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气候变化对大熊猫种群的风险:来自息地面积和生物气候速度变化的见解
Lehua Ning1,2, Shulin Yu1,2, Pan Wang1,2
1Key Laboratory of Ecosystem Network Observation and Modelling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
Global change biology
|August 18, 2025
概括
气候变化通过减少息地面积和改变息地质量来威胁大熊猫. 评估灭绝和暴露风险,为有效的保护策略提供了全面的观点.
科学领域:
- 生态与保护生物学 生态与保护生物学
- 气候变化对生物多样性的影响
- 评估物种的脆弱性 评估物种的脆弱性
背景情况:
- 气候变化对生物多样性造成多维影响,影响息地范围和质量.
- 息地面积和生物气候速度是评估物种脆弱性的关键指标.
- 大熊猫 (Ailuropoda melanoleuca) 面临着气候变化带来的重大威胁.
研究的目的:
- 根据息地面积和生物气候速度评估大熊猫的灭绝和暴露风险.
- 检查大熊猫种群的灭绝和暴露风险之间的差异.
- 为大熊猫的气候适应性保护战略提供信息.
主要方法:
- 在SSP2-4.5情景下使用息地面积预测评估大熊猫灭绝风险.
- 在不同种群中使用生物气候速度评估大熊猫暴露风险.
- 根据息地面积和生物气候速度得出的风险评估结果进行比较.
主要成果:
- 在SSP2-4.5下,大熊猫的息地损失预计为13846.1平方公里,林,梁山和达西林种群的损失很大.
- 生物气候速度因种群而异 (-0.468到0.309公里/年),表明潜在的息地适合性下降.
- 虽然大多数种群表现出一致的风险模式,但一些具有低灭绝风险的种群表现出高暴露风险,突出了单维评估的局限性.
结论:
- 结合息地面积和生物气候速度,可以更全面地了解大熊猫对气候变化的脆弱性.
- 风险评估中的差异强调了需要多维方法的必要性.
- 这些发现为开发针对性,气候适应性大熊猫的保护战略提供了科学基础.
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