showed a degradation trend in a few areas; (2) the area with at least one kind of ES stable hotspot accounted for 35.22% in the study area, and only 0.8% covered the four kinds of ES hotspots; and (3) the two-level zoning system of CY-refined management was designed. Eighteen cells have been designed within five main functional zones: urban agglomeration zone, modern agricultural development zone, ecological farming zone, ecological transition zone, and core ecological protection zone. Overall, the research based on natural ecological zoning management can provide a decision-making basis for urban planning, policy making, and sustainable development.
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Acknowledgments
This research was supported by the National Social Science Foundation of China (No. 19XJY003), the National Park Research Center Project, China (No. GJGY2020-ZD002), and the Landscape and Recreation Research Center Key Project of Sichuan, China (No. JGYQ2019012). The authors thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript. We sincerely thank the editor and anonymous reviewers for their valuable comments.
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Published In
Journal of Urban Planning and Development
Volume 149 • Issue 1 • March 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Sep 30, 2021
Accepted: Aug 18, 2022
Published online: Oct 31, 2022
Published in print: Mar 1, 2023
Discussion open until: Mar 31, 2023
ASCE Technical Topics:
- Case studies
- Ecosystems
- Engineering fundamentals
- Environmental engineering
- Geomatics
- Infrastructure
- Mapping
- Methodology (by type)
- Research methods (by type)
- Surveying methods
- Systems engineering
- Systems management
- Urban and regional development
- Urban areas
- Water and water resources
- Water conservation
- Water management
- Water policy
- Zoning
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