BII: Biodiversity intactness index

In pik-piam/magpie4: MAgPIE outputs R package for MAgPIE version 4.x

Biodiversity intactness index

Description

calculates the area weighted biodiversity intactness index (BII) out of a MAgPIE gdx file

Usage

BII(
  gdx,
  file = NULL,
  level = "glo",
  mode = "auto",
  landClass = "sum",
  spatialWeight = NULL,
  adjusted = FALSE,
  bii_coeff = NULL,
  side_layers = NULL,
  dir = "."
)

Arguments

gdx	GDX file
file	a file name the output should be written to using write.magpie
level	level of regional aggregation; "cell" (magpie cluster level), "reg" (regional), "glo" (global), "regglo" (regional and global), "iso" (country level), "grid" (0.5 degree grid cell level).
mode	"auto" (default), "from_grid", "MAgPIE" or "postprocessing". "MAgPIE" reports the BV based on values from the MAgPIE biodiversity module. "postprocessing" calculates the BV based on land information from MAgPIE (for versions where biodiversity module was not available yet). "auto" uses "MAgPIE" if available and falls back to "postprocessing" otherwise. "from_grid" calculates BII values from BII output and returns aggregated values at the aggregation level specified.
landClass	"all" returns average BII values for all land classes of ov_bv, "sum" returns the weighted BII over all land classes of ov44_bv_weighted.
spatialWeight	Spatial weight for aggregating BII values. Only relevant if mode is "from_grid", adjusted is TRUE, or level is either "grid" or "iso".
adjusted	if "TRUE", function returns adjusted BII values (results have been adjusted for primary and secondary other land).
bii_coeff	file containing BII coefficients. Only needed for mode = "postprocessing". NULL tries to automatically detected the file.
side_layers	file containing LUH2 side layers. NULL tries to automatically detected the file.
dir	for gridded outputs: magpie output directory which contains a mapping file (rds or spam) disaggregation

Details

Calculates global, regional and cluster-level biodiversity intactness index (BII)

Value

Biodiversity intactness index (unitless)

Author(s)

Patrick v. Jeetze, Florian Humpenoeder, Felicitas Beier

Examples

## Not run: 
x <- BII(gdx)

## End(Not run)

pik-piam/magpie4 documentation built on April 22, 2024, 3:34 p.m.