资源可用性和息地质量驱动时间滞后效应在高海拔类分布
Lu Wang1,2,3, Xiuming Li1,2,3, Ben Huang1,2,3
1Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China.
Integrative zoology
|October 9, 2025
概括
西藏高原的高海拔类动物在应对环境变化时表现出5-6年的分布滞后效应 (DLE). 息地变化,而不是气候,主要推动了这些延迟的动物分布变化.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 保护生物学 保护生物学
背景情况:
- 环境因素对生态系统的运作,社区的稳定性和物种分布有着关键的影响.
- 对环境因素直接影响的研究有限,传统模型往往忽视了跨物种相互作用.
- 了解对环境变化的延迟反应对于有效的保护至关重要.
研究的目的:
- 分析高海拔类动物分布对西藏高原历史息地条件的滞后反应.
- 在这些物种中定义和量化分布滞后效应 (DLE).
- 为阿尔卑斯山生态系统提供可持续管理和长期保护战略的信息.
主要方法:
- 采用了联合物种分布模型和通用添加模型.
- 分析了2022-2023年四种类动物 (Equus kiang,Pantholops hodgsonii,Procapra picticaudata和Bos mutus) 的地理分布模式,与历史息地数据 (2001-2019) 相比.
- 研究了气候和息地变化对物种分布滞后的影响.
主要成果:
- 息地变化是观察到物种分布反应延迟的主要驱动因素,比气候更重要.
- 与集中的群体相比,分散的类动物群体的时间延迟较短.
- 在高海拔类动物分布中发现了显著的5-6年分布滞后效应 (DLE).
结论:
- 保持息地质量和缓解随时间推移的资源竞争对于可持续的高山草原管理至关重要.
- 确定的分布滞后效应 (DLE) 为保护规划提供了关键的见解.
- 结果为长期保护高海拔类动物及其息地提供了指导.
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