LNScaling: LNScaling

In LPDynR: Land Productivity Dynamics Indicator

LNScaling

Description

LNScaling (Local Net Productivity Scaling) uses a productivity variable (SpatRaster), e.g. season growth, to calculate the actual status of land productivity relative to its potential in homogeneous land areas or Ecosystem Functional Types (SpatRaster). If the productivity variable 'ProdVar' is a SpatRaster object with time series, it is calculated the average of the last 5 years

Usage

LNScaling(EFTs = NULL, ProdVar = NULL, cores2use = 1, filename = "")

Arguments

EFTs	SpatRaster object (or its file name). Ecosystem Functional Types. Its first variable has the number of EFT (cluster) each pixel belongs to
ProdVar	SpatRaster object (or its file name). Productivity variable (e.g. Cyclic fraction -season growth-)
cores2use	Numeric. Number of cores to use for parallelization. Optional. Default is 1 (no parallelization)
filename	Character. Output filename. Optional

Details

The Local Net Primary Production Scaling (LNS) method (Prince, 2009) calculates the difference between the potential and actual Net Primary Production for each pixel in homogeneous land areas. The current land production related to the local potential reflects the current level of productivity efficiency and, therefore, it is useful for the delineation of a land productivity status map

Value

SpatRaster object

Author(s)

Xavier Rotllan-Puig

References

Prince, S.D., Becker-Reshef, I. and Rishmawi, K. 2009. “Detection and Mapping of Long-Term Land Degradation Using Local Net Production Scaling: Application to Zimbabwe.” REMOTE SENSING OF ENVIRONMENT 113 (5): 1046–57

See Also

EFT_clust

Examples

dirctry <- paste0(system.file(package='LPDynR'), "/extdata")
variables_noCor <- rm_multicol(dir2process = dirctry,
                               multicol_cutoff = 0.7)
EFTs_raster <- EFT_clust(obj2clust = variables_noCor,
                         n_clust = 10)
sb <- terra::rast(paste0(system.file(package='LPDynR'), "/extdata/sb_cat.tif"))

LNScaling(EFTs = EFTs_raster[[1]],
          ProdVar = sb)

LPDynR documentation built on Oct. 16, 2023, 5:06 p.m.