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Biomass coefficients for crops and livestock products

Source: R/datasets.R
biomass_coefs.Rd

Provides dry-matter, nutrient, and energy conversion coefficients for agricultural products and residues. Used to convert fresh-matter production quantities into biomass flows, nutrient budgets, and energy content.

Usage

biomass_coefs

Format

A tibble where each row corresponds to one product or item. It contains 68 columns:

  • Code: Item code (character), corresponding to FAOSTAT production codes.

  • Name_biomass: Item name as used in biomass accounting.

  • Equiv: Reference equivalence item used when coefficients are borrowed from another similar commodity (e.g., "Wheat" for oats).

  • Category: Broad commodity category (e.g., "Cereals, other", "Barley", "Vegetables").

  • BG_Biomass_kgDM_ha: Below-ground biomass in kg dry matter per hectare.

  • Root_Shoot_ratio: Ratio of root to aerial biomass (dimensionless).

  • Product_kgDM_kgFM: Product dry-matter content in kg DM per kg fresh matter.

  • Residue_kgDM_kgFM: Residue dry-matter content in kg DM per kg fresh matter of product.

  • Conventional_kgDM_ha: Conventional yield in kg dry matter per hectare.

  • Organic_kgDM_ha: Organic yield in kg dry matter per hectare.

  • GE_product_edible_portion_MJ_kgFM: Gross energy of the edible portion in MJ per kg fresh matter.

  • GE_product_residue_MJ_kgFM: Gross energy of the residue in MJ per kg fresh matter (may be character due to source formatting).

  • GE_product_MJ_kgFM: Gross energy of the whole product in MJ per kg fresh matter.

  • GE_residue_MJ_kg: Gross energy of the residue in MJ per kg.

  • kg_product_kg_aerial_biomass: Fraction of aerial biomass that is product (harvest index, kg/kg).

  • kg_residue_kg_aerial_biomass_FM: Fraction of aerial biomass that is residue, on fresh matter basis.

  • kg_residue_kg_product_FM: Ratio of residue to product on fresh matter basis.

  • Carcass_to_LW: Carcass-to-live-weight ratio (livestock only; logical placeholder for crop items).

  • Edible_portion: Edible fraction of the product (kg edible / kg fresh matter).

  • N_kgN_kgFM: Nitrogen content in kg N per kg fresh matter.

  • Lipids_g_kgFM: Lipid content in g per kg fresh matter.

  • Carbohydrates_g_kgFM: Carbohydrate content in g per kg fresh matter.

  • Calcium_mg_kgFM: Calcium content in mg per kg fresh matter.

  • VitaminA_microg_kgFM: Vitamin A content in micrograms per kg fresh matter.

  • Edible_kgDM_kgFM: Edible dry matter in kg per kg fresh matter.

  • Edible_kgC_kgFM: Edible carbon in kg C per kg fresh matter.

  • Edible_N_kgFM: Edible nitrogen in kg N per kg fresh matter.

  • Edible_kgP_kgFM: Edible phosphorus in kg P per kg fresh matter.

  • Edible_K_kgFM: Edible potassium in kg K per kg fresh matter.

  • NonEdible_kgDM_kgFM: Non-edible dry matter in kg per kg fresh matter.

  • NonEdible_kgC_kgFM: Non-edible carbon in kg C per kg fresh matter.

  • NonEdible_kgN_kgFM: Non-edible nitrogen in kg N per kg fresh matter.

  • NonEdible_kgP_kgFM: Non-edible phosphorus in kg P per kg fresh matter.

  • NonEdible_kgK_kgFM: Non-edible potassium in kg K per kg fresh matter.

  • Product_kgN_kgDM: Nitrogen content of product in kg N per kg dry matter.

  • Product_kgP_kgDM: Phosphorus content of product in kg P per kg dry matter.

  • Product_kgK_kgDM: Potassium content of product in kg K per kg dry matter.

  • Product_kgC_kgDM: Carbon content of product in kg C per kg dry matter.

  • Residue_kgN_kgDM: Nitrogen content of residue in kg N per kg dry matter.

  • Residue_kgP_kgDM: Phosphorus content of residue in kg P per kg dry matter.

  • Residue_kgK_kgDM: Potassium content of residue in kg K per kg dry matter.

