lai_adjust: Calculates Leaf Area Index for specified height above ground

In ilyamaclean/microclima: microclimate modelling with R

Calculates Leaf Area Index for specified height above ground

Description

lai_adjust is used to adjust the total one-sided area of leaf tissue per unit ground surface area to derive values at at a specified height above the ground.

Usage

lai_adjust(l, veghgt, hgt = 0.05)

Arguments

l	raster object, two-dimensional array or matrix of leaf area index values as returned by lai().
veghgt	a raster object, two-dimensional array or matrix of vegetation heights (m).
hgt	a numeric value representing the height above the ground for which Leaf Area Index is required (m).

Details

If l is a raster object, a raster object is returned. Temperatures are often required for a specified height above the ground, and in short vegetation, the leaf area can be substantially less at this height than at gorund level. This function enables the user to estimate leaf area for a specified height about the ground.

Value

a raster object or a two-dimensional area of numeric values representing the Leaf Area Index values for a specified height above the ground

Examples

library(raster)
l <- lai(aerial_image[,,3], aerial_image[,,4])
la<-lai_adjust(l, veg_hgt)
par(mfrow=c(2, 1))
plot(if_raster(l, dtm1m), main = "Leaf area index")
plot(if_raster(la, dtm1m), main = "Adjusted leaf area index")

ilyamaclean/microclima documentation built on Oct. 31, 2023, 11:41 p.m.