Nitrous oxide (N2 O), ammonia (NH3 ) and methane (CH4 ) emissions from the manure management chain of livestock production systems are important contributors to greenhouse gases (GHG) and NH3 emitted by human activities. Several studies have evaluated manure-related emissions and associated key variables at regional, national or continental scales. However, there have been few studies focusing on the drivers of these emissions using a global dataset. An international project was created (DATAMAN) to develop a global database on GHG and NH3 emissions from the manure management chain (housing, storage and field), to identify key variables influencing emissions, and ultimately to refine emission factors (EFs) for future national GHG inventories and NH3 emission reporting. This paper describes the "field" database that focuses on N2 O and NH3 EFs from land-applied manure and excreta deposited by grazing livestock. We collated relevant information (EFs, manure characteristics, soil properties and climatic conditions) from published peer-reviewed research, conference papers and existing databases. The database, containing 5,632 observations compiled from 184 studies, was relatively evenly split between N2 O and NH3 (56% and 44% of the EF values, respectively). The N2 O data were derived from studies conducted in 21 countries on five continents, with New Zealand, the UK, Kenya and Brazil representing 86% of the data. The NH3 data originated from studies conducted in 17 countries on four continents, with the UK, Denmark, Canada and the Netherlands representing 79% of the data. Wet temperate climates represented 90% of the total database. The DATAMAN field database is available online at http://www.dataman.co.nz This article is protected by copyright. All rights reserved.

中文翻译：

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DATAMAN：牲畜和土地施用粪便沉积的排泄物的一氧化二氮和氨排放因子的全球数据库

来自畜牧生产系统粪便管理链的一氧化二氮 (N2 O)、氨 (NH3) 和甲烷 (CH4) 排放是人类活动排放的温室气体 (GHG) 和 NH3 的重要贡献者。多项研究评估了区域、国家或大陆范围内与粪便相关的排放量和相关的关键变量。然而，很少有研究使用全球数据集来关注这些排放的驱动因素。创建了一个国际项目 (DATAMAN) 来开发一个关于粪便管理链（房屋、储存和田间）中温室气体和 NH3 排放的全球数据库，以确定影响排放的关键变量，并最终为未来的国家改进排放因子 (EF)。温室气体清单和 NH3 排放报告。本文介绍了“领域” 数据库侧重于来自土地施用的粪便和放牧牲畜沉积的排泄物的 N2 O 和 NH3 EF。我们从已发表的同行评审研究、会议论文和现有数据库中整理了相关信息（EF、粪便特征、土壤特性和气候条件）。该数据库包含从 184 项研究汇编的 5,632 条观察结果，在 N2 O 和 NH3 之间相对均匀地分配（分别为 EF 值的 56% 和 44%）。N2 O 数据来自在五大洲 21 个国家进行的研究，其中新西兰、英国、肯尼亚和巴西占数据的 86%。NH3 数据来源于在四大洲 17 个国家进行的研究，其中英国、丹麦、加拿大和荷兰占了 79% 的数据。湿温带气候占总数据库的 90%。DATAMAN 现场数据库可在 http://www.dataman.co.nz 在线获得。本文受版权保护。版权所有。