method_vonWilpert | R Documentation |
The method vonWilpert
is based on von Wilpert (1990). It was originally
developed for "Picea abies" in the Black Forest but is commonly used for all
tree species throughout Germany. As usual, the rules regarding the soilmatrix
are neglected in this implementation.
Orthodox are 3 criteria: short day, temperature and drought criterion we consider -as usual- only short day and temperature citerion
7 day moving average of daily mean temperatures at least 5 consecutive days under 10°C
if afterwards more than 5 consecutive days 7 day moving average over 10°C vegetation period gets restarted
last day of the vegetation period is DOY 279 (5th of October in leap years)
von Wilpert, K. (1990) Die Jahrringstruktur von Fichten in Abhängigkeit vom Bodenwasserhaushalt auf Pseudogley und Parabraunerde: Ein Methodenkonzept zur Erfassung standortsspezifischer Wasserstreßdispostion. Freiburger Bodenkundliche Abhandlungen. Pages 106–108.
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