Google Earth engine (GEE) - Global farmland organic soil carbon and nitrogen emissions (1992-2018) data set

Two relevant FAO data sets on drainage organic soils provide the following estimates ：

1. DROSA-A： For agricultural activities （ Farmland and grazing grassland ） Area of organic soil （ ha ）

2. DROSE-A： The carbon of agricultural drainage from organic soils under these land uses (C) And nitrous oxide (N2O) Estimated value （ In gigagrams ）.

The resolution of annual data is 0.0083333 X 0.0083333（ Equator about 1 km ）, Cover 1992 - 2018 Global data for the year .

The estimates in the FAO statistical database follow the Intergovernmental Panel on climate change （IPCC） guide , Tissue sol is used as a representative of organic soil , The annual land cover map is used as a time related component . Besides , Soil characteristics were also used in the analysis 、 Land use and climate information . Carbon emissions can be converted into CO2, Multiply the pixel value by carbon dioxide (CO2) And C The ratio of the molecular weight of (44/12).

Organic soils develop in moist soil ecosystems . They include tropical and Northern peatlands 、 High latitude swamp 、 Ferns and bogs . Organic soils account for only... Of the global land area 3%, But it accounts for% of the total soil carbon 30%, Therefore, it plays an important role in maintaining the carbon balance of the earth . Agriculture is the main cause of drainage of organic soils around the world . The drainage system exposes the organic matter of the organic soil to aerobic conditions , These organic matter will oxidize , Release a large amount of harmful greenhouse gases into the atmosphere (GHG).

DROSA-A and DROSE-A It's in three FAOSTAT Data sets （ Organic soil farming 、 Farmland and grassland ） The basis of national and regional statistics on the spread of drainage organic soils .

Dataset availability

1992-01-01T00:00:00Z - 2018-01-01T00:00:00

Data set provider

Food and agriculture organization

Earth engine fragment

ee.ImageCollection("FAO/GHG/1/DROSE_A") 

Code ：

var dataset = ee.ImageCollection("FAO/GHG/1/DROSE_A");

var visualization = {
  bands: ['croplandc'],
  min: 0.1,
  max: 0.1,
  palette: ['yellow', 'red']
};

Map.setCenter(108.0, -0.4, 6);

Map.addLayer(dataset, visualization, "Cropland C emissions (Annual)");

The resolution of the
927.67 rice

Band

full name	Company	describe
croplandc	Gigagram	Carbon emissions from farmland organic soils
croplandn2o	Gigagram	Organic soil in farmland N2O discharge
grasslandc	Gigagram	Carbon emissions from grassland organic soils
grasslandn2o	Gigagram	Grassland organic soil N2O discharge

Terms of use

Food and Agriculture Organization of the United Nations (FAO) Our task is to collect 、 analysis 、 Explain and communicate with nutrition 、 Information about food and agriculture . In this regard , It publishes a number of thematic databases related to FAO responsibilities , And encourage their use for scientific and research purposes . Consistent with the principles of openness and sharing envisaged under the open data license for statistical databases , And in line with FAO's responsibilities , Greenhouse gas emission data from organic soil agricultural activities as FAO statistical database （ FAO food and agriculture data database ） Part of , It is free to the user community .

 

Citations:

• FAO 2020. Drained organic soils 1990 - 2019. Global, regional and country trends. FAOSTAT Analytical Brief Series No 4, FAO, Rome.

• Conchedda, G. and Tubiello, F. N.: Drainage of organic soils and GHG emissions: Validation with country data, Earth Syst. Sci. Data Discuss. 10.5194/essd-12-3113-2020, 2020