湿地甲烷排放研究若干问题的探讨

A review on methane emission from wetlands.

甲烷是大气中最重要的温室气体之一 ,天然湿地是全球目前已知的最大排放源 ,每年向大气中排放的CH4约占全球CH4排放量的 2 1 %。本文就天然湿地甲烷排放研究的若干问题 ,包括研究方法、影响因素以及排放通量的时空变异性进行了探讨 ,最后对有关湿地甲烷排放模型进行了简单介绍 ,并对今后的研究方向提出了几点建议。

Of all the greenhouse gases present in the atmosphere,methane has assumed considerable significance in recent years due to its impact on the earth's climate and stratospheric ozone chemistry.Natural wetlands are major source of methane,emitting approximately 21% of total global emissions to the atmosphere.In this paper,some questions about methane research were discussed,including measurement methods,factors and temporal and spatial variation of methane emission fluxes from wetlands.Several emission models were introduced briefly and various suggestions for future research were put forward.