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Titel (primär) Simulation of forest tree species’ bud burst dates for different climate scenarios: chilling requirements and photo-period may limit bud burst advancement
Autor Lange, M.; Schaber, J.; Marx, A.; Jäckel, G.; Badeck, F.W.; Seppelt, R.; Doktor, D.;
Journal / Serie International Journal of Biometeorology
Erscheinungsjahr 2016
Department CLE; ASAM; CHS;
Band/Volume 60
Heft 11
Sprache englisch;
POF III (gesamt) T53; T12;
Keywords Phenology; Bud burst; Deciduous forest; Trend; Photo-period; Climate scenarios
UFZ Querschnittsthemen RU1
Abstract This study investigates whether the assumed increase of winter and spring temperatures is depicted by phenological models in correspondingly earlier bud burst (BB) dates. Some studies assume that rising temperatures lead to an earlier BB, but even later BB has been detected. The phenological model PIM (promoter-inhibitor-model) fitted to the extensive phenological database of the German Weather Service was driven by several climate scenarios. This model accounts for the complicated mechanistic interactions between chilling requirements, temperature and photo-period. It predicts BB with a r 2 between 0.41 and 0.62 and a RMSE of around 1 week, depending on species. Parameter sensitivities depict species dependent interactions between growth and chilling requirements as well as photo-period. A mean trend to earlier BB was revealed for the period 2002– 2100, varying between −0.05 and −0.11 days per year, depending on species. These trends are lower than for the period 1951– 2009. Within climate scenario period, trends are decreasing for beech and chestnut, stagnating for birch and increasing for oak. Results suggest that not fulfilled chilling requirements accompanied by an increasing dependency on photo-period potentially limit future BB advancement. The combination of a powerful phenological model, a large scale phenological database and several climate scenarios, offers new insights into the mechanistic comprehension of spring phenology.
ID 17589
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=17589
Lange, M., Schaber, J., Marx, A., Jäckel, G., Badeck, F.W., Seppelt, R., Doktor, D. (2016):
Simulation of forest tree species’ bud burst dates for different climate scenarios: chilling requirements and photo-period may limit bud burst advancement
Int. J. Biometeorol. 60 (11), 1711 - 1726