土壤有机碳储量、影响因素及其环境效应的研究进展

Advances in Researches on Soil Organic Carbon Storages, Affecting Factors and Its Environmental Effects

土壤有机碳储量、分布及其转化在陆地碳循环中起着重要的作用。本文对国内外土壤有机碳贮量研究的意义、主要方法和结论 ,以及影响有机碳贮量的因素 ,包括温度和降雨等自然因素、土地利用 /覆盖变化等人为因素以及大气CO2 浓度上升与土壤有机碳之间的反馈作用等方面的国内外研究进展进行了综述 ,介绍了土壤有机碳变化对土壤质量和环境质量的影响以及土壤碳截存对策的有关研究概况。

Soil organic carbon is a significant component of the earth's carbon reservoir, and its storage and fluxes play a major role in the globe budget of carbon. This paper reviewed the advances of domestic and overseas studies on the estimation of soil organic carbon pool, the influence of natural factors and anthropomorphic disturbances including land use/cover changes, over-grazing, agricultural practices and rises of CO 2 on soil organic carbon storages. In addition, the effects of soil organic carbon on soil quality and environment regulation, some strategies of sequestering C in soil were presented. The significance of studies on soil organic carbon changes and its ecological effects were discussed.