中文摘要：

凋落物和植物根系是森林土壤有机碳的主要来源.综述了不同碳输入方式对土壤全碳、微生物生物量碳和可溶性有机碳等碳库组分及土壤呼吸影响的研究进展.不同地区、不同森林土壤有机碳对碳输入的响应程度不同,且采用添加和去除凋落物,以及去除根系方法（DIRT）对土壤碳的影响具有树种差异和区域差异.目前主要侧重于土壤呼吸和碳库组分的研究,亟需开展对土壤碳的结构类型和稳定性,以及土壤生物尤其是土壤动物的响应机制的相关研究.

英文摘要：

Litters and plant roots are the main sources of forest soil organic carbon（C）.This paper summarized the effects of the changes in C input on the forest soil C pool and C cycle,and analyzed the effects of these changes on the total soil C,microbial biomass C,dissoluble organic C,and soil respiration.Different forests in different regions had inconsistent responses to C input change,and the effects of litter removal or addition and of root exclusion or not differed with tree species and regions.Current researches mainly focused on soil respiration and C pool fractions,and scarce were about the effects of C input change on the changes of soil carbon structure and stability as well as the response mechanisms of soil organisms especially soil fauna,which should be strengthened in the future.