湿地土壤碳循环研究进展

湿地是地球上碳储量最大的陆地生态系统,其碳储量约占陆地生态圈总碳量的20%.湿地碳的90%以上储存在湿地土壤中.湿地土壤碳的循环对全球大气碳的收支平衡以及全球气候变化可能产生重大影响.概述了湿地土壤碳素变化与温室气体排放的关系、湿地土壤碳素循环过程及其影响因素等方面的研究进展,提出了进一步研究的问题.

Advance in Research on Carbon Cycling in Wetland Soils

Wetlands have the largest carbon storage among terrestrial ecosystems on the earth, and are estimated to contain 20% of carbon in global terrestrial ecosystems.Over 90% of carbon in wetlands was stored in wetland soils. Soil carbon cycling in wetlands largely affected global carbon cycling and also possibly global climatic changes. The interactions between carbon changes in wetland soils and responses as a sink or source of CO_2 in the atmosphere were discussed.The progresses in carbon cycling process with the main factors were viewed. Future studies on the carbon cycling in wetland soils were briefly addressed.