在一项大型实地实验中,土地利用调整了草原对未来气候和年度间气候变化的抵抗力
Lotte Korell1,2,3, Martin Andrzejak2,3, Sigrid Berger1
1Department of Community Ecology, Helmholtz-Centre for Environmental Research-UFZ, Halle, Germany.
Global change biology
|July 22, 2024
概括
气候和土地利用变化影响草原. 草原中较少的密集管理和较高的植物多样性提高了气候变化下的稳定性和生产力,优于密集方法.
科学领域:
- 生态生态学 生态生态学
- 全球变化生物学
- 农业科学 农业科学
背景情况:
- 气候和土地利用变化是全球环境转变的主要驱动因素.
- 了解它们对草原生态系统的相互作用影响对于预测至关重要.
- 草原生态系统提供基本的生态系统服务,并支持农业生产力.
研究的目的:
- 研究气候和土地利用变化对草原生态系统的相互作用影响.
- 评估草原植物群落的长期动态和在操纵全球变化驱动因素下的生产力.
- 为了比较密集管理的草原与广泛管理的草原对气候变化的弹性.
主要方法:
- 利用一个全因数实地实验操纵温度,降水和土地利用强度超过八年.
- 实施基于区域气候模型预测的气候操纵,叠加在背景变化.
- 对比密集使用 (低物种多样性) 和广泛使用 (高物种多样性) 的草地和牧场.
主要成果:
- 年际气候变化,特别是干旱,对植物物种多样性和生产力产生了重大影响,超过了实验气候变化影响.
- 密集管理的草原表现出更大的敏感性,移民物种取代了料作物,降低了料价值.
- 经过广泛管理,多样化的草原对被操纵的气候变化和跨年变化都表现出更高的抵抗力.
结论:
- 在气候变化下,农业草原的管理强度较低和植物多样性较高提高了生态系统稳定性和初级生产力.
- 密集的草原管理实践可能会增加对气候变化和经济成本的脆弱性.
- 多样化,广泛管理的草原为面对全球变化的可持续农业系统提供了更有弹性的模式.
关键词:
ANPPPP ANPP 在线阅读全球变化实验设施气候变化 气候变化 气候变化社区动态 社区动态放牧草地 放牧草地 放牧草地土地使用强度的土地使用强度.修剪 修剪 修剪 修剪 修剪植物多样性 植物多样性更多相关视频
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