垃圾的改变减少了生态系统的多功能性,因为阿尔卑斯山草原的地面和地下反是不同的
Guomin Xue1, Lihua Tian1, Jingxue Zhao2
1Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, and College of Grassland Resources, Southwest Minzu University, Chengdu, 610041, China.
Journal of environmental management
|May 17, 2025
概括
改变植物垃圾对高山草原的生态系统多功能性产生影响. 垃圾添加和移除都降低了整体功能,不同影响了地面和地下的过程.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 草地生态 草地生态
背景情况:
- 植物垃圾对全球草原的生物地球化学过程和生态功能产生重大影响.
- 对于植物垃圾对半潮湿高山草原多种生态功能的影响的了解有限.
研究的目的:
- 为了研究不同的植物垃圾输入水平如何影响半潮湿高山草原的生态系统多功能性 (EMF).
- 为了确定地面和地下生态功能对植物垃圾操纵的不同反应.
主要方法:
- 在阿尔卑斯山草原环境中进行了受控的实地实验.
- 应用了不同水平的植物垃圾输入 (添加和删除) 来评估其影响.
- 生态系统的多功能性 (EMF),地面的EMF (AEMF) 和地下的EMF (BEMF) 被量化.
主要成果:
- 移除植物垃圾通常会增加植物的多样性和生产力,但会减少土壤的营养.
- 增加植物垃圾往往会降低植物多样性和生产力,同时增加土壤营养.
- 垃圾添加和移除都对整体EMF产生了负面影响,在高垃圾添加 (L+100%) 和移除 (L-50%,L-100%) 处理下观察到显著下降.
- 随着垃圾的增加,地面功能下降,而地下功能显示出积极的趋势.
- 地下功能随着垃圾清除而下降,而地面功能显示出积极的趋势.
- 植物垃圾操纵通过改变植物多样性,生产力和土壤肥力直接影响了EMF.
结论:
- 植物垃圾操纵显著影响半潮湿的高山草原中的生态系统多功能性.
- 由气候变化和放牧等因素驱动的垃圾输入的变化,可以改变地表和地下生态系统功能的平衡.
- 了解这些动态对于维持生态功能和预测改变垃圾投入对草原生态系统的影响至关重要.
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