Ecological security assessment based on the renewable ecological footprint in the Guangdong-Hong Kong-Macao Greater Bay Area, China
Ecological security assessment based on the renewable ecological footprint in the Guangdong-Hong Kong-Macao Greater Bay Area, China
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DOI：
10.1016/j.ecolind.2020.106432
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发表时间：
2020-09
影响因子：
6.9
通讯作者：
Mingli Bi;G. Xie;Cuiyou Yao
中科院分区：
文献类型：
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作者：
Mingli Bi;G. Xie;Cuiyou Yao
生态足迹是区域生态安全评价的重要工具。基于满足人类基本生物量需求的可再生生态足迹组成，从生态健康和生态风险两个方面对粤港澳大湾区2000年和2015年的生态安全状况进行了评价。结果如下。(1)可再生生物容量和可再生EF有所增加。城乡之间可更新的生态足迹结构的差异几乎消失。生态消费主要集中在人流、物流、旅游流量大的城市。(2)每公顷的可再生生物容量很高，而且还在增加。有效带菌率各城市差异很大，总体呈下降趋势。大湾区的健康水平已经从健康变成不健康。(3)可再生生态赤字和可再生生态压力加大，生态风险进一步扩大。高风险级别以上城市数量的增加，意味着生态风险管理的热点目标更多。(4)大湾区生态安全状况由相对不安全、弱不可持续向不安全、强不可持续转变。保护自然资产，减少生态消耗，提高研究区的生态安全和可持续性。
The ecological footprint (EF) is an important tool for regional ecological security assessments. Based on the renewable EF components that meet the basic biomass needs of mankind, we evaluated the ecological security status of the Guangdong-Hong Kong-Macao Greater Bay Area (Great Bay Area) in 2000 and 2015 from two aspects: ecological health and ecological risk. The results were as follows. (1) The renewable biocapacity and the renewable EF have increased. The difference in the renewable EF structure between the urban and rural areas has nearly disappeared. Ecological consumption was concentrated in cities with a high flow of people, materials, and tourism. (2) The renewable biocapacity per hectare was high and increasing. The effective carrying rate varied greatly from city to city and was generally declining. The level of health in the Greater Bay Area has changed from healthy to unhealthy. (3) The renewable ecological deficit and the renewable ecological pressure have increased, and the ecological risks are further expanding. The increase in the number of cities above the high-risk level means more hotspot targets for ecological risk management. (4) The ecological security status of the Greater Bay Area has changed from relatively unsafe and weakly unsustainable to unsafe and strongly unsustainable. There is a need to protect natural assets, reduce ecological consumption, and improve the ecological security and sustainability of the study area.