农田土壤碳饱和机制研究进展  

Advances of Soil Carbon Saturation Mechanisms in Agroecosystems

作　　者：杜章留[1] 张庆忠[1] 任图生[2] 

机构地区：[1]中国农业科学研究院农业环境与可持续发展研究所,北京10008 [2]中国农业大学资源与环境学院,北京100193

出　　处：《土壤与作物》2015年第2期49-56,共8页Soils and Crops

基　　金：中国博士后基金特别项目(201104164);国家科技支撑项目(2012BAD14B01);国家自然基金项目(31261140367)

摘　　要：农田土壤有机碳是土壤肥力的核心,与全球碳循环和气候变化密切相关。然而,土壤有机碳水平并非无限度增加而是存在一个最大容量,或称之为碳饱和水平。本文综述了土壤有机碳的稳定机制、碳饱和理论及其关联性,总结了土壤碳饱和概念模型和饱和亏缺预测等方面的研究进展,分析了我国农田土壤碳饱和效应研究现状,并对未来研究方向进行了展望。Soil organic carbon（ SOC） sequestration in croplands plays a critical role in enhancing soil fertility,global C cycle and associated climate change. However,soils could potentially sequester additional C following changes in management practices until the maximum soil C capacity,or soil C saturation,is achieved. This paper summarizes the current research advances on SOC stabilization mechanisms,C saturation theory and conceptual models,as well as the methods used to estimate C saturation deficit. Current status of carbon saturation researches of China,and perspectives in future studies are also presented.

关 键 词：农田土壤 土壤有机碳 稳定机制 碳饱和 

分 类 号：S155.4[农业科学—土壤学]