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Zhaoyang Luo¹, Jianning Ren¹, Stefano Manzoni²

¹Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore.

Global change biology

|September 9, 2024

概括

微生物碳利用效率 (CUE) 和温度 (T) 相互作用显著影响土壤有机碳 (SOC) 储存. CUE和T之间的关系决定了SOC是否增加或减少,温度是主导因素.

科学领域:

土壤科学土壤科学
微生物生态学微生物生态学
生物地质化学生物地质化学

背景情况:

微生物碳利用效率 (CUE) 对土壤有机碳 (SOC) 动态至关重要,它决定了碳分配到微生物生长与呼吸之间.
CUE和SOC存储之间的关系是复杂的和有争议的,研究表明积极和消极的相关性.
温度 (T) 影响微生物过程,包括CUE,其在SOC储存中的作用需要进一步研究.

研究的目的:

为了研究SOC和CUE之间的关系,考虑温度的影响.
探索温度对CUE的影响如何影响SOC存储.
为了阐明控制SOC储存在不断变化的气候条件下的主导因素.

主要方法:

使用了全球现场数据和数值模拟的组合.
分析了CUE,温度和SOC之间的相互作用.
模拟了不同CUE-温度关系对SOC动态的影响.

主要成果:

CUE-温度 (CUE-T) 关系的符号决定了SOC-CUE关系的方向.
一个负的CUE-T关系导致一个正的SOC-CUE关系,反之亦然.
温度对SOC储存的影响比CUE更为主导,无论CUE-T模式如何.

结论:

CUE-T模式是SOC-CUE关系的关键决定因素.
温度在调节SOC储存方面起着主要作用.
这些发现提高了对土壤有机碳和微生物对气候变暖的反应的理解.

关键词:

气候变暖气候变暖数据分析数据分析数据分析微生物碳使用效率效率.数字建模数字建模土壤生物地质化学土壤生物地质化学土壤碳建模模型

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