add_tropical_biomass: Add biomass using allometric equations for tropical trees.

Description Usage Arguments Value References See Also Examples

Description

This function wraps a number of functions from the BIOMASS package, which you may see for more options and details. It uses pantropical models from Chave et al. 2014 to estimate the above-ground biomass of tropical trees.

Usage

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add_tropical_biomass(data, species, region = "Pantropical",
  latitude = NULL, longitude = NULL,
  dbh_unit = guess_dbh_unit(data$dbh))

Arguments

data

A ForestGEO-like census-dataframe.

species

A ForestGEO-like species-dataframe.

region

Area of your dataset to estimate tree height thanks to Weibull-H region-, continent-specific and pantropical models proposed by Feldpausch et al. (2012). To be chosen between:

  • Africa: Africa

  • CAfrica: Central Africa

  • EAfrica: Eastern Africa

  • WAfrica: Western Africa

  • SAmerica: Southern America

  • BrazilianShield: Brazilian Shield

  • ECAmazonia: East-Central Amazonia

  • GuianaShield: Guiana Shield

  • WAmazonia: Western Amazonia

  • SEAsia: South-Eastern Asia

  • NAustralia: Northern Australia

  • Pantropical: Pantropical

latitude, longitude

A number giving coordinates, e.g. latitude = 9.004080, longitude = -79.525635. It can also be a vector of such numbers, with as many elements as the number of rows of data.

dbh_unit

Character string giving the unit of dbh values, e.g. "mm" (see valid_units()).

Value

A modified version of the data dataframe, with additional columns giving taxonomic, wood density (in g/cm^3), and biomass (in kg) information.

References

Chave et al. (2014) Improved allometric models to estimate the aboveground biomass of tropical trees, Global Change Biology, 20 (10), 3177-3190

See Also

BIOMASS::computeAGB(), BIOMASS::retrieveH() add_wood_density().

Examples

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library(dplyr)
library(fgeo.biomass)

data <- fgeo.biomass::scbi_stem_tiny_tree
species <- fgeo.biomass::scbi_species

add_tropical_biomass(data, species, region = "pantropical")

# Not running to reduce build check-time
## Not run: 
data %>%
  add_tropical_biomass(species, latitude = -34, longitude = -58) %>%
  select(biomass, everything())

## End(Not run)

forestgeo/fgeo.biomass documentation built on June 8, 2019, 10:47 p.m.