EJPAU 2007. Wilczyński S. , Podlaski R. HEAT AS A FACTOR DETERMINING THE ACTIVITY OF CAMBIUM IN BLACK ALDER (<I>ALNUS GLUTINOSA </I>(L.) GAERTN.) ON MOIST SITES

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2007
Volume 10
Issue 1

Topic:

Forestry

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Wilczyński S. , Podlaski R. 2007. HEAT AS A FACTOR DETERMINING THE ACTIVITY OF CAMBIUM IN BLACK ALDER (ALNUS GLUTINOSA (L.) GAERTN.) ON MOIST SITES, EJPAU 10(1), #13.
Available Online: http://www.ejpau.media.pl/volume10/issue1/abs-13.html

HEAT AS A FACTOR DETERMINING THE ACTIVITY OF CAMBIUM IN BLACK ALDER (ALNUS GLUTINOSA (L.) GAERTN.) ON MOIST SITES

Sławomir Wilczyński¹, Rafał Podlaski²
¹ Department of Forest Protection and Forest Climatology, Agricultural University of Cracow, Poland
² Department of General Biology and Nature Protection, Institute of Biology, Pedagogical University of Kielce, Poland

ABSTRACT

The effects of air temperature, precipitation, and duration of the direct solar radiation (sunshine) on radial increment of black alder (Alnus glutinosa (L.) Gaertn.) are discussed in this paper. The investigated 21 trees were growing on a fertile site with a high water table. Each tree was cored, and on cores the tree-ring width was measured. On the basis of these measurements the mean tree-ring chronology was developed which represented the growth rhythm of trees in the investigated site. The black alder trees were most strongly responding to temperature. The reaction to sunshine duration was a little weaker, while reaction to precipitation was insignificant. The effect of previous and current year temperatures on radial increment was significant. A positive effect on tree growth had a low temperature in May, high in July and October of the previous year, and high in May, July and August of the current year. Frosts in January and prolonged winter with low temperatures were harmful to trees. The duration of the direct solar radiation in the current growing season had a significant influence on tree growth. The increased amount of sunshine in May, July and August had a positive effect on radial increment. A lack of significant correlation between precipitation and increment was probably the result of moisture conditions of the investigated site. However, there was some influence of precipitation of the cool part of the year on tree growth in the coming growing season.

Key words: Alnus glutinosa, dendroclimatology, dendroecology, tree-ring width, Swietokrzyski National Park, Poland.

Sławomir Wilczyński
Department of Forest Protection and Forest Climatology,
Agricultural University of Cracow, Poland
Al. 29 Listopada 46, 31-425 Cracow, Poland
Phone: +48 12 662 53 23
email: rlwilczy@cyf-kr.edu.pl

Rafał Podlaski
Department of General Biology and Nature Protection,
Institute of Biology, Pedagogical University of Kielce, Poland
Swietokrzyska 15, 25-406 Kielce, Poland
Phone: +48 41 349 63 22
email: r_podlaski@pro.onet.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.