Soil carbon changes in cultivated and excavated land converted to grasses in east-central Saskatchewan

摘要: The conversion of annually cultivated or disturbed marginal land to forage grasses has the potential accrete soil organic carbon (SOC) in surface 0–15 cm depth. Soil mass (Mg ha−1) was measured ten side-by-side versus grass seed-down restoration treatments on catenae at various sites east-central Saskatchewan, Canada. Treatments were imposed for time periods ranging from five twelve years. It found that SOC usually significantly higher grassland restorations paired equivalents. Estimated gain rates (0–15 cm) region estimated be 0.6 0.8 Mg C ha−1 yr−1. Light fraction (LFOC), labile component SOC, more variable comparisons than SOC. Measured 13C natural abundance values selected equivalent revealed a possible contribution seeded warm season C4 and carbonate pools upslope positions landscape. Overall, this appears result increased storage soil.