Goor morning,
I have created a database with a 4 species, with 5 different heights, 5 different dbhs and 5 land uses.
Example with Picea abies:
ID ESPECIE Altura DBH LANDUSE
1 Picea abies 5 5 Park
2 Picea abies 5 5 Institutional
3 Picea abies 5 5 Multi family residential
4 Picea abies 5 5 ...