The change in soil organic carbon content (SOC) in the organic layer after warming from −4 to −1 ° C for each landform and OLT depth class

Table 1. The change in soil organic carbon content (SOC) in the organic layer after warming from −4 to −1 ° C for each landform and OLT depth class. Soil organic layer thickness was transformed using (2). Abstract Permafrost is tightly coupled to the organic soil layer, an interaction that mediates permafrost degradation in response to regional warming. We analyzed changes in permafrost occurrence and organic layer thickness (OLT) using more than 3000 soil pedons across a mean annual temperature (MAT) gradient. Cause and effect relationships between permafrost probability (PF), OLT, and other topographic factors were investigated using structural equation modeling in a multi-group analysis. Groups were defined by slope, soil texture type, and shallow (