The distribution and frequency of damage to roadside trees in low-volume road construction

We investigated the distribution and frequency of damage to tree stands adjacent to low-volume roads according to the type of hillside materials involved（soil or rock） and hillside gradient in mountainous forests of northern Iran. A total of 80 plots were systematically and randomly sampled to recor...

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Bibliographic Details
Published inJournal of forestry research Vol. 29; no. 1; pp. 221 - 226
Main Authors Lotfalian, Majid, Nasiri, Mehran
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 2018
Springer
Springer Nature B.V
Department of Forestry, Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources,PO Box 737, Badeleh, Sari, Iran
Subjects
Biomedical and Life Sciences
Clay soils
Construction
Crushing
Damage
Excavating machinery
Excavators
Forestry
Highway construction
Life Sciences
Original Paper
Road construction
Road construction industry
Roads & highways
Slope gradients
Trees
Wounding
道路建设;损坏;分发;频率;伤害;压碎;坡度;弯曲
Gradient
Tree damage
Low-volume road construction
Hillside materials
Distribution
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Summary:We investigated the distribution and frequency of damage to tree stands adjacent to low-volume roads according to the type of hillside materials involved（soil or rock） and hillside gradient in mountainous forests of northern Iran. A total of 80 plots were systematically and randomly sampled to record damaged trees（bending,crushing and wounding） by class of hillside gradient and materials at the edge of road. Tree wounding and crushing at rock slopes was significantly greater than at hillsides with a mix of clay soil（p ／ 0.05）. Damage on hillsides with slope gradients[45% were 2, 8.5 and 2.3 times more frequent than on hillsides with slope gradient／15% for bending, crushing and wounding, respectively. The damage distribution varied according by type and the most frequent damage was tree wounding（p ／ 0.05）. The damage distribution was measured at distances of 4, 5 and 8 m from the road fillslope for tree bending, crushing and wounding, respectively. Using hydraulic excavators and physical barriers（wooden obstruction and synthetic holder） during earthworks for road construction could reduce these damage.
Bibliography:Majid Lotfalian;Mehran Nasiri;Department of Forestry, Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources
Low-volume road construction;Tree damage;Hillside materials;Gradient;Distribution
23-1409/S
We investigated the distribution and frequency of damage to tree stands adjacent to low-volume roads according to the type of hillside materials involved（soil or rock） and hillside gradient in mountainous forests of northern Iran. A total of 80 plots were systematically and randomly sampled to record damaged trees（bending,crushing and wounding） by class of hillside gradient and materials at the edge of road. Tree wounding and crushing at rock slopes was significantly greater than at hillsides with a mix of clay soil（p ／ 0.05）. Damage on hillsides with slope gradients[45% were 2, 8.5 and 2.3 times more frequent than on hillsides with slope gradient／15% for bending, crushing and wounding, respectively. The damage distribution varied according by type and the most frequent damage was tree wounding（p ／ 0.05）. The damage distribution was measured at distances of 4, 5 and 8 m from the road fillslope for tree bending, crushing and wounding, respectively. Using hydraulic excavators and physical barriers（wooden obstruction and synthetic holder） during earthworks for road construction could reduce these damage.
ISSN:1007-662X
1993-0607
DOI:10.1007/s11676-017-0433-4