FAOSTAT GHG Emissions from Organic Soils

The FAOSTAT domain “Cultivation of Organic soils” contains estimates of nitrous oxide (N2O) emissions associated with the drainage of organic soils – using histosols as proxy – for agriculture. Data are computed geospatially, using the Tier 1 default factors of the Intergovernmental Panel on Climate Change (IPCC, 2006). Estimates are available by country, by FAOSTAT regional aggregation and special group, including the Annex I and Non-Annex I Parties to the United Nations Framework Convention on Climate Change (UNFCCC), and with global coverage for the period 1990–2019, with estimates for 2030 and 2050.

The FAOSTAT domain “Cultivation of Organic soils” disseminates N2O emissions, implied emission factors and underlying activity data, i.e. area (in ha) of organic soils drained for agriculture. Drainage and associated emissions are assessed separately for IPCC land use categories cropland and grassland, corresponding to FAO land use categories ‘’cropland’’ and ‘’permanent meadows and pastures.’’ GHG estimates are available in N2O and in CO2 equivalent (CO2eq). Conversion to CO2eq is made via Global Warming Potentials (GWP) coefficients. Results are disseminated separately for three different options currently in use in reporting, namely GWPs from: a) IPCC Second Assessment Report (SAR)(IPCC, 1996); b) IPCC Fourth Assessment Report (AR4) (IPCC, 2007); and c) IPCC Fifth Assessment Report (AR5)(IPCC, 2014). The original FAOSTAT domains can be found here:

Cultivation of Organic Soils: http://www.fao.org/faostat/en/#data/GV

Drained Organic Soils on cropland: http://www.fao.org/faostat/en/#data/GC and

Drained Organic Soils on grassland: http://www.fao.org/faostat/en/#data/GG

The FAOSTAT emissions estimates may not coincide with GHG data reported by member countries to relevant international reporting processes. The aim of this domain is to provide a global reference database for assessing regional and global trends and in support of national data quality/data assurance processes.

联合国粮食及农业组织统计数据库（FAOSTAT）的“有机土壤耕作”领域数据集，涵盖农业用有机土壤排水相关的一氧化二氮（N₂O）排放估算——以有机土（histosols）作为替代指标。数据通过地理空间计算生成，采用政府间气候变化专门委员会（IPCC, 2006）制定的一级默认系数。

估算数据可按国家、FAOSTAT区域聚合组及特殊分组提供结果，覆盖《联合国气候变化框架公约》（UNFCCC）附件一缔约方与非附件一缔约方，包含1990-2019年全球数据，并提供2030年与2050年的估算值。

“有机土壤耕作”数据集同时发布一氧化二氮排放量、隐含排放系数及基础活动数据，即农业用途已排水有机土壤的面积（单位：公顷）。针对IPCC土地利用分类中的耕地与草地（对应FAO土地利用分类的“耕地”及“永久草地与牧场”），分别评估排水过程及相关排放。温室气体（GHG）估算结果以一氧化二氮及二氧化碳当量（CO₂eq）形式呈现，转换过程基于全球增温潜势（GWP）系数。当前国际报告中常用三类全球增温潜势方案，数据集将分别按以下方案发布结果：a) IPCC第二次评估报告（SAR，IPCC, 1996）；b) IPCC第四次评估报告（AR4，IPCC, 2007）；c) IPCC第五次评估报告（AR5，IPCC, 2014）。原始FAOSTAT数据集可通过以下链接获取：
有机土壤耕作：http://www.fao.org/faostat/en/#data/GV
耕地排水有机土壤：http://www.fao.org/faostat/en/#data/GC
草地排水有机土壤：http://www.fao.org/faostat/en/#data/GG

FAOSTAT的排放估算值或与成员国提交至相关国际报告流程的温室气体数据存在差异。本领域数据集旨在构建全球参考数据库，用于评估区域与全球趋势，并支持各国的数据质量保障工作。