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Expanding China's protected areas network to enhance resilience of climate connectivity

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Expanding the network of connected and resilient protected areas(PAs)for climate change adaptation can help species track suitable climate conditions and safeguard biodiversity.This is often overlooked when expanding PAs and quantifying their benefits,resulting in an underestimate of the benefits of expanding PAs.We expanded PAs through terrestrial mammalian species distribution hotspots,Key Biodiversity Areas(KBAs),and wilderness areas.Then,we constructed climate connectivity networks using a resistance-based approach and further quantified the network resilience to propose resilient cli-mate response strategies in China.The results showed that existing PAs suffered from location biases with important biodiversity areas.The existing PAs represented about half of the KBAs and wilderness areas,yet only 12.08％of terrestrial mammalian species distribution hotspots were located within exist-ing PAs.Compared with the existing PA network,the network efficiency and resilience of the expanded PAs'climate connectivity increased to 1.80 times and 1.78 times,respectively.With 56％of the nodes remaining,the network efficiency of the expanded PAs was equivalent to that of the existing PAs with all nodes.The network resilience of preferentially protecting and restoring low human footprint patches was approximately 1.5-2 times that of the random scenario.These findings highlighted that confronted with the unoptimistic situation of global warming,nature conservation based on existing PAs was no longer optimal.It was critical to construct a connected and resilient conservation network relying on both important biodiversity areas and low human footprint patches.

Expansion of protected areasMammalian speciesConnectivity corridorsNetwork resilienceClimate change adaptation

Dongmei Xu、Jian Peng、Jianquan Dong、Hong Jiang、Menglin Liu、Yuhang Luo、Zihan Xu

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Technology Innovation Center for Integrated Ecosystem Restoration and Sustainable Utilization,Ministry of Natural Resources,College of Urban and Environmental Sciences,Peking University,Beijing 100871,China

School of Landscape Architecture,Beijing Forestry University,Beijing 100083,China

Key Laboratory for Environmental and Urban Sciences,School of Urban Planning and Design,Shenzhen Graduate School,Peking University,Shenzhen 518055,China

School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China

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National Key Research and Development Program of China

2022YFF1303201

2024

10.1016/j.scib.2024.04.036

科学通报(英文版)
中国科学院

科学通报(英文版)

CSTPCD
ISSN：1001-6538
年,卷(期)：2024.69(14)
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