湿地土壤N2O排放研究进展

湿地作为一种重要而独特的生态系统，在全球变化过程中起着重要作用，是温室气体重要的源、汇和转换器。近年来，湿地垦殖、氮沉降等造成湿地退化、萎缩，湿地功能也因此遭到破坏，这必然会引起湿地温室气体排放的变化。N2O作为备受关注的温室气体之一，许多国内外学者对湿地N2O排放进行了深入研究，并取得了大量研究成果。综述了国内外湿地N2O排放的研究现状及其产生机制，总结了湿地N2O排放的影响因素以及N2O排放的模型估计，并对今后湿地N2O排放研究提出了展望。

Advances in Studies of N2O Emission in Wetland Soils

As an important and special ecosystem,wetland plays an important role in global climate change,and is the important source,sink and convertor of greenhouse gases.Recently,wetland has degraded and diminished seriously as wetland cultivation and nitrogen deposition,which result in function reduction of wetland,and this must change wetland greenhouse gas emission.N2O is one of greenhouse gases receiving many attentions,and plentiful research achievements on wetland N_2O emission have been obtained from both domestic and overseas studies.In this paper,research status and mechanism of N2O emission were reviewed,the emission influencing factors and model evaluation were summarized,and research prospects in the future were put forward finally.