升高的CO2和N逐渐削弱多样性对生态系统稳定的影响
Neha Mohanbabu1, Forest Isbell2, Sarah E Hobbie2
1Department of Forest Resources, University of Minnesota, St. Paul, Minnesota, USA.
Ecology letters
|August 7, 2025
概括
生物多样性在25年内提高了草原的生产力. 然而,随着时间的推移,二氧化碳 (CO2) 和 (N) 沉积的增加削弱了生物多样性对生态系统稳定的积极影响.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 全球变化生物学
背景情况:
- 生物多样性对生态系统的生产力和稳定性至关重要.
- 全球变化,如大气二氧化碳 (CO2) 和 (N) 沉积的增加,可以改变这些效应.
- 全球变化对生物多样性与生态系统关系的长期影响尚未完全理解.
研究的目的:
- 研究长期暴露于全球变化的影响如何影响生物多样性与生态系统生产力和稳定性之间的关系.
- 评估二氧化碳 (CO2) 和 (N) 沉积量的增加对25年来草原生态系统的影响.
主要方法:
- 利用了长达25年的草原生物多样性全球变化实验.
- 在环境和变化的CO2和N条件下监测生态系统的生产力和稳定性.
- 分析了物种异步的变化,作为稳定性的驱动力.
主要成果:
- 在25年的研究期间,生物多样性始终提高了草原的生产力,而不管全球变化治疗方法如何.
- 生物多样性对生态系统稳定的积极影响在环境条件下随着时间的推移而得到加强.
- 全球变化处理 (二氧化碳和丰富) 削弱了生物多样性对稳定的积极影响,主要是通过减少物种异步.
结论:
- 25年来,二氧化碳和丰富减少了草原生物多样性的稳定作用.
- 同时增加的高二氧化碳,缩和生物多样性丧失对草原的长期稳定性构成风险.
- 调查结果突出了全球变化对关键生态系统功能的潜在有害联合影响.
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