年次データは 0.0083333 X 0.0083333 の解像度（赤道付近で約 1 km）で利用でき、1992 年から 2018 年までの期間をグローバルにカバーしています。
FAOSTAT の推定値は、気候変動に関する政府間パネル（IPCC）のガイドラインに沿っており、有機土壌の存在の代理としてヒストソルを使用し、時間依存コンポーネントとして年間の土地被覆マップを使用しています。また、土壌の特性、土地利用、気候に関する情報も分析に適用されます。炭素排出量を CO2 に変換するには、ピクセル値を二酸化炭素（CO2）の分子量と C の分子量の比率（44/12）で乗算します。
[null,null,[],[[["\u003cp\u003eThe FAO Drained Organic Soils Emissions (DROSE-A) dataset provides annual estimates of carbon (C) and nitrous oxide (N2O) emissions from the agricultural drainage of organic soils globally.\u003c/p\u003e\n"],["\u003cp\u003eData is available at ~1km resolution from 1992 to 2018 and includes separate estimates for emissions from cropland and grassland organic soils.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset uses IPCC guidelines and histosols as a proxy for the presence of organic soils to calculate emissions, highlighting the impact of agricultural drainage on greenhouse gas release.\u003c/p\u003e\n"],["\u003cp\u003eOrganic soils, though covering only 3% of land area, store up to 30% of soil carbon, making their drainage a significant contributor to climate change.\u003c/p\u003e\n"],["\u003cp\u003eFAOSTAT utilizes DROSA-A and DROSE-A for broader country and regional statistics related to drained organic soils and their environmental impact.\u003c/p\u003e\n"]]],[],null,["# Drained Organic Soils Emissions (Annual) 1.0\n\nDataset Availability\n: 1992-01-01T00:00:00Z--2018-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [FAO UN](http://fao.org/economic/ess/environment/data/organic-soils/la/)\n\nCadence\n: 1 Year\n\nTags\n:\n[agriculture](/earth-engine/datasets/tags/agriculture) [climate](/earth-engine/datasets/tags/climate) [climate-change](/earth-engine/datasets/tags/climate-change) [emissions](/earth-engine/datasets/tags/emissions) [fao](/earth-engine/datasets/tags/fao) [ghg](/earth-engine/datasets/tags/ghg) [organic-soils](/earth-engine/datasets/tags/organic-soils) \n\n#### Description\n\nThe two related FAO datasets on Drained Organic Soils provide estimates of:\n\n1. DROSA-A: area of Organic Soils (in hectares) drained for agricultural\n activities (cropland and grazed grassland)\n\n2. DROSE-A: carbon (C) and nitrous oxide (N2O) estimates (in gigagrams) from\n the agricultural drainage of organic soils under these land uses.\n\nAnnual data are available at 0.0083333 X 0.0083333 resolution (\\~1 km at the\nequator), with global coverage for the period 1992 - 2018.\n\nFAOSTAT estimates follow the Intergovernmental Panel on Climate Change\nGuidelines (IPCC) and use histosols as proxy for the presence of organic\nsoils and annual land cover maps as time- dependent component. Additionally,\nsoils characteristics, land use, and climate information are applied in the\nanalysis. The carbon emissions can be converted to CO2, multiplying pixel\nvalues by the ratio of the molecular weight of carbon dioxide (CO2) to that\nof C (44/12).\n\nOrganic soils develop in wet soil ecosystems. They include tropical and\nboreal peatlands, high-latitude bogs, ferns, and mires. Organic soils cover\nglobally a mere 3 percent of the terrestrial land area but represent up to\n30 percent of the total soil carbon, thus playing an important role in\nmaintaining the earth's carbon balance. Agriculture is a major cause of\ndrainage of organic soils around the world. Drainage exposes to aerobic\nconditions the organic matter of organic soils that oxidizes releasing large\namounts of harmful greenhouse gases (GHG) to the atmosphere.\n\nDROSA-A and DROSE-A are the basis for country and regional statistics on\ndrained organic soils disseminated in three FAOSTAT datasets (Cultivation of\nOrganic Soils; Cropland; and Grassland).\n\n### Bands\n\n\n**Pixel Size**\n\n927.67 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|----------------|-------|------------|--------------------------------------------|\n| `croplandc` | Gg | meters | C emissions from cropland organic soils |\n| `croplandn2o` | Gg | meters | N2O emissions from cropland organic soils |\n| `grasslandc` | Gg | meters | C emissions from grassland organic soils |\n| `grasslandn2o` | Gg | meters | N2O emissions from grassland organic soils |\n\n### Terms of Use\n\n**Terms of Use**\n\nThe Food and Agriculture Organization of the United Nations (FAO) is\nmandated to collect, analyze, interpret, and disseminate information related\nto nutrition, food, and agriculture. In this regard, it publishes a number\nof databases on topics related to FAO's mandate, and encourages the use of\nthem for scientific and research purposes. Consistent with the principles of\nopenness and sharing envisioned under the Open Data Licensing For\nStatistical Databases, and consistent with the mandate of FAO, data on GHG\nemissions from agriculture activities on organic soils as part of FAOSTAT -\nFAO's database on Food and Agriculture data, is available free to the user\ncommunity.\n\n### Citations\n\nCitations:\n\n- FAO 2020. Drained organic soils 1990 - 2019. Global, regional and country\n trends. FAOSTAT Analytical Brief Series No 4, FAO, Rome.\n \u003chttp://www.fao.org/3/cb0489en/cb0489en.pdf\u003e\n- Conchedda, G. and Tubiello, F. N.: Drainage of organic soils and GHG\n emissions: Validation with country data, Earth Syst. Sci. Data Discuss.\n [doi:10.5194/essd-12-3113-2020](https://doi.org/10.5194/essd-12-3113-2020), 2020\n\n### DOIs\n\n- \u003chttps://doi.org/10.5194/essd-12-3113-2020\u003e\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('FAO/GHG/1/DROSE_A');\n\nvar visualization = {\n bands: ['croplandc'],\n min: 0,\n max: 1,\n palette: ['yellow', 'red']\n};\n\nMap.setCenter(108.0, -0.4, 6);\n\nMap.addLayer(dataset, visualization, 'Cropland C emissions (Annual)');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/FAO/FAO_GHG_1_DROSE_A) \n[Drained Organic Soils Emissions (Annual) 1.0](/earth-engine/datasets/catalog/FAO_GHG_1_DROSE_A) \nThe two related FAO datasets on Drained Organic Soils provide estimates of: DROSA-A: area of Organic Soils (in hectares) drained for agricultural activities (cropland and grazed grassland) DROSE-A: carbon (C) and nitrous oxide (N2O) estimates (in gigagrams) from the agricultural drainage of organic soils under these land uses. Annual data ... \nFAO/GHG/1/DROSE_A, agriculture,climate,climate-change,emissions,fao,ghg,organic-soils \n1992-01-01T00:00:00Z/2018-01-01T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5194/essd-12-3113-2020](https://doi.org/http://fao.org/economic/ess/environment/data/organic-soils/la/)\n- [https://doi.org/10.5194/essd-12-3113-2020](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/FAO_GHG_1_DROSE_A)"]]
