Description Usage Arguments Value Author(s) References See Also Examples
From the diameter and either i) a model, ii) the coordinates of the plot or iii) the region, this function gives an estimation of the total tree height.
1 2 |
D |
Vector of diameters. |
model |
A model output by the function |
coord |
Coordinates of the site(s), either a vector (e.g. c(longitude, latitude)) or a matrix/dataframe with two columns (e.g. cbind(longitude, latitude)). |
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:
|
plot |
(optional) Plot ID, must be either one value, or a vector of the same length as D. This argument is used to build stand-specific HD models. |
Returns a list with:
H
: H predicted by the model
RSE
Residual Standard Error of the model, or a vector of those for each plot
Ariane TANGUY, Maxime REJOU-MECHAIN, Arthur PERE
Feldpausch et al. Tree height integrated into pantropical forest biomass estimates. Biogeosciences (2012): 3381-3403. Chave et al. Improved allometric models to estimate the aboveground biomass of tropical trees. Global change biology 20.10 (2014): 3177-3190.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # Load a database
data(NouraguesHD)
model <- modelHD(D = NouraguesHD$D, H = NouraguesHD$H, method = "log2")
# If any height model is available
H <- retrieveH(D = NouraguesHD$D, model = model)
# If the only data available are the coordinates of your spot
lat <- 4.08
long <- -52.68
coord <- cbind(long, lat)
## Not run:
H <- retrieveH(D = NouraguesHD$D, coord = coord)
## End(Not run)
# If the only data available is the region of your spot
H <- retrieveH(D = NouraguesHD$D, region = "GuianaShield")
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