土壤可溶性有机氮的研究进展  

Soluble organic nitrogen in soil: A review

作　　者：张亚亚[1,2] 李军[1] 郭颖[1,2] 牛颖权 王艺涵[1,2] 周雯雯[1,2] 

机构地区：[1]天津师范大学天津市水资源与水环境重点实验室,天津300387 [2]天津师范大学城市与环境科学学院,天津300387

出　　处：《生态学杂志》2016年第6期1661-1669,共9页Chinese Journal of Ecology

基　　金：国家重大科学研究计划项目(2013CB956401);国家自然科学基金项目(41172315;41302285和41403082);天津市水资源与水环境重点实验室开放基金资助

摘　　要：可溶性有机氮(SON)是土壤氮素组成中最活跃的组分之一,在陆地生态系统氮循环及养分平衡方面起着重要作用。研究证明,SON既能通过矿化作用转化为矿质氮,也能被植物直接吸收利用。另外,SON流失可能会造成水生生态系统的富营养化,并加剧土壤系统温室气体N_2O的排放。因此,土壤SON受到国内外多学科的广泛关注。本文概述了SON的来源、组成、提取、测试、生态功能及其流失的环境效应,并指出未来有待深入研究的问题,以期为植物吸收利用氮素及生态系统氮循环的研究提供参考依据。Soluble organic nitrogen（ SON） plays a significant role in nitrogen cycle and nutrient balance of terrestrial ecosystems,and is one of the most active constituents of soil nitrogen. SON can not only be transformed into mineral nitrogen through mineralization,but also be absorbed directly by plants. Meanwhile,SON loss may cause eutrophication in aquatic ecosystems,and aggravation of N_2 O emissions in soil ecosystems as well. Therefore,SON has aroused multidisciplinary attention. In order to provide a reference for studying plant uptake and utilization of nitrogen as well as nitrogen cycle in ecosystems,this paper reviewed advances in SON sources,components,extraction,determination,ecological functions,and environmental effects of its loss. In addition,some prospects for further study on SON in soil were also proposed.

关 键 词：土壤 可溶性有机氮 氮循环 环境效应 

分 类 号：S153.6[农业科学—土壤学]