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Issue 10 (3) 2011 pp. 37-47

Wojciech Szewczyk, Małgorzata Dudek, Marlena Baranowska

Poznań University of Life Sciences

EVALUATION OF OAK TREE CONDITIONS ON THE BASIS OF LOSSES IN THE ASSIMILATION APARATUS OF SELECTED OAK STANDS IN SULęCIN FOREST DISTRICT

Keywords: oak, decline, defoliation, Sulęcin Forest District
Abstract:

 

Oak trees play a significant naturalistic and economic role. Common oaks represent the most valuable forest-creating species in Poland. In the recent years, on the area of the whole country, one can observe a visible deterioration of the health conditions
in oak tree stands. It is difficult to indicate the main factor responsible for this phenomenon. Because of the wide range of this observation, it can be assumed that this process is caused by many biotic and abiotic, as well as anthropogenic factors. Studies were out in the Sulęcin Forest District. At the turn of July and August in the years 2009 and 2010, an assessment of the losses in the majority of trees showed a medium degree (49%). Another group of trees showed 36% of leaf loss, while 14% of oak trees did not show any losses at all. A very high degree of defoliation was found only in 1% of trees. The presented data indicate that an average loss in the assimilation apparatus of oak trees amounted to 29.15%.

 

pub/.pdf Full text available in english in Adobe Acrobat format:
http://www.forestry.actapol.net/pub/4_3_2011.pdf

For citation:

MLA Szewczyk, Wojciech, et al. "Evaluation of oak tree conditions on the basis of losses in the assimilation aparatus of selected oak stands in Sulęcin Forest District." Acta Sci.Pol. Silv. 10.3 (2011): 37-47.
APA Szewczyk W., Dudek M., Baranowska M. (2011). Evaluation of oak tree conditions on the basis of losses in the assimilation aparatus of selected oak stands in Sulęcin Forest District. Acta Sci.Pol. Silv. 10 (3), 37-47
ISO 690 SZEWCZYK, Wojciech, DUDEK, Małgorzata, BARANOWSKA, Marlena. Evaluation of oak tree conditions on the basis of losses in the assimilation aparatus of selected oak stands in Sulęcin Forest District. Acta Sci.Pol. Silv., 2011, 10.3: 37-47.
Streszczenie w języku polskim:
http://www.forestry.actapol.net/tom10/zeszyt3/streszczenie-4.html