radial.trends: Radial trends in sap flux
In EwersLabUWyo/AquaFlux:

Description Usage Arguments Details Value Author(s)

Calculate whole tree sap flux, accounting for radial trends.

radial.trends(sapflux1, sapflux2,
              sensor.depth1, sensor.depth2,
              DBH, sapwood.depth,
              reg.type)

`sapflux1`	A time series of sap flux data, such as a column from AquaFlux output "sapflux.data". Units must be in ( vol/m2 of sapwood /time ).
`sapflux2`	A second times series of sap flux data, from the same tree as sapflux1.
`sensor.depth1`	The depth (cm) TDP sensor 1 is inserted into the tree.
`sensor.depth2`	The depth (cm) TDP sensor 2 is inserted into the tree.
`DBH`	The diamater at breast hieght (1.37m) of the tree. DBH units: cm.
`sapwood.depth`	The maximum depth of tree sapwood in cm.
`reg.type`	Regression type relating the two measurements. Options are "mean"=average, "linear"=linear, "gaus"=Gaussian.

This function account for radial trends in sap flux by modeling the relationship between sap flux at two observed different depths. This relationship can be an average value, a linear regression, or a Gaussian regression. The relationship is then plotted, both in terms of sap flux (vol/m2 of sapwood /time) and sap flow (vol/time) after accounting for different sapwood areas. Funciton output is a time series of average sap flow after accounting for radial trends.

Output is a time series of average sap flow after accounting for radial trends. Units are (vol / time / whole tree). For example (g of water / s / tree).

Heather Speckman (HeatherNSpeckman@gmail.com)

EwersLabUWyo/AquaFlux documentation built on July 6, 2019, 5:16 a.m.