农田土壤温室气体排放研究进展

摘要

[Objective] The aim was to overview the emission of greenhouse gases in farmland. [Method] Based on domestic and foreign references, production mechanism, discharging characters and major influential factors of CO2, CH4 and N2O in soils of farmland were overviewed. [Result] Production and discharge of CO2, CH. and N2O played an important role in circulation of carbon and nitrogen in terrestrial ecosystem and constituted a key method for carbon and nitrogen output. It is significant to conduct research on reduction of greenhouse gas and increase of absorption. [Conclusion] The research is beneficial for exploration on discharge rule and influential factors of greenhouse gases, providing theoretical references for reduction of greenhouse gases and study on climate change.%[目的]对农田土壤温室气体排放的研究进展进行综述。[方法]根据近几年国内外相关文献，对农田土壤中CO2、CH4和N2O的产生机理、排放特征及其主要影响因素进行归纳。[结果]土壤中温室气体CO2、CH4和N2O的产生和排放过程，是陆地生态系统碳氮循环的重要过程，是土壤碳氮库的重要输出途径，在全球碳氮循环中起到很重要作用，对其展开研究有利于减少其排放温室气体的量以及增大其吸收温室气体的能力，从而更有效地实现温室气体的减排。[结论]该研究有助于对温室气体排放规律和影响因素的正确了解，从而对温室气体减排以及研究气候变化提供理论依据。