土壤侵蚀对土壤有机碳库去向的影响

Effects of Soil Erosion on the Fate of Soil Organic Carbon Pool

土壤有机碳库是陆地生态系统中最重要的碳库。土壤侵蚀是导致陆地碳库衰减的主要动力之一,也是陆地碳汇与海洋碳汇相互作用的重要过程。从不同角度阐述了物理和人为因素对侵蚀区域土壤有机碳迁移蓄积过程的影响,尤其关注了侵蚀过程碳的重新再分配,这一点是准确预测土壤有机碳循环对碳源/汇贡献及准确评估碳收支的关键。针对土壤有机碳循环的特点,提出亟待解决的问题。

Soil organic carbon pool is the most important carbon pool in the terrestrial ecosystem.Soil erosion is one of main powers that lead the attenuation of terrestrial carbon pool.And it is also the important process of the interaction between terrestrial carbon sink and marine carbon sink.The effects of physical and man-made factors on the transfer and accumulation processes of soil organic carbon in erosion regions were expounded from different aspects.Special attentions were paid to the redistribution of carbon in the erosion process,which was the key for predicting the contribution of soil organic carbon cycle on the carbon resources/ sink actually and evaluating the carbon budget.According to the characteristics of soil organic carbon cycle,some problems needed to be solved were put forward.