70 Tree species group
The column "SPECIES_GROUP" of the dictionary "d_tree_spec" is coded in dictionary d_species_group.
In case of more tree species on the growth plot the most frequent tree species should be submitted in distinct rows of the INV form.
Less frequent tree species may be neglected or incorporated to one of the main tree species.
In this case, please note respective tree species in the field
It is also possible to distinguish only between broadleaves (use code “99” in respective rows/lines) and conifers (use code “199”).