Influence of meteorological conditions and crown defoliation on tree phenology in intensive forest monitoring plots in Slovenia

Autor: Urša Vilhar, Mitja Skudnik, Mitja Ferlan, Primož Simončič
Jazyk: German<br />English<br />Spanish; Castilian<br />French<br />Slovenian
Rok vydání: 2014
Předmět:
Zdroj: Acta Silvae et Ligni, Vol 105, Pp 1-15 (2014)
Druh dokumentu: article
ISSN: 2335-3112
2335-3953
DOI: 10.20315/ASetL.105.1
Popis: Data from the forest monitoring programme in Slovenia were used to assess the relationship between tree phenology, crown defoliation and meteorological conditions in Fagus sylvatica, Quercus robur and Picea abies forests in the 2004-2013 period. We hypothesized a species-specific response of first leaf unfolding, general leaf colouring, the length of the growing season to crown defoliation, air temperature, precipitation and soil water. In accordance with the hypothesis, we found a high sensitivity of first leaf unfolding to air temperature and precipitation for all species, exhibiting contrasting responses. We observed strong sensitivity of beech defoliation to precipitation and soil water conditions. Oak crown defoliation and next-year phenology were correlated, with higher crown defoliation contributing to earlier leaf unfolding, later autumn leaf colouring and longer growing season of oak in next year. Correlation between crown defoliation and phenology was found neither for beech nor spruce.
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