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634.9m
B 76
B 76
Product yield tables for red pine plantations
[Текст]. 8. Product yield tables for red pine plantations / G.M. Bonnor ; School of forestry, Northern Arizona University. - Toronto : Forest Management Research & Services Institute, 1967. - 11 с. : Figures. - Библиогр: p. 6. - 0-20 р.
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634.9m
B45
B45
Developing an ideal growing stock for tolerant hardwoods in Central Ontario
[Текст] : доклад, тезисы доклада / A.B. Berry. - Ottawa : Department of Forestry, 1963. - 10 с. : рис. - (Forest Research Branch Contribution ; 539). - eng. - Библиогр.: с. 9-10. - 0.10 р.
Аннотация: A brief history is given for a 47-acre woodlot successively high-graded for the best timber, grazed by cattle, cut haphazardly for fuelwood then placed under management with the object of developing a balanced stand structure for the maximum production of wood volume under the selection system. Four stem-distributions are being tested, two levels of growing stock and two upper diameter limits, combined with two cutting cycles. From the analysis of the results the best, or ideal, stand structure will be determined for this area
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| УДК |
Аннотация: A brief history is given for a 47-acre woodlot successively high-graded for the best timber, grazed by cattle, cut haphazardly for fuelwood then placed under management with the object of developing a balanced stand structure for the maximum production of wood volume under the selection system. Four stem-distributions are being tested, two levels of growing stock and two upper diameter limits, combined with two cutting cycles. From the analysis of the results the best, or ideal, stand structure will be determined for this area
Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)