黑土农田自然恢复土壤有机碳的演变

SOC change of natural restoration for black soil farmland

Century模型是世界上用来预测土壤有机碳趋势的重要模型之一,近20年来在农林生态系统上得到了广泛的应用;运用该模型对黑土农田自然恢复条件土壤有机碳的变化进行了预测,结果表明:Century模型可以预测黑土农田自然恢复土壤有机碳的演变;自然恢复条件下,短期内已垦黑土农田有机碳水平略有下降,20年后开始缓慢上升。

Century Model is one of the prediction models for soll organic carbon dynamics in the world and has been used extensively in agroecosystem and forestry ecosystem. The paper uses the model to predict SOC changes of natural restoration for black soil farmland.The result show that the SOC content decreases slightly in recent 20 years, and then increases slowly.