Dataset of SOC and AM dominance in China's forests

We classified the sample plots into three categories based on the proportion of AM trees: AM-Subordinated (AMS) forests (< 40%), AM-Mixed (AMM) forests (40%-60%), and AM-Dominated (AMD) forests (> 60%). Additionally, they were further classified into Low SOC content and High SOC content groups based on the SOC level.

我们依据AM树木占比将样地划分为三类：AM从属林（AM-Subordinated, AMS）（占比<40%）、AM混交林（AM-Mixed, AMM）（占比40%~60%）以及AM优势林（AM-Dominated, AMD）（占比>60%）。此外，我们还可依据土壤有机碳（Soil Organic Carbon, SOC）水平将上述样地进一步划分为低SOC含量组与高SOC含量组。