全球山区的气候速度和物种追踪
Wei-Ping Chan1,2,3,4, Jonathan Lenoir5, Guan-Shuo Mai1
1Biodiversity Research Center, Academia Sinica, Taipei, Taiwan.
Nature
|March 28, 2024
概括
山地生态系统面临气候变化, 这项研究在全球范围内绘制了垂直同热变速图,确定了17个对生物多样性保护至关重要的高速度区域.
科学领域:
- 生态与保护生物学
- 气候科学
- 地质科学
背景情况:
- 山脉是生物多样性的热点,也是气候变化威胁物种的重要避难所.
- 预测物种对变暖的反应需要了解等热体是如何沿着海拔梯度移动的.
- 在山区有限的气象站数据阻碍了对等热变化的全球分析.
研究的目的:
- 使用卫星数据和热力学原理绘制全球垂直异热转移速度.
- 识别具有异常快速垂直同热变化的山区.
- 评估物种追踪这些变化的能力,并为保护战略提供信息.
主要方法:
- 全球测绘的温度失效率 (表面和湿)
- 通过将表面变暖率 (1971-2020年) 划分为失效率来计算垂直异热转移速度.
- 与物种范围转移速度比较的等热转移速度.
主要成果:
- 确定了17个具有高垂直异热转移速度的山区 (SLRT> 11.67 m/yr,MALRT> 8.25 m/yr).
- 这些高速区域主要位于干旱地区,但也包括湿地区,失效率较低.
- 观察到许多物种落后于同热变化的速度,表明持续的范围动态.
结论:
- 全球对垂直同热变化的绘制为了解气候变化对山区生物多样性的影响提供了至关重要的数据.
- 已确定17个高速区域需要有针对性的保护工作.
- 种类无法跟上快速气候变化的步伐, 凸显了保护行动的紧迫性,
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