福建省N2 O排放清单及其特征分析

摘要

通过核算福建省1980-2013年N2 O的排放清单，分析了N2 O的排放特征.结果表明：1980-2013年，福建省N2 O总排放量从19.2 Gg增加到37.6 Gg；在N2 O的排放源中，按照排放贡献比例从大到小排列依次为农用地、畜禽粪便管理、废水处理和能源消费活动；而按照增长速度从大到小排列依次为能源消费活动、废水处理、农用地和畜禽粪便管理.表明减少农田氮肥施用量是减少福建省N2 O排放的关键.%Conducting emission inventory and exploring characteristics of N2 O, a powerful greenhouse gas ( GHG) , is of great sig-nificance for building mitigative strategy and plan. In this study, emission inventory of N2 O was conducted basing on calculation guidelines for GHG. It elaborated main emission sources and temporal variations in Fujian Province from 1980 to 2013, based on which emission characteristics of N2 O was interpreted. The results showed that N2 O emission increased from 19.2 Gg to 37.6 Gg from 1980 to 2013, with the largest contribution from agricultural land, followed by livestock manure management, wastewater treatment and energy consumption. But when it came to the increment rate, energy consumption rose to the first, followed by wastewater treat-ment, agricultural land and livestock manure management. Reducing application of nitrogen fertilizer was the key to reduce N2 O e-mission in Fujian. Other feasible measures involved optimizing the application techniques for nitrogen fertilizer, changing from nitro-gen fertilizer to nitrification inhibitor.