Wyniki wyszukiwania

1

Wplyw spalowania powodowanego przez jelenie na przyrost wysokosci i miazszosci jodel [Abies alba Mill.]

100%

Pach M.

Acta Agraria et Silvestria. Series Silvestris

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2004

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tom 42

35-48

The paper presents the results of studies carried out in the Forest Experimental Station in Krynica (Beskid Sądecki Mts,, Southern Poland), where the influence of bark-stripping on height and volume increment of silver fir was analyzed on the sample plots established in stands with fir share. On the basis on measurements done in the field and on discs cut from wounded and uninjured trees, stem analyses of firs were performed. Average decrease of height and volume increment of all studied damaged trees amounted respectively 12% and 6% of the last increment before bark stripping. The comparison of height and volume increment of wounded and unwounded fir trees pointed at existence of statistically significant differences. The decrease of height and volume increment in the first year after injury, which was determined respectively on 62% and 58% wounded trees, was not affected by the dimensions of wounds and their locations on tree trunks. Only the average value of volume increment in the first three and five years after injury depended significantly on the length of wound and its location on tree trunk.

2

Wplyw spalowania powodowanego przez jelenie na szerokosc slojow rocznych pni jodel

100%

Pach M.

Acta Agraria et Silvestria. Series Silvestris

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2003

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tom 41

75-82

The paper presents the results on studies, which dealt with a determination of relationship between annual ring widths of wounded firs formed before and after bark stripping occurrence on the undamaged side of stem and their dependence on features and location of wounds on trunks. The injured fir trees came from ten sample plots established in the Forest Experimental Station in Krynica (Beskid Sądecki Mountains). Analyses were done on discs cut from damage fir stems at the middle of the wounds. It was found that only width of ring formed in the first year after bark stripping was smaller than before wound occurrence. Average annual ring widths from three and five year periods following damage were larger than before it in the same period lengths. The increase of annual ring width occurred in the case of larger relative width and surface of wounds.

3

Spalowanie jodly na terenie Lesnego Zakladu Doswiadczalnego w Krynicy [Beskid Sadecki] oraz jego wplyw na wybrane cechy morfologiczne koron

100%

Pach M.

Acta Agraria et Silvestria. Series Silvestris

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2002

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tom 40

31-47

The objectives of this study was to describe the size and position of wounds on European Silver Fir (Abies alba Mill.) and to analyse their impact on selected morphological features of crown. The studies were carried out in 10 sample plots in stands of Fir, located in the Forest Experimental Station in Krynica (Beskid Sądecki Mts.). Precise wound measurements were made and such features as growth tendency, vitality, absolute and relative crown length were determined. Wound size was characterized by mean relative width (60%), length (36% of wounds were shorter than 30 cm), and the surface area of the unhealed part of the wound (mean area ranged between 20 and 80 cm2). The most vulnerable section of the trunk to bark damage was found to be between 30 and 210 cm above ground level. The potential height of damage can be significantly limited by low growing branches. When damage intensity of the Fir Tree was >40% of trunk circumference and >30% of trunk surface, the tree was unable to reach the highest value of vitality index.

Ograniczanie wyników

3 Acta Agraria et Silvestria. Series Silvestris

3 Pach M.

1 2004

1 2003

1 2002

Wplyw spalowania powodowanego przez jelenie na przyrost wysokosci i miazszosci jodel [Abies alba Mill.]

Wplyw spalowania powodowanego przez jelenie na szerokosc slojow rocznych pni jodel

Spalowanie jodly na terenie Lesnego Zakladu Doswiadczalnego w Krynicy [Beskid Sadecki] oraz jego wplyw na wybrane cechy morfologiczne koron