This function returns a data frame of species codes and their corresponding species names
used in the RSYC model set. It arranges species codes alphabetically, but promotes the
meta-categories "Generic", "Broadleaf", and "Coniferous" to the top of the list.
Examples
species_codes()
#> # A tibble: 30 × 2
#> SpeciesCode SpeciesName
#> <fct> <chr>
#> 1 Generic Generic
#> 2 Broadleaf Broadleaf
#> 3 Coniferous Coniferous
#> 4 ABIE.AMA Amabilis fir
#> 5 ABIE.BAL Balsam fir
#> 6 ABIE.LAS Subalpine fir
#> 7 ACER.RUB Red maple
#> 8 ACER.SAH Sugar maple
#> 9 BETU.ALL Yellow birch
#> 10 BETU.PAP White birch
#> # ℹ 20 more rows