  • Residue_kgC_kgDM: Carbon content of residue in kg C per kg dry matter.

  • Residue_humified_kgC_kgC: Humification coefficient of residue carbon (fraction of residue C stabilised as soil organic matter).

  • MgDM_m3: Megagrams dry matter per cubic metre (bulk density proxy).

  • Root_kgC_kgDM: Carbon content of roots in kg C per kg root dry matter.

  • Root_humified_kgC_kgC: Humification coefficient for root carbon.

  • Root_mass_kgC_kgDM: Root carbon mass in kg C per kg crop dry matter.

  • Rhizodeposits_mass_kgC_kgDM: Rhizodeposit carbon in kg C per kg crop dry matter.

  • Residue_C_N: Carbon-to-nitrogen ratio of the residue.

  • Root_kgN_kgDM: Nitrogen content of roots in kg N per kg root dry matter.

  • GE_Roots_MJ_kgDM: Gross energy of roots in MJ per kg dry matter.

  • Rhizodeposits_N_kgN_kgRootN: Rhizodeposit nitrogen as a fraction of root nitrogen.

  • Fiber_g_kgFM: Dietary fibre content in g per kg fresh matter.

  • SFA_g_kgFM: Saturated fatty acid content in g per kg fresh matter.

  • MUFA_g_kgFM: Monounsaturated fatty acid content in g per kg fresh matter.

  • PUFA_g_kgFM: Polyunsaturated fatty acid content in g per kg fresh matter.

  • PUFA_n3_g_kgFM: Omega-3 PUFA content in g per kg fresh matter.

  • Iron_mg_kgFM: Iron content in mg per kg fresh matter.

  • Zinc_mg_kgFM: Zinc content in mg per kg fresh matter.

  • Magnesium_mg_kgFM: Magnesium content in mg per kg fresh matter.

  • Cadmium_microg_kgFM: Cadmium content in micrograms per kg fresh matter.

  • VitaminB12_microg_kgFM: Vitamin B12 content in micrograms per kg fresh matter.

  • VitaminD_microg_kgFM: Vitamin D content in micrograms per kg fresh matter.

  • Folate_microg_kgFM: Folate content in micrograms per kg fresh matter.

  • VitaminC_mg_kgFM: Vitamin C content in mg per kg fresh matter.

  • VitaminE_mg_kgFM: Vitamin E content in mg per kg fresh matter.

  • Flavonoids_mg_kgFM: Flavonoid content in mg per kg fresh matter.

  • Carotenoids_mg_kgFM: Carotenoid content in mg per kg fresh matter.

Source

Compiled from multiple sources including FAO food composition data, crop physiology literature, and IPCC Tier 1 coefficients.

Examples

head(biomass_coefs)
#> # A tibble: 6 × 68
#>   Code  Name_biomass Equiv Category       BG_Biomass_kgDM_ha Root_Shoot_ratio
#>   <chr> <chr>        <chr> <chr>                       <dbl>            <dbl>
#> 1 75    Oats         Wheat Cereals, other              3393.           0.402 
#> 2 44    Barley       Wheat Barley                      1544.           0.210 
#> 3 27    Rice         NA    Rice                          NA            0.22  
#> 4 79    Millet       Maize Cereals, other                NA            0.25  
#> 5 71    Rye          NA    Cereals, other                NA            0.14  
#> 6 83    Sorghum      Maize Cereals, other                NA            0.0862
#> # ℹ 62 more variables: Product_kgDM_kgFM <dbl>, Residue_kgDM_kgFM <dbl>,
#> #   Conventional_kgDM_ha <dbl>, Organic_kgDM_ha <dbl>,
#> #   GE_product_edible_portion_MJ_kgFM <dbl>, GE_product_residue_MJ_kgFM <dbl>,
#> #   GE_product_MJ_kgFM <dbl>, GE_residue_MJ_kg <dbl>,
#> #   kg_product_kg_aerial_biomass <dbl>, kg_residue_kg_aerial_biomass_FM <dbl>,
#> #   kg_residue_kg_product_FM <dbl>, Carcass_to_LW <lgl>, Edible_portion <dbl>,
#> #   N_kgN_kgFM <dbl>, Lipids_g_kgFM <dbl>, Carbohydrates_g_kgFM <dbl>, …