Vulnerabilities of protected lands in the face of climate and human footprint changes.

Vulnerabilities of protected lands in the face of climate and human footprint changes.
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受保护土地面对气候和人类足迹变化的脆弱性。

DOI:
10.1038/s41467-021-21914-w
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发表时间:
2021-03-12
影响因子:
16.6
通讯作者:
Wang Z
Wang Z
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Shrestha N;Xu X;Meng J;Wang Z

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保护区在维持物种生存种群和减少其栖息地丧失方面发挥着关键作用。在全球范围内,目前有超过20万个保护区,覆盖了大约15%的土地面积。2020年后全球生物多样性框架的目标是到2030年将这一覆盖率扩大到30%。然而,只关注保护区的覆盖百分比而不评估其有效性可能无法实现保护目标。本文采用综合物种、气候和人为脆弱性的多维方法对中国2500多个保护区的威胁程度进行了评估。我们发现中国近10%的保护区是最受威胁的保护区,约五分之一的保护区是气候和人为脆弱性的热点地区。我们还发现,在物种脆弱的热点地区,气候高度不稳定,表明在那里物种灭绝的可能性增加。我们的框架可用于评估全球受保护土地的弹性,也可用于选择接近最佳的区域以供其未来扩展。保护区(PA)的扩大是一个主要的保护目标,但其有效性存在争议。在此,作者提出了一个多维框架来评估PA脆弱性并选择适合扩展的区域,并在低排放情景下对中国2572个PA进行了验证。
Protected areas (PAs) play a pivotal role in maintaining viable populations of species and minimizing their habitat loss. Globally, there are currently over 200,000 PAs that cover approximately 15% of land area. The post-2020 global biodiversity framework aims to expand this coverage to 30% by 2030. However, focusing only on the percentage coverage of PAs without evaluating their effectiveness may fail to achieve conservation goals. Here, we use a multidimensional approach incorporating species, climate and anthropogenic vulnerabilities to assess the threat levels in over 2500 PAs in China. We identify nearly 10% of PAs as the most threatened PAs in China and about one-fifth PAs as hotspots of climate and anthropogenic vulnerabilities. We also find high climate instability in species vulnerability hotspots, suggesting an elevated likelihood of species’ extirpation therein. Our framework could be useful in assessing resiliency of global protected lands and also in selecting near optimal areas for their future expansion. Proected areas (PA) expansion is a major conservation goal, but its effectiveness is debated. Here, the authors propose a multi-dimensional framework to assess PA vulnerability and select areas suitable for expansion, demonstrating it for 2572 PAs in China under a low-emission scenario.
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发表时间: 2014-10
期刊: The Journal of applied ecology
影响因子: --
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