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植物入侵增加了土壤微生物生物质碳:元分析和经验测试

Yuyang He^1,2, Junmei Li¹, Evan Siemann³

¹State Key Laboratory for Vegetation Structure, Function and Construction (VegLab), Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, and Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, China.

Global change biology

|March 3, 2025

概括

植物入侵显著增加了土壤微生物生物质碳 (MBC),土壤有机碳 (SOC) 的一个关键组成部分. 这一发现凸显了入侵植物在全球碳循环中的复杂作用.

科学领域:

生态生态学生态生态学
土壤科学土壤科学
环境科学环境科学

背景情况:

土壤有机碳 (SOC) 对土壤健康和全球碳循环至关重要.
影响SOC的因素包括土地使用,管理和气候变化.
生物入侵对SOC的影响仍然存在争议.

研究的目的:

为了澄清植物入侵对土壤有机碳 (SOC) 水平的影响.
为量化微生物生物质碳 (MBC) 因植物入侵而发生的变化.
研究生态系统类型和入侵物种如何影响这些变化.

主要方法:

进行了从61份已发表的报告中对445个观察结果的元分析.
进行后续实地调查以验证发现.
分析了MBC作为SOC的关键分数.

主要成果:

植物入侵导致微生物生物质碳 (MBC) 平均增加了29%.
在各种生态系统 (河口,湿地,果园) 和特定植物家族 (Asteraceae,Lythraceae) 中观察到显著的MBC增加.
实地调查证实土壤MBC与植物入侵相比,与本地植物或裸露地面相比,土壤MBC的高度较高.

结论:

植物入侵通过增加MBC而对土壤碳产生重大影响.
这些增加可以影响未来的入侵动态.
这些影响是复杂的,取决于入侵物种,生态系统和土壤深度,强调生物入侵在全球碳循环中的复杂作用.

关键词:

效果大小效果大小的影响.全球碳循环的全球碳循环侵袭性植物侵袭性植物微生物生物质的碳碳.植物入侵植物入侵土壤有机碳土壤有机碳

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