radial.trends: Radial trends in sap flux

In HeatherSpeckman/AquaFlux:

Description

Calculate whole tree sap flux, accounting for radial trends.

Usage

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

Arguments

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.

Details

Add together two numbers

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.

Value

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).

HeatherSpeckman/AquaFlux documentation built on June 15, 2020, 12:41 p.m.