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全球合成受精诱导的微生物埋葬效应的变化

Haoran Fu^1,2,3, Hong Chen⁴, Zhengbo Ma⁵

¹Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China.

Global change biology

|June 19, 2025

概括

施肥通过增加微生物死体碳 (MNC) 和微生物生物质碳 (MBC) 来增强土壤碳储存. 有机-无机混合肥料,如,和 (NPS),显示出最大的MNC积累潜力,增强土壤碳封存.

科学领域:

土壤科学土壤科学
微生物学微生物学
生物地质化学生物地质化学

背景情况:

微生物埋葬效应描述了如何通过微生物生物质和死体积累来稳定土壤碳.
施肥实践显著改变了土壤微生物的动态和碳循环,影响了这一关键的土壤碳捕集机制.

研究的目的:

进行全球元分析,评估受精对微生物埋葬效应的影响.
为了量化微生物死体碳 (MNC),微生物生物质碳 (MBC) 和微生物死体积累系数 (NAC) 在各种施肥策略下的变化.

主要方法:

全球对MNC,MBC和NAC的319,1665和199个配对数据集进行了元分析.
对施肥影响的分析,包括无机肥, (N) 和 (P) 与草 (NPS) 的结合,以及N,P与 (NPM) 的结合.
在微生物碳池中研究环境因素,如年平均温度 (MAT),初始pH (ipH) 和初始土壤有机碳 (iSOC).

主要成果:

整体肥料增加了MNC的16.6%和MBC的31.9%,MNC的增长是由MBC的增长而不是NAC的增长驱动的.
无机肥在耕地中增强了MNC和MBC,而不是在森林和草原中.
NPS肥料显示全球MNC积累的潜力最高 (14,900 Tg),而NPM产生了全球MBC (660 Tg) 和NAC (35.3) 的潜力最高.

结论:

有机-无机结合的施肥策略对于通过微生物埋葬效应最大限度地提高土壤碳封存至关重要.
考虑诸如土壤pH值和有机碳含量等因素的特定场地管理对于优化化肥料策略至关重要.
在性土壤中,NPS和NPM肥料特别有望增强MNC和NAC.

关键词:

这是一个元分析.微生物生物质的碳碳.微生物死体积累系数的微生物死体积累系数微生物死亡物质碳的碳质.土壤有机碳土壤有机碳

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