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Effects of utilized
trees’ diameter on the residual stand in the Savadkooh
forest in Northern Iran
Mohammad Reza Azarnoush*,
Ali Reza Gholamnia and Ali Reza Feiznejad
Department
of Forestry, Islamic Azad University, Chalous branch, Iran.
*Corresponding
author. E-mail:
shahab.sham@gmail.com.
Accepted 26
March, 2010 |
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Cutting
of trees, like other stages of utilization, causes many
damages to the residual stand. Recognition of the type and
severity of damages and the factors causing such damages may
be important. This research was performed to study the
effect of fallen trees’ diameter on the residual stand in
the forest of Mazandaran province in northern Iran. At
first, 50 trees (20%) out of 250 signed trees were selected
at random, as per the diameter classes, and then considering
the sample, a number of 50 trees were considered in a
semi-circle with an area of 1500 square meters. Quantity
(diameter breast height (D.B.H.) and height) and quality
(up-rooted, crown break, injury to the bark and peeling of
the bark) specifications were recorded before and after
cutting. Results of the study indicate that thorax diameter
of fallen trees, except for the up-rooted trees, may have a
significant impact on the range of crown and trunk break,
injury of the trunk and peeling of the trees. The most
damaged stand happened when a diameter of 80 cm and more was
used in cutting trees.
Key
words:
Damage, utilization, residual stand, diameter classes, D.B.H.
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