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GRAFS Nitrogen (N) flows

Source: R/n_prov_destiny.R
create_n_prov_destiny.Rd

Provides N flows of the spanish agro-food system on a provincial level between 1860 and 2020. This dataset is the the base of the GRAFS model and contains data in megagrams of N (MgN) for each year, province, item, origin and destiny. Thereby, the origin column represents where N comes from, which includes N soil inputs, imports and production. The destiny column shows where N goes to, which includes export, population food, population other uses and feed or cropland (in case of N soil inputs). Processed items, residues, woody crops, grazed weeds are taken into account.

Usage

create_n_prov_destiny(example = FALSE)

Arguments

example

If TRUE, return a small example output without downloading remote data. Default is FALSE.

Value

A final tibble containing N flow data by origin and destiny. It includes the following columns:

  • year: The year in which the recorded event occurred.

  • province_name: The Spanish province where the data is from.

  • item: The item which was produced, defined in names_biomass_cb.

  • irrig_cat: Irrigation form (irrigated or rainfed)

  • box: One of the GRAFS model systems: cropland, Semi-natural agroecosystems, Livestock, Fish, or Agro-industry.

  • origin: The origin category of N: Cropland, Semi-natural agroecosystems, Livestock, Fish, Agro-industry, Deposition, Fixation, Synthetic, People (waste water), Livestock (manure).

  • destiny: The destiny category of N: population_food, population_other_uses, livestock_mono, livestock_rum (feed), export, Cropland (for N soil inputs).

  • mg_n: Nitrogen amount in megagrams (Mg).

Examples

create_n_prov_destiny(example = TRUE)
#> # A tibble: 10 × 8
#>     year province_name item               irrig_cat box   origin destiny    mg_n
#>    <dbl> <chr>         <chr>              <chr>     <chr> <chr>  <chr>     <dbl>
#>  1  1865 Huesca        Sugarbeet pulp     NA        Crop… Outsi… livest… 4.52e-3
#>  2  1929 Tarragona     Olives (including… Irrigated Crop… Cropl… export  6.92e+1
#>  3  1955 Albacete      Wheat and products Rainfed   NA    Synth… Cropla… 6.16e+2
#>  4  1957 Gipuzkoa      Wheat and products NA        Crop… Outsi… popula… 8.17e-1
#>  5  1862 Huesca        Grapes and produc… Irrigated Crop… Cropl… popula… 9.39e-2
#>  6  1980 Lleida        Wheat and products Irrigated NA    Fixat… Cropla… 1.71e+2
#>  7  1863 A_Coruna      Millet and produc… Rainfed   NA    Fixat… Cropla… 9.95e-3
#>  8  1987 Lugo          Tomatoes and prod… Irrigated Crop… Cropl… livest… 1.29e-3
#>  9  1950 Castello      Apples and produc… Irrigated Crop… Cropl… livest… 1.96e-2
#> 10  1988 Zaragoza      Grassland          NA        semi… semi_… livest… 1.32e+3