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GRAFS Nitrogen (N) flows at Spain national level

Source: R/n_prov_destiny.R
create_n_nat_destiny.Rd

Provides N flows of the Spanish agro-food system on a national level between 1860 and 2020. This dataset is the national equivalent of the provincial GRAFS model and represents Spain as a single system without internal trade between provinces. All production, consumption and soil inputs are aggregated nationally before calculating trade with the outside.

Usage

create_n_nat_destiny(example = FALSE)

Arguments

example

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

Value

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

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

  • 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).

  • province_name: Set to "Spain" for all national-level rows.

Examples

create_n_nat_destiny(example = TRUE)
#> # A tibble: 10 × 8
#>     year item                irrig_cat box   origin destiny   mg_n province_name
#>    <dbl> <chr>               <chr>     <chr> <chr>  <chr>    <dbl> <chr>        
#>  1  1863 Hard Fibres, Other  Irrigated NA    Lives… Cropla… 5.21e1 Spain        
#>  2  2012 Nuts and products   Irrigated NA    People Cropla… 2.12e2 Spain        
#>  3  1955 Pulses, Other and … Irrigated Crop… Cropl… export  5.02e2 Spain        
#>  4  1976 Sorghum and produc… Irrigated Crop… Cropl… popula… 2.47e1 Spain        
#>  5  1901 Pulses, Other and … Irrigated Crop… Cropl… livest… 3.54e1 Spain        
#>  6  1922 Nuts and products   Rainfed   NA    Fixat… Cropla… 2.48e3 Spain        
#>  7  1993 Oats                Irrigated NA    People Cropla… 5.65e0 Spain        
#>  8  1874 Fodder mix          Rainfed   Crop… Cropl… livest… 6.05e2 Spain        
#>  9  1983 Oranges, Mandarines Irrigated NA    Lives… Cropla… 5.29e3 Spain        
#> 10  1997 Barley and products Rainfed   Crop… Cropl… livest… 1.75e4 Spain