RUEmodMY: Radiation use efficiency based model

In BioCro: Simulation of Biomass Crops

Description

Same as RUEmod but it handles multiple years.

Usage

RUEmodMY(weatherdatafile, doy.s = 91, doy.f = 227,...) 

Arguments

weatherdatafile	weather data file (see example).
doy.s	first day of the growing season, default 91.
doy.f	last day of the growing season, default 227.
...	additional arguments to be passed to the RUEmod function.

Value

a data.frame structure with components

year	simulation year.
doy	day of the year.
lai.cum	cumulative leaf area index.
AG.cum	cumulative above ground dry biomass (Mg ha^{-1}).
AGDD	cumulative growing degree days.
Int.e	Intercepted solar radiation.

Examples

## weather data from Champaign, IL
data(cmiWet)
tmp1 <- RUEmodMY(cmiWet)

xyplot(AG.cum ~ doy | factor(year), type='l', data = tmp1,
       lwd=2,
       ylab=expression(paste("dry biomass (Mg ",ha^-1,")")),
       xlab="DOY")

BioCro documentation built on May 2, 2019, 6:15 p.m.