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Abstract
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Article Information:
Assessment of Volume Renewal of Beech Species by the Method of 3p
M.M. E-Fallahchai, S. Armin Hashemi and Reza Rashidi
Corresponding Author: Seyed Armin Hashemi
Submitted: 2010 December, 06
Accepted: 2011 February, 07
Published: 2011 May, 05 |
Abstract:
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The purpose of this study is comparison of volume renewal, way a hundred percent with sampling
way by 3p. In order to reduce the field work and to accelerate the outputs of forest products the one hundred
percent volume renewal in north forests were replaced by the volume renewal that used 3p sampling method
during 2001-2002, which its field operations are accomplished by industrial and fire wood trunks volume
measurement and the obtained results are generalized to all trees of the same annual cutting license. In order
to assess and to compare the, method of 3P with one Hundred percent volume renewal as many as 248 trees
with a volume of 930.9 m3 of the marked trees of beech species of series 9 from Galandrood project were
carried out for one hundred percent volume renewal, which its industrial trunks with diameter above 20 cm
were equal to 749.28 m3. The obtained results from various sampling by method of 3P among these trees
indicates tat its difference in relation to the one hundred percent volume renewal was variable from at least
0.02% up to maximum 7.32%, which in 11.11% of the cases the difference was less than 1% , and in 88.89%
of the cases, the difference was less than 4%. In the method of one hundred percent volume renewal in relation
to the method of 3P, in terms of the numbers of working days, there was about 30% savings, and in terms of
the expenses of the execution there was about 154% savings. With observing the technical points and necessary
care in measuring the trees while marking them and also observing the proper principles of cutting sample trees
and other marked trees and care in measuring of sample trees, there will be much effect in increasing or
reducing of volume in relation to the coefficient designated.
Key words: Assessment, beech, 3P, forest, volume renewal, stand,
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Cite this Reference:
M.M. E-Fallahchai, S. Armin Hashemi and Reza Rashidi, . Assessment of Volume Renewal of Beech Species by the Method of 3p. Current Research Journal of Biological Sciences, (3): 180-185.
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ISSN (Online): 2041-0778
ISSN (Print): 2041-076X |
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