Replication Data for: Drivers of soil C quality and stability: Insights from a topsoil dataset at landscape scale in Ontario, Canada

This study used a large dataset of mineral topsoil samples collected from agricultural fields across Ontario through the Ontario Topsoil Sampling Project (OTSP). Previously, the OTSP dataset was used to assess the soil health scoring functions (Chahal et al., 2023) and SOC:clay ratio as an indicator of soil functionality (Chahal et al., 2024). The goal of the present study was to evaluate the impact of agricultural management and environmental variables on soil C indicators (SOC, 96-h C mineralization potential (Cmin-96h), POXC, Solvita CO2-burst, and ACE) and indicators of thermal stability of soil C using programmed pyrolysis (HI, OI, and T50). We also assessed the associations among these soil C indicators at the landscape scale to comprehensively assess the major drivers of soil C.