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森林菌根类型通过对全球颗粒物和矿物相关有机物储存的环境控制进行了调解

Luping Ma¹, Zhaoyong Shi¹, Manman Jing¹

¹College of Agriculture, Henan University of Science and Technology, Luoyang, 471023, China; Henan Engineering Research Center of Human Settlements, Luoyang, 471023, China; Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, 471023, China.

Environmental research

|March 23, 2025

概括

树枝状菌根 (AM) 森林储存的土壤有机物 (SOM) 更多,而不是生态菌根 (ECM) 森林,特别是物理保护的MAOM部分. 菌根类型影响气候和土壤因素如何控制全球森林中的SOM储存.

科学领域:

森林生态森林生态学
土壤科学土壤科学
菌类学菌类学是指菌类学.

背景情况:

大多数树木与状菌根 (AM) 或状菌根 (ECM) 菌类形成共生关系,影响土壤碳动力学.
了解菌根如何调节森林土壤有机物 (SOM) 对全球碳循环和气候变化研究至关重要.
目前存在关于AM和ECM真菌在颗粒物 (POM) 和矿物相关有机物 (MAOM) 储存中的特定作用的知识差距.

研究的目的:

研究不同菌根类型 (AM与ECM) 在全球森林中对POM和MAOM储存的监管作用.
阐明环境因素 (气候,土壤) 和净初级产量 (NPP) 如何与菌根类型相互作用以控制SOM储存.

主要方法:

分析了全球81个AM和124个ECM森林遗址的公布数据.
利用差异分区分析 (VPA),随机梯度提升和R的路径分析.
包括有机物分数 (POM,MAOM,总SOM),气候 (MAT,MAP-PET),土壤特性 (pH,质地) 和核电站的数据.

主要成果:

与ECM森林相比,AM森林的MAOM (8.41g C kg-1土壤) 和总SOM (8.20g C kg-1土壤) 储存量明显高于ECM森林.
与AM森林 (17.56-31.20%) 相比,环境因素解释了ECM森林中SOM变化的比例较大 (40.06-46.70%).
在AM森林中MAOM储存主要是由粘土含量和NPP驱动的,而在ECM森林中,它是由年平均温度 (MAT) 和降水-蒸发 (MAP-PET) 驱动的.

结论:

菌根类型显著影响森林SOM储存,AM真菌促进了更大的MAOM积累.
气候和土壤特性是SOM储存的主要驱动因素,但它们的效应是由菌根协会调节的.
不同的菌根策略导致不同的机制控制POM和MAOM动态,影响森林的整体碳捕获.

关键词:

气候气候气候气候气候环境控制环境控制森林的森林森林的森林.菌根菌是什么菌根菌土壤有机物质的分量.

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