Emissions from drained organic soils

The FAOSTAT domain Drained organic soils consists of nitrous oxide (N2O) and carbon dioxide (CO2) emissions associated with the mineralization and oxidation of the organic matter in organic soils that are drained for agriculture (cropland and grassland). Data are computed geospatially, using the Tier 1 method of the IPCC Guidelines for National greenhouse gas Inventories (IPCC, 2006; 2014) and using the distribution of histosols as a proxy for organic soils. Estimates are available by country and with global coverage, in complete time series for the period 1990–2020. The database is updated annually.The FAOSTAT domain Organic soils disseminates information by country on: activity data (in hectares of organic soils drained for agriculture); and greenhouse gas (GHG) emissions (in kilotonnes of N2O and CO2). 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.’’ Data are available for all countries and territories, for standard FAOSTAT regional aggregations, and for Annex I and non-Annex I country groups.This FAOSTAT domain also disseminates the activity data and emissions data reported by countries to the United Nations Framework Convention on Climate Change (UNFCCC), under ‘Cultivation of organic soils’ for the N2O component and categories ‘Cropland drained organic soils’ and ‘Grassland drained organic soils’ for the CO2. Activity data are sourced from the most recently available GHG National Inventories (NGHGI) or from National Communications. Emission data are sourced directly from the UNFCCC data portal or from Biennial Update Reports (BURs). UNFCCC data are disseminated in FAOSTAT with permission, formalized via a FAO-UNFCCC Memorandum of Understanding.

FAOSTAT领域的排水有机土壤数据集包括与农业（耕地和草地）排水有机土壤中有机物质矿化和氧化相关的氧化亚氮（N2O）和二氧化碳（CO2）排放。数据通过地理空间计算得出，采用《联合国气候变化框架公约（UNFCCC）国家温室气体清单指南》第1级方法（IPCC，2006；2014），并以石质土壤的分布作为有机土壤的代理。估计数据按国家提供，具有全球覆盖范围，涵盖1990年至2020年的完整时间序列。数据库每年更新。FAOSTAT领域的有机土壤通过国家发布以下信息：活动数据（以公顷为单位，指用于农业的排水有机土壤）；以及温室气体（GHG）排放（以千吨计的N2O和CO2）。对于IPCC土地利用分类中的耕地和草地，以及相应的FAO土地利用分类“耕地”和“永久草地和牧场”，分别评估排水及其相关排放。数据适用于所有国家和地区，标准FAOSTAT区域汇总，以及附件I和非附件I国家组。此外，此FAOSTAT领域还发布各国向联合国气候变化框架公约（UNFCCC）报告的活动数据和排放数据，其中N2O成分对应“有机土壤的耕作”，而CO2对应“耕地排水有机土壤”和“草地排水有机土壤”类别。活动数据来源于最新的温室气体国家清单（NGHGI）或国家通信。排放数据直接来源于UNFCCC数据门户或来自双边更新报告（BURs）。在FAOSTAT中发布UNFCCC数据已获得许可，并通过FAO-UNFCCC谅解备忘录正式化。