Package index • silviculture

Predictions

Functions for estimating forest variables from models or equations

silv_predict_biomass(): Calculate Tree Biomass

silv_predict_height(): Estimates tree height from DBH

silv_biomass() deprecated: Calculate Tree Biomass

Models and equations

Models and equations used in silv_predict_* functions

eq_hd_vazquez_veloso_2025(): Estimates tree height from DBH

eq_biomass_dieguez_aranda_2009(): Biomass equations for Galician species

eq_biomass_manrique_2017(): Biomass equations two Quercus species

eq_biomass_montero_2005(): Biomass equations for Spanish species

eq_biomass_ruiz_peinado_2011(): Biomass equations for Spanish softwood species

eq_biomass_ruiz_peinado_2012(): Biomass equations for Spanish hardwood species

Tree level metrics

Metrics to be calculated tree by tree

silv_tree_dclass(): Classify diameters in classes

silv_tree_basal_area(): Calculates Basal Area

silv_tree_volume(): Calculate Tree Volume

silv_basal_area() deprecated: Calculates Basal Area

silv_diametric_class() deprecated: Classify diameters in classes

silv_volume() deprecated: Calculate Tree Volume

Stand level metrics

Metrics to be calculated per stand or plot of trees

silv_stand_basal_area(): Calculates Basal Area

silv_stand_dominant_diameter(): Calculates the dominant diameter

silv_stand_dominant_height(): Calculates the dominant height

silv_stand_lorey_height(): Calculates Lorey's Height

silv_stand_qmean_diameter(): Calculates the quadratic mean diameter (QMD)

silv_summary(): Calculates a bunch of forest metrics

silv_dominant_height() deprecated: Calculates the dominant height

silv_lorey_height() deprecated: Calculates Lorey's Height

silv_ntrees_ha() deprecated: Calculates number of trees per hectare

silv_sqrmean_diameter() deprecated: Calculates the quadratic mean diameter (QMD)

Stand density metrics

Stand density and competition metrics

silv_density_ntrees_ha(): Calculates number of trees per hectare

silv_density_hart(): Hart or Hart-Becking spacing index

silv_density_sdi(): Calculates the Stand Density Index

silv_spacing_index() deprecated: Hart or Hart-Becking spacing index

silv_ntrees_ha() deprecated: Calculates number of trees per hectare

Inventory Sample Size

Calculate and explore forest inventory sample size

silv_sample_size_simple(): Calculates sample size for a simple random sampling (SRS)

silv_sample_size_stratified(): Calculates sample size for a stratified sampling

silv_sample_size() deprecated: Calculates sample size for a random sampling inventory

Treatments

Functions for forest treatments

silv_treatment_thinning(): Calculate Forestry Thinning Schemes

LiDAR metrics

Extract and calculate forest structural metrics using LiDAR data

lid_fcov(): Calculate Forest Fraction Cover from LiDAR Data

lid_lhdi(): LiDAR-derived Height Diversity Index (LHDI)

Data

Datasets included in the package

biomass_models: Biomass models

inventory_samples: Forest inventory samples

Objects

S7 methods

plot(): Plot an object