土地利用变化的土壤碳效应研究进展

Advances in The Study of Soil Carbon Effect of Land-use Change

综合阐述了土地利用变化土壤碳效应研究的重要意义,分析了土壤有机碳蓄积、土壤碳释放、土地利用变化及其土壤碳效应等方面的研究进展;最后指出精确估计土壤碳库、开展综合的土地利用变化土壤碳效应研究和深入分析土地利用/覆被变化对陆地生态系统碳平衡的影响是未来陆地表层碳循环的重点内容。

Land use change is altering the net primary productivity of the earth surface and affects the atmospheric CO2 sequestration through terrestrial ecosystem. The change can influence the soil organic carbon storage through altering the transformation of soil organic matter input and the decomposition speed of soil organic carbon. In the paper, the important meaning of the land-use change and the study on soil carbon effect are expounded synthetically. The research evolvement of soil organic carbon storage, soil carbon emission, land-use change and its impact on soil carbon are analyzed. It is considered that the following topics should be emphasized in terrestrial carbon cycle research in the future： precise estimation of soil carbon storage, integrative research of land use change and soil carbon effect, and analysis of the impact of land use and vegetative cover change on the carbon balance of terrestrial ecosystem.