Ecological Security Pattern Construction and Multi-Scenario Risk Early Warning (2020–2035) in the Guangdong–Hong Kong–Macao Greater Bay Area, China

Junjie Ma, Zhixiong Mei (), Xinyu Wang, Sichen Li and Jiangsen Liang
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Junjie Ma: School of Geography, South China Normal University, Guangzhou 510631, China
Zhixiong Mei: School of Geography, South China Normal University, Guangzhou 510631, China
Xinyu Wang: School of Geography, South China Normal University, Guangzhou 510631, China
Sichen Li: School of Geography, South China Normal University, Guangzhou 510631, China
Jiangsen Liang: School of Geography, South China Normal University, Guangzhou 510631, China

Land, 2024, vol. 13, issue 8, 1-21

Abstract: The effectiveness of ecological security patterns (ESPs) in maintaining regional ecological stability and promoting sustainable development is widely recognized. However, limited research has focused on the early warning of risks inherent in ESPs. In this study, the Guangdong–Hong Kong–Macao Greater Bay Area (GHKMGBA) is taken as the study area, and ecological security risk zones are delineated by combining the landscape ecological risk index and habitat quality, and a multi-level ESP is constructed based on the circuit theory. The PLUS model was employed to simulate future built-up land expansion under different scenarios, which were then extracted and overlaid with the multi-level ESP to enable the multi-scenario early warning of ESP risks. The results showed the following: The ESP in the central plains and coastal areas of the GHKMGBA exhibits a high level of ecological security risk, whereas the peripheral forested areas face less threat, which is crucial for regional ecological stability. The ESP, comprising ecological sources, corridors, and pinch points, is crucial for maintaining regional ecological flow stability, with tertiary corridors under significant stress and risk in all scenarios, requiring focused restoration and enhancement efforts. There are significant differences in risk early warning severity within the ESP across various development scenarios. Under the ecological protection scenario, the ESP will have the best early warning situation, effectively protecting ecological land and reducing ecological damage, providing a valuable reference for regional development policies. However, it must not overlook economic development and still needs to further seek a balance between economic growth and ecological protection.

Keywords: ecological security patterns; circuit theory; ecological security risk zone; early warning; PLUS model; Guangdong–Hong Kong–Macao Greater Bay Area (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2024
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