Nitrous oxide emission factors of mineral fertilisers in the UK and Ireland (1999-2019)

Data from 38 experimental sites across the UK and Ireland were collated resulting in 623 separate mineral fertiliser N2O emission factors (EF) estimates derived from field measurements. Data were either i) extracted from published studies in which one aim of the experimentation was to explicitly measure N2O and report EFs after a mineral fertiliser application, or ii) raw data were used from the Agricultural and Environmental Data Archive (AEDA). To find the published data, a survey of literature was conducted using Google Scholar for articles considered ‘recent’ (20 years or fewer), i.e. published after January 1998 and submitted before April 2019. The following search terms and their variations were used: N2O, nitrous oxide, emission factor, mineral fertiliser, ammonium nitrate, urea, nitrification inhibitor, nitrogen use efficiency, agriculture, greenhouse gas, grassland and arable. This search based on keywords was complemented with a search through the literature cited in the articles found and known previous research.

来自英国及爱尔兰38个实验站的データが集約され，基于田间测量，共获得了623个独立的矿物肥料氮氧化物排放系数（EF）的估算值。数据来源包括：i) 从公开发表的研究中提取数据，其中实验目的之一为明确测量氮氧化物并报告矿物肥料施用后的排放系数；ii) 使用来自农业与环境影响数据档案（AEDA）的原始数据。为寻找公开发表的数据，通过Google Scholar进行文献调查，以寻找‘近期’（20年内或更短）的文献，即1998年1月之后发表、2019年4月之前提交的文献。使用了以下关键词及其变体进行搜索：氮氧化物、一氧化二氮、排放系数、矿物肥料、硝酸铵、尿素、硝化抑制剂、氮素利用效率、农业、温室气体、草地和耕地。基于关键词的搜索与对找到的文献中引用的文献及先前已知研究的搜索相辅相成。