ScaleFlux: Scales sapflow measurements

In bmcnellis/sapflux: Analyze Sapflux Traces

Description

The two-dimensional flux densities output by GranierConversions, in order to be scaled to shrub/tree and stand level, must be multiplied by a conducting sapwood area. Conducting sapwood area is often a predictable function of stem diameter, and with this function it becomes possible to scale flux densities with only stem 'dbh' supplied.

Usage

ScaleFlux(flux, to = "site flux", sapwood_type = "complete")

Arguments

flux	'flux' class object
sapwood	Sapwood type - used to define sapwood area depth, see details
merge	Optional logical. Should plants of identical dbh/id be merged?
...	Additional parameters to pass to CalculateSapwoodArea

Details

As.FUN:

The conversion function between conducting sapwood area and d.b.h. is likely species specific, but can frequently be computed from literature values. Meinzer et al. (2003) published a function derived from 107 individuals of 24 co-occuring Panamanian canopy tree species, all of which were found to have similiar sapwood area-dbh relationships to each other. This function is used as the default, under strong caution that its likely that this function does not apply to species that are not broad-leaved wet-mesic tropical angiosperms.

units: Output units, "cm/hr" (the default) and "mm/hr" are currently supported.

id: id vector to group stems by during merging. Passed to FluxMerge

merge: Should 'FluxMerge' be invoked to merge stems by ID and dbh? Defaults to FALSE.

Examples

myflux <- ScaleFlux(flux = myflux, to = "stem flux")

bmcnellis/sapflux documentation built on May 12, 2019, 10:27 p.m.