SNFI4 tree volume coefficients — snfi4_volume

Allometric equation coefficients for tree volume and increment from the 4th Spanish National Forest Inventory (SNFI4/IFN4), as documented by MITECO.

Usage

snfi4_volume_coefficients

A tibble with 20,925 rows and 15 variables:

Codigo_provincia: Integer. Province numeric code.
Nombre_provincia: Character. Province name.
Codigo_especie: Integer. Species numeric code.
Especie: Character. Species scientific name.
Parametro: Character. Volume component: VCC (merchantable volume with bark), VSC (merchantable volume without bark), IAVC (annual volume increment with bark), or VLE (coarse firewood volume).
F.c.: Integer. Tree quality class (calidad del árbol), from 1 (healthy and straight tree) to 6 (dead tree).
Modelo: Integer. Equation model index.
a, b, c, d, p, q, r: Numeric. Equation coefficients (NA where not applicable).
D.n.m.: Character. Mean plot diameter metadata (diámetro normal medio), required for IAVC equation model 13.