土壤溶解性有机碳(DOC)的影响因子及生态效应

土壤溶解性有机碳(DOC)是陆地生态系统中极为活跃的有机组分,是土壤圈层与相关圈层(如生物圈、大气圈、水圈和岩石圈等)发生物质交换的重要形式。影响土壤中物质的溶解、吸附、解吸、吸收、迁移乃至生物毒性等行为之外,对温室气体CH4的排放、水体水质的污染、岩石圈的风化等的影响也不可忽视。本文以陆地生态系统的中的DOC为主体,探讨了DOC的生态环境意义及其对大气、水体和岩石圈的影响以及DOC对土壤管理措施的响应。

Influencing Factors and Ecological Effects of Dissolved Organic Carbon in Soil

It is clearly indicated that active organic carbon is of important active chemical components in soils.Researchers widely believe that the dissolution,desorption,transport and some other processes of pollutants are enhanced predominately by the active organic carbon compounds,which have strong influence on soil nutrients,environment,atmosphere and water quality.Hence,it is one of the maine focuses for researchers to investigate the components in soil.Therefore,the sources,components,influencing factors,and environmental effects were reviewed here and their ecological effects were put forward.