Aplicarea metodei claselor de vârstă la fonduri de producție puternic excedentare în arborete exploatabile: un studiu de caz [ Age class method applied in growing stoks highly exceding in overaged-exploitable stands: A case study]
This paper aims to find optimal planning solutions for the management of high forests, designed to produce regular wood assortments and facing with a significant surplus of exploitable stands. In production unit III Șoimu from Tazlău Forest District, the surplus of exploitable stands, determined...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
”Ștefan cel Mare” University of Suceava, Faculty of Forestry and “Marin Drăcea” National Research-Development Institute in Forestry - Station Câmpulung Moldovenesc
2016-08-01
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Series: | Bucovina Forestieră |
Subjects: | |
Online Access: | http://www.bucovina-forestiera.ro/arhiva/2016/16(1)/023-041_popa_16_1.pdf |
Summary: | This paper aims to find optimal planning solutions for the management
of high forests, designed to produce regular wood assortments and
facing with a significant surplus of exploitable stands. In production unit
III Șoimu from Tazlău Forest District, the surplus of exploitable stands,
determined in relation to forest area, evolved during 1994-2014 from
78.2% to 107.6% of the size of the normal periodic area although, in the
same period, the allowable cutting volume increased by 41% (from 13100
to 18500 m3
an-1). Given the difficulties of leading the real growing stock
structure to the structure of the normal growing stock, 10 different normalization
scenarios have been proposed. Their comparison permitted determining
the pattern of normal structure that allows the fastest diminishing
of exploitable stands excess and a substantial diminution of exploitability
sacrifices in the next 60 years. It has been found that the best scenario
corresponds to a rotation of 100 years, divided into four periods, as follows:
two periods of 30 and two periods of 20 years. Thus, compared to the
solutions provided by current management plan, in the identified scenario,
after the first 20 years the growing stock already reaches a small deficit
of exploitable stands and, after about 60 years, it reaches a structure very
similar to the normal one. In contrast, according to the solutions provided
by the current forest management plan, it is estimated that normalization
of the growing stock will be achieved in at least 120 years and the
exploitability sacrifices will be significantly higher. In addition, periods
characterized by high excess of exploitable stands will alternate with highly
deficitary periods in exploitable stands and, over about 90 years, the
allowable cutting volume will be about 65% lower than the normal one. |
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ISSN: | 1582-0769 1582-3725 |