Calculate the dates of budburst and beginning of leaf fall
Wrapper for vegperiod
calc_vegperiod( budburst_method, leaffall_method, dates = NULL, tavg = NULL, out_yrs = NULL, budburstdoy.fixed = 121, leaffalldoy.fixed = 279, ... )
budburst_method |
name of model for estimating budburst day of year.
Either 'fixed' or one of the values accepted by the 'start.method'-argument
of the function |
leaffall_method |
name of model for estimating day of year when leaffall
begin. Either 'fixed' or one of the values accepted by the
'end.method'-argument of the function |
dates |
date vector passed to |
tavg |
vector of daily mean air temperature (deg C) passed to
|
out_yrs |
integer vector of the years to be returned. If not
specified, values for the years in |
budburstdoy.fixed |
vector of values to be returned if
|
leaffalldoy.fixed |
vector of values to be returned if
|
... |
additional argument passed to |
a data.frame with columns year, start, end. If
budburst_method = 'fixed' or leaffall_method = 'fixed',
start and end contain the values specified in
budburstdoy.fixed and leaffalldoy.fixed respectively.
# fixed budburst and leaffall doy
calc_vegperiod(out_yrs = 2001:2010,
budburst_method = "fixed",
leaffall_method = "fixed",
budburstdoy.fixed = floor(runif(10, 120,130)),
leaffalldoy.fixed = floor(runif(2, 260,280)))
# dynamic budburst and leaffall using air temperature
data(slb1_meteo)
calc_vegperiod(budburst_method = "Menzel",
leaffall_method = "fixed",
leaffalldoy.fixed = 280,
dates = slb1_meteo$dates,
tavg = slb1_meteo$tmean,
species = "Fagus sylvatica",
est.prev = 3)
calc_vegperiod(budburst_method = "Menzel",
leaffall_method = "ETCCDI",
dates = slb1_meteo$dates,
tavg = slb1_meteo$tmean,
species = "Quercus robur",
est.prev = 3)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.