Identifies production items that appear both as primary crop products and as harvested-area items, requiring special treatment to avoid double-counting in production and biomass accounting.
Format
A tibble where each row corresponds to one item pair with a double-counting relationship. It contains the following columns:
Item_area: Name of the item as it appears in harvested-area statistics (e.g.,"Seed cotton, unginned").item_prod: Name of the derived production item (e.g.,"Cotton lint, ginned","Cotton seed").item_prod_code: Numeric FAOSTAT production code of the derived item.Multi_type: Classification of the double-counting type:"Primary": The area item is the primary crop; product is a direct output."Primary_area": Area is recorded under a primary aggregate crop name."Multi": Multiple products share the same harvested area."Multi_area": Multiple products share a recorded area aggregate.
Examples
head(primary_double)
#> # A tibble: 6 × 4
#> Item_area item_prod item_prod_code Multi_type
#> <chr> <chr> <dbl> <chr>
#> 1 Seed cotton, unginned Cotton lint, ginned 767 Primary
#> 2 Seed cotton, unginned Cotton seed 329 Primary
#> 3 NA Seed cotton, unginned 328 Primary_area
#> 4 Oil palm fruit Palm oil 257 Primary
#> 5 Oil palm fruit Palm kernels 256 Primary
#> 6 NA Oil palm fruit 254 Primary_area
