LAHV {leafR}

Leaf Area Height Volume metric

Description

Calculates the leaf area height volume (LAHV) metric as described in Almeida et al. (2019).

Usage

LAHV(lad_profile, LAI.weighting = FALSE, height.weighting = FALSE)

Arguments

lad_profile

output of the lad.profile function

LAI.weighting

boolean, define if LAVH should be weighted by total LAI. default FALSE

height.weighting

boolean, define if LAVH should be weighted by the max height. default FALSE

Value

A numeric containing the Leaf Area Heght Volume calculated from the Leaf Area Density profile.

References

Almeida, D. R. A., Stark, S. C., Chazdon, R., Nelson, B. W., Cesar, R. G., Meli, P., … Brancalion, P. H. S. (2019). The effectiveness of lidar remote sensing for monitoring forest cover attributes and landscape restoration. Forest Ecology and Management, 438, 34–43. doi: 10.1016/J.FORECO.2019.02.002

Examples

# Get the example laz file
normlas.file = system.file("extdata", "lidar_example.laz", package="leafR")

# Calculate LAD from voxelization
VOXELS_LAD = lad.voxels(normlas.file,
                        grain.size = 2)

# Calculate the LAD profile
lad_profile = lad.profile(VOXELS_LAD)

LAHV(lad_profile, LAI.weighting = FALSE, height.weighting = FALSE)
LAHV(lad_profile, LAI.weighting = TRUE, height.weighting = FALSE)
LAHV(lad_profile, LAI.weighting = FALSE, height.weighting = TRUE)
LAHV(lad_profile, LAI.weighting = TRUE, height.weighting = TRUE)