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Issue 10 (3) 2011 pp. 5-14

Mariusz Bembenek1, Piotr S. Mederski1, Jörn Erler2, Dieter F. Giefing1

1Poznań University of Life Sciences
2
Dresden University of Technology

RESULTS OF LARGE-SIZE TIMBER EXTRACTING WITH A GRAPPLE SKIDDER

Keywords: grapple skidder, productivity, soil disturbance, damage in natural regeneration
Abstract:

 

A new HSM 904Z 6WD skidder of a large size was tested in a 140-year-old beech stand in northern Poland. The aim of the study was to analyse machine productivity and impact on the soil (bulk density and cone penetrometer test) and the remaining natural regeneration caused by skidding. Trees were cut by chainsaw and, if possible, felled into the direction of the skidroads. After delimbing, logs with a top diameter of a minimum
7 cm over the bark were prepared. The average skidding operational productivity including piling was 21.0 m3·h-1. At the same time, the level of damage in natural regeneration was: 18% (38% due to both: felling and skidding). An analysis of the soil after skidding showed that the density had grown by 15-30 g·cm-3. Increase of penetration resistance was up to 2.77 MPa as the biggest.

 

pub/.pdf Full text available in english in Adobe Acrobat format:
http://www.forestry.actapol.net/pub/1_3_2011.pdf

For citation:

MLA Bembenek, Mariusz, et al. "Results of large-size timber extracting with a grapple skidder." Acta Sci.Pol. Silv. 10.3 (2011): 5-14.
APA Bembenek M., Mederski P.S., Erler J., Giefing D.F. (2011). Results of large-size timber extracting with a grapple skidder. Acta Sci.Pol. Silv. 10 (3), 5-14
ISO 690 BEMBENEK, Mariusz, et al. Results of large-size timber extracting with a grapple skidder. Acta Sci.Pol. Silv., 2011, 10.3: 5-14.
Streszczenie w języku polskim:
http://www.forestry.actapol.net/tom10/zeszyt3/streszczenie-1.html