经营措施影响森林土壤碳库和温室气体排放的研究进展

摘要

综述了不同经营措施对森林土壤碳库和温室气体排放的影响。大多数研究认为施肥可以显著增加土壤有机碳库，但同时也增加了土壤温室气体的排放；去除林下植被可以加快有机碳的分解，导致土壤有机碳含量降低和CO2排放增加；而增加林下植被可以增加土壤有机碳含量和土壤温室气体的排放；土地利用方式从天然林转变为其他土地利用方式（如次生林，农田，草地等），土壤有机碳含量均会下降和CO2排放增加。%The responses of soil carbon (C) pools and greenhouse gas (GHG) emissions to management practices of plantation were reviewed. Various management practices, such as fertilization, understory weeding, land-use change, etc. have a significant influence on soil C pools and GHG emissions. Studies reported that fertilization can markedly increase soil organic C (SOC) pools and soil GHG emissions in forest ecosystem, and understory weeding can decrease SOC content and increase soil CO2 emission. Changes of land-use from natural forest to other land use patterns (such as secondary forest, agricultural land, grassland, etc.) decreased significantly in SOC content and increased in soil CO2 emission.