微生物对变化的植物群体的反应在全新世纪的干燥过程中保护了泥炭地碳储量
Yiming Zhang1,2,3, Xianyu Huang4,5, Bingyan Zhao1,6
1State Key Laboratory of Geomicrobiology and Environmental Changes, China University of Geosciences, Wuhan, China.
Nature communications
|July 27, 2025
概括
泥炭地中的木质植物扩张通过改变微生物代谢和泥炭成分来增强碳储存. 这种转变促进了强硬的碳池,保护了气候压力下的泥炭地.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 古生态学 古生态学
背景情况:
- 泥炭地是关键的长期碳汇.
- 气候变化正在推动泥炭地木质植物的扩张,改变生态系统.
- 在这些转变期间,微生物过程在碳储存中的作用尚不清楚.
研究的目的:
- 研究如何微生物过程调节碳储存在泥炭地植被转移期间.
- 揭示木质扩张影响泥炭地碳动态的机制.
- 了解泥炭地在气候压力下的碳弹性.
主要方法:
- 整合了来自中国亚热带泥土的多代理记录.
- 全球综合155个泥炭地古生态数据.
- 微生物代谢和泥炭有机成分的分析.
主要成果:
- 由变暖和干燥驱动的木材扩张抑制了细菌异质变化,并将新陈代谢转向了自变化.
- 泥炭有机物转化,碳水化合物减少,芳香物增加,形成反抗性碳池.
- 峰值碳积累率与木质扩张期间微生物异质变异的减少相吻合.
结论:
- 木材扩张可以增强长期碳储存在泥炭地.
- 微生物代谢的转变和泥炭成分的变化是关键的调节机制.
- 泥炭地储存碳是通过这些植被驱动的微生物反应抵御气候压力的.
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