Data from: Chapter 3- Cropland Agriculture. U.S. Agriculture and Forestry Greenhouse Gas Inventory: 1990-2013

The primary greenhouse gas (GHG) sources for agriculture are nitrous oxide (N2O) emissions from cropped and grazed soils, methane (CH4) emissions from ruminant livestock production and rice cultivation, and CH4 and N2O emissions from managed livestock waste. The management of cropped, grazed, and forestland has helped offset GHG emissions by promoting the biological uptake of carbon dioxide (CO2) through the incorporation of carbon into biomass, wood products, and soils, yielding a U.S. net emissions of 5,803 MMT CO2 eq (million metric tonnes of carbon dioxide equivalents). Net emissions equate to total greenhouse gas emissions minus CO2 sequestration in growing forests, wood products, and soils.

The report 'U.S. Agriculture and Forestry Greenhouse Gas Inventory: 1990-2013' serves to estimate U.S. GHG emissions for the agricultural sector, to quantify uncertainty in emission estimates, and to estimate the potential of agriculture to mitigate U.S. GHG emissions.

This dataset contains tabulated data from the figures and tables presented in Chapter 3, Cropland Agriculture, of the report. Data are presented for Cropland Soils (N2O), Rice Cultivation + Residue Burning (CH4 + N2O), and Agricultural Soil Carbon and Amendments (CO2). Please refer to the report for full descriptions of and notes on the data.

Resources in this dataset:
Resource Title: Figures and Map data from Chapter 3.
File Name: Chapter 3 Figures and Maps.zip

Resource Title: Tables and Appendix Tables from Chapter 3.
File Name: Chapter 3 main and appendix Tables.zip

Resource Title: Data for Map 3-4a.
File Name: Map3-4a.csv
Resource Description: Soil Carbon Changes for Major Land Resource Areas, Tier 3 Crops Conventional Till, Annual Means 2003-2007. Measured in Carbon Dioxide equivalent per hectare (Mg CO2 eq/Ha).

Resource Title: Data for Map 3-4b.
File Name: Map3-4b.csv
Resource Description: Soil Carbon Changes for Major Land Resource Areas, Tier 3 Crops Reduced Till, Annual Means 2003-2007. Measured in Carbon Dioxide equivalent per hectare (Mg CO2 eq/Ha).

Resource Title: Data for Map 3-4c.
File Name: Map3-4c.csv
Resource Description: Soil Carbon Changes for Major Land Resource Areas, Tier 3 Crops No Till, Annual Means 2003-2007. Measured in Carbon Dioxide equivalent per hectare (Mg CO2 eq/Ha).

Resource Title: Table 3-1.
File Name: Table3_1.csv
Resource Description: Estimates and Uncertainties for Cropland Greenhouse Gas Emissions, 2013. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.) and also displayed in percentage units.

Resource Title: Table 3-2.
File Name: Table3_2.csv
Resource Description: Summary of Greenhouse Gas Emissions from Cropland Agriculture, 1990, 1995, 2000, 2005-2013. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.).

Resource Title: Table 3-3.
File Name: Table3_3.csv
Resource Description: Tier 3 Cropland Area by Management Practice, 2013. Measured in millions of hectares (million ha) and also displayed in percentage units.

Resource Title: Table 3-4.
File Name: Table3_4.csv
Resource Description: Nitrous Oxide Emissions from Differently Cropped Soils, 5-year Mean. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.).

Resource Title: Table 3-5.
File Name: Table3_5.csv
Resource Description: Methane from Rice Cultivation from Primary and Ratoon Operations by State, 1990, 1995, 2000, 2005-2013. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.)

Resource Title: Table 3-6.
File Name: Table3_6.csv
Resource Description: Change in Methane Emissions from Rice Cultivation, 1990-2013. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.) and also displayed in percentage units.

Resource Title: Table 3-7.
File Name: Table3_7.csv
Resource Description: Greenhouse Gas Emissions from Agriculture Burning by Crop, 1990, 1995, 2000, 2005–2013. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.).

Resource Title: Table 3-8.
File Name: Table3_8.csv
Resource Description: Agricultural Crop Production. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.)

Resource Title: Data for Figure 3-1a.
File Name: Fig3-1a.csv
Resource Description: U.S. Planted Cropland Area by Rotation Category, 1990-2007. Measured in hectares.

Resource Title: Data for Figure 3-1b.
File Name: Fig3-1b.csv
Resource Description: U.S. Planted Cropland Area by Crop Type, 1995-2013. Measured in hectares.

Resource Title: Data for Figure 3-2.
File Name: Fig3-2.csv
Resource Description: Annual Nitrogen Inputs to Cropland Soil, 1990-2007. Measured in Nfert (Tg N), Nfix (Tg N), Nresidue (Tg N), and omadN (Tg N). One Tg = a trillion grams or a million metric tons.

Resource Title: Data for Figure 3-3.
File Name: Fig3-3.csv
Resource Description: Methane from Rice Cultivation by State, 1990 & 2013. Measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.).

Resource Title: Data for Figure 3-4.
File Name: Fig3-4.csv
Resource Description: Greenhouse Gas Emissions from Field Burning by Crop Type, 2013. Methane and Nitrous Oxide measured in Millions of Metric Tons, Carbon Dioxide Equivalent (MMT CO2 eq.).

Resource Title: Data for Figure 3-5.
File Name: Fig3-5.csv
Resource Description: Change in Commodity Production, 1990-2013. Measured in million metric tons.

Resource Title: Data for Figure 3-6.
File Name: Fig3-6.csv
Resource Description: Percent Change in Commodity Production, 1990-2013. Displayed as percentage.

Resource Title: Data for Figure 3-7.
File Name: Fig3-7.csv
Resource Description: CO2 Emissions and Sequestration Sources from Cropland Soils, 2003-2007. Measured in hectares and Tg Carbon Dioxide Equivalent (Tg CO2 eq). One Tg = a trillion grams or a million metric tons.

Resource Title: Data for Map 3-1a.
File Name: Map3-1a.csv
Resource Description: Total Nitrous Oxide (Direct and Indirect) for Major Land Resource Areas, Tier 3 Crops, Annual Means 2003–2007. Measured in hectares and Gg Carbon Dioxide Equivalent (Gg CO2 eq). Gg = total greenhouse gas emissions.

Resource Title: Data for Map 3-1b.
File Name: Map3-1b.csv
Resource Description: Unit Area Nitrous Oxide (Direct and Indirect) for Major Land Resource Areas, Tier 3 Crops, Annual Means 2003–2007. Measured in hectares and Mg Carbon Dioxide equivalent in hectares (Mg CO2 eq/Ha).

Resource Title: Data for Map 3-3a.
File Name: Map3-3a.csv
Resource Description: Soil Carbon Changes for Major Land Resource Areas, Tier 3 Crops, Annual Means 2003-2007. Measured in hectares (ha) and Carbon Dioxide equivalent (Gg CO2 eq). Gg = total greenhouse gas emissions.

Resource Title: Data for Map 3-3b.
File Name: Map3-3b.csv
Resource Description: Unit Area Soil Carbon Changes for Major Land Resource Areas, Tier 3 Crops, Annual Means 2003–2007. Measured in hectares (ha) and Carbon Dioxide equivalent per hectare (Mg CO2 eq/Ha).

Resource Title: Data Dictionary for Chapter 3 tables.
File Name: DataDictionary_Chapter3.csv
Resource Description: Defines sources, GHG category, units etc. for tables, supporting figures, and maps presented in Chapter 3.