\"Arbuscular mycorrhizal dominated forests facilitate organic carbon stabilization in soil aggregates\"

Tree mycorrhizal association types play a pivotal role in soil carbon (C) accumulation. However, their effects on soil C stabilization remain controversial, and the mechanisms of how mycorrhizal types affect aggregate-associated soil organic carbon (SOC) are poorly understood. To investigate how tree mycorrhizal associations affect aggregate-associated SOC sequestration, we examined the soil aggregates, glomalin-related soil protein (GRSP), soil respiration, and microbial traits from samples collected in four arbuscular mycorrhizal (AM)- and four ectomycorrhizal (ECM)-dominated stands. Additionally, we conducted a one-year mixed-litter incubation experiment to determine the effect of mycorrhizal type on these soil properties under controlled conditions. The results showed that AM-dominated forests had 65.5% higher total aggregate-associated SOC than ECM forests in the field, and that high-quality AM litter increased it by 16.5% compared to low-quality ECM litter in the incubation expe..., , # Data from: \"Arbuscular mycorrhizal dominated forests facilitate organic carbon stabilization in soil aggregates\" Dataset DOI: [10.5061/dryad.8pk0p2p3m](https://doi.org/10.5061/dryad.8pk0p2p3m) ## Description of the data and file structure We collect soil samples and tree leaf litter samples from a permanent plot in the central region of the experimental forest of Northeast forestry university, Harbin, China. In our field experiment, we measured soil chemical properties, aggregate-associated SOC, and microbial community characteristics, and determined the proportion of arbuscular mycorrhizal (AM) tree species in each plot. In the laboratory litter incubation experiment, we measured the same soil chemical properties and aggregate-associated SOC to verify the effects of different mycorrhizal types on carbon in soil aggregates. ### Files and variables #### File: dataset.xlsx **Description:** Dataset for the manuscript “Arbuscular mycorrhizal dominated forests facilitate organic car..., ,树木菌根共生类型在土壤碳（C）累积过程中发挥关键作用。然而，其对土壤碳稳定的影响仍存在争议，而菌根类型如何调控团聚体结合态土壤有机碳（soil organic carbon, SOC）的作用机制尚不明晰。 为探究树木菌根共生如何影响团聚体结合态土壤有机碳固存，本研究对4个丛枝菌根（arbuscular mycorrhizal, AM）优势林分和4个外生菌根（ectomycorrhizal, ECM）优势林分的土壤团聚体、球囊霉素相关土壤蛋白（glomalin-related soil protein, GRSP）、土壤呼吸及微生物性状进行了检测，样本采集自上述林分。此外，本研究还开展了为期1年的混合枯落物培养试验，以明确控制条件下菌根类型对上述土壤属性的影响。 研究结果显示，野外条件下丛枝菌根优势林分的总团聚体结合态土壤有机碳含量较外生菌根优势林分高65.5%；而在培养试验中，高质量丛枝菌根枯落物较低质量外生菌根枯落物可使土壤有机碳含量提升16.5%…… 数据来源："Arbuscular mycorrhizal dominated forests facilitate organic carbon stabilization in soil aggregates" 数据集DOI：[10.5061/dryad.8pk0p2p3m](https://doi.org/10.5061/dryad.8pk0p2p3m) ## 数据与文件结构说明 本研究从中国哈尔滨东北林业大学实验林场中部的一处永久样地采集土壤样品与树木枯落物样品。野外试验中，我们测定了土壤化学性质、团聚体结合态土壤有机碳及微生物群落特征，并明确了各样地内丛枝菌根（AM）树木的占比。室内枯落物培养试验中，我们测定了相同的土壤化学性质与团聚体结合态土壤有机碳，以验证不同菌根类型对土壤团聚体中碳的影响。 ### 文件与变量 #### 文件：dataset.xlsx **说明：** 本论文配套数据集《Arbuscular mycorrhizal dominated forests facilitate organic car……》