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温度值导致全球山地生态系统的生物多样性和生态系统服务发生急剧变化

Xiao-Min Zeng^1,2,3, Miguel Berdugo⁴, Tadeo Saez-Sandino⁵

¹Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), Sevilla E-41012, Spain.

Proceedings of the National Academy of Sciences of the United States of America

|April 14, 2025

概括

山地生态系统显示生物多样性和生态系统服务随着变暖而发生急剧变化. 平均年气温约为10°C,微小的变化会引发剧烈的反应,影响全球的多样性和服务.

科学领域:

生态生态学生态生态学
气候变化生物学气候变化生物学
全球环境科学全球环境科学

背景情况:

山地生态系统对全球生物多样性和维持生命的功能至关重要.
这些生态系统对温度变化和气候变化特别敏感.
了解山地生物多样性和生态系统服务对局部温度变化的反应的性质 (渐进或突然) 是至关重要的.

研究的目的:

研究山地生物多样性和生态系统服务如何应对全球局部温度变化.
为了确定这些反应是否在海拔梯度上是渐进的还是突然的.
为了确定引发重大变化的关键温度值.

主要方法:

从290个海拔梯度的4462个观测结果的全球综合.
分析生物多样性 (植物和动物) 和生态系统服务 (植物生产,土壤碳,肥力) 的反应.
统计调查沿海拔梯度的局部温度变化.

主要成果:

近三分之一的山地梯度显示生物多样性和生态系统服务的急剧变化.
确定了大约10°C的平均年温度门,超出这个门,微小的温度增加会导致剧烈的变化.
突然的转变往往对多样性和植物生产是积极的,但对土壤碳和肥沃性是负面的.

结论:

世界各地的山地生态系统对局部温度变化表现出普遍的突然反应.
这些发现凸显了山地生态系统对气候变化的高度敏感性.
迫切需要制定保护战略,以应对山区生物多样性和生态系统服务的突然变化.

关键词:

气候变化气候变化升降梯度的升降梯度是什么当地温度当地温度非线性反应是非线性反应.门值是指一个值.

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