INVESTIGATING REMAINING TIMBER VOLUME IN STUMPS OF TREES TO TOPOGRAPHY, DIAMETER AND TRUNKS' QUALITY

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ESLAMI A.R.; BADR F.

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Journal: Journal of Wood and Forest Science and Technology Year:2016 | Volume:23 | Issue:SUPPLEMENT 1 Page(s): 98-113

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Title

INVESTIGATING REMAINING TIMBER VOLUME IN STUMPS OF TREES TO TOPOGRAPHY, DIAMETER AND TRUNKS' QUALITY

Author(s)

ESLAMI A.R. | BADR F. | Issue Writer Certificate

Keywords

LOSS VOLUMEQ1

ENVIRONMENTAL CONDITIONSQ1

QUANTITATIVE CHARACTERISTICSQ2

BEECHQ2

Abstract

Background and objectives: Utilization is one of managerial activities in the forest that involves cutting, limbing, and bucking, topping of marked trees and finally skidding and transferring bucks to timber Depew place. Hence, in case of poor design and implementation of the process, costs are increased and there would be environmental damages as well as economic and social damages such as sharp timber loss, limited use of available resources and damages to the workforce. This study was conducted aimed to investigate factors affecting the stump volume including: the slope, domain direction, height above sea level and stump surface diameter to determine the minimum volume of remaining timber of trees' stumps, until by collecting the thickest and most applied part of timber of trees' stump both collection and productivity of trees are increased and pressure and further harvesting of forest areas are reduced.Materials and methods: The study was conducted in five compartments of districts 1, 2 and 3 of Nav forestry project in the main habitats of the species of BEECH in the southwest Caspian Sea in Talesh, Asalem, Guilan province. A total of 160 marked BEECH trees were randomly selected with a diameter from 10 to 115 cm cut by the forest sector workers of Asalam Co. For this purpose, some QUANTITATIVE CHARACTERISTICS of the trees were measured and recorded in related forms, including the stump height, stump surface diameter, stem diameter and the height of cut trees. In order to investigate the difference between the amount of timber produced from the stump (in compared to the full-size tree) in different classes of height above sea level, slope, slope direction and quality of trees' stump one-way ANOVA and Duncan mean comparison were used. The correlation between studied area slope and direction in different height classes with remaining stump volume was determined using Pearson's correlation.Results: According to the results of analysis of one-way variance, the stump quality, stump surface diameter and height above sea level showed a positive significant relationship with the volume of the stumps and trunks of BEECH trees so that the maximum volume of the trunk and stump was observed at the height of 1440-1650 meters above sea level, in trees with fork, two-branch and cylindrical trunk quality with a diameter more than 90 cm. According to the results, 95.63% of trees have been cut at the height less than half of stump surface diameter. The results of Pearson's correlation showed a significant correlation between the trunk and stump volume and stump surface diameter of the trunk quality so that by increasing stump surface diameter, also remaining stump volume has been increased.Conclusion: Parts close to the stumps of trees are considered as valuable parts of trees that in the case of remaining as high-height remove many timbers from the production cycle. Hence, low height of the stump plays an important role in increasing the volume of output timber and increasing income from it. In this study, despite the thickness of the trees, they were cut at the height less than half of the diameter of the stump and remaining stumps had low height and volume that caused minimal loss of industrial timber when tree felling and utilization.

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APA: Copy

ESLAMI, A.R., & BADR, F.. (2016). INVESTIGATING REMAINING TIMBER VOLUME IN STUMPS OF TREES TO TOPOGRAPHY, DIAMETER AND TRUNKS' QUALITY. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, 23(SUPPLEMENT 1), 98-113. SID. https://sid.ir/paper/156838/en

Vancouver: Copy

ESLAMI A.R., BADR F.. INVESTIGATING REMAINING TIMBER VOLUME IN STUMPS OF TREES TO TOPOGRAPHY, DIAMETER AND TRUNKS' QUALITY. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY[Internet]. 2016;23(SUPPLEMENT 1):98-113. Available from: https://sid.ir/paper/156838/en

IEEE: Copy

A.R. ESLAMI, and F. BADR, “INVESTIGATING REMAINING TIMBER VOLUME IN STUMPS OF TREES TO TOPOGRAPHY, DIAMETER AND TRUNKS' QUALITY,” JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, vol. 23, no. SUPPLEMENT 1, pp. 98–113, 2016, [Online]. Available: https://sid.ir/paper/156838/en

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