The Environmental Effects of Skidder Traffic and Skidding Directions on Forest Soil Compaction and the Regeneration Establishment Condition in Choob-e-Farim Forests

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Mostafanezhad Seyed Reza; Pourmadjidian Mohammad Reza; ESPAHBODI KAMBIZ; EGHTESADI ALI

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Journal: ECOLOGY OF IRANIAN FOREST Year:2020 | Volume:7 | Issue:14 Page(s): 22-30

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Title

The Environmental Effects of Skidder Traffic and Skidding Directions on Forest Soil Compaction and the Regeneration Establishment Condition in Choob-e-Farim Forests

Author(s)

Mostafanezhad Seyed Reza | Pourmadjidian Mohammad Reza | ESPAHBODI KAMBIZ | EGHTESADI ALI | Issue Writer Certificate

Keywords

Seedling EstablishmentQ1

Skidding DirectionQ1

Root VolumeQ1

Bulk DensityQ2

Abstract

Forest soil compaction influenced by the use of skidders machineries, its power and weight, causes changes on specific physical characteristics of soil. In most of the investigations, the negative effects of skidder traffic is reduction in growth of trees. The aim of this research was investigating the effects of number of skidder traffic in different Skidding Direction (uphill and downhill skidding) on soil compaction and forest seedlings establishment, through using rubber– tired skidder, the Timber jack 450c in compartments 9 and 11 series of the Dehmian exploitation corporation Choob-e-Farim company. The number of traffic at five levels (0, 1-5, 6-10, 11-15 and >15 passes) and two levels of Skidding Directions (uphill and downhill) were measured. After logging operations, sample plots with 9m2 size were recorded within the skidding trails. Bulk Density, seedling density and Root Volume were measured on the disturbed surface and within the skidding trails. Results showed that the most Bulk Density increase was occurred during the first few passes of skidder (1-5 traffic). The increases in Bulk Density were considerable at the sampling depth of 20-30 cm. Uphill skidding soil compaction were higher (1/24 gr/cm3) than downhill skidding (1/19 gr/cm3). Uphill and downhill Skidding Directions did not affect the seedlings density. Traffics by more than 10 times at uphill and downhill skidding reduced the seedlings density and growth. The number of allowed traffics in uphill and downhill was determined to be 7-8 and 11-12 times respectively.

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APA: Copy

Mostafanezhad, Seyed Reza, ESPAHBODI, KAMBIZ, Pourmadjidian, Mohammad Reza, & EGHTESADI, ALI. (2020). The Environmental Effects of Skidder Traffic and Skidding Directions on Forest Soil Compaction and the Regeneration Establishment Condition in Choob-e-Farim Forests. ECOLOGY OF IRANIAN FOREST, 7(14 ), 22-30. SID. https://sid.ir/paper/263104/en

Vancouver: Copy

Mostafanezhad Seyed Reza, ESPAHBODI KAMBIZ, Pourmadjidian Mohammad Reza, EGHTESADI ALI. The Environmental Effects of Skidder Traffic and Skidding Directions on Forest Soil Compaction and the Regeneration Establishment Condition in Choob-e-Farim Forests. ECOLOGY OF IRANIAN FOREST[Internet]. 2020;7(14 ):22-30. Available from: https://sid.ir/paper/263104/en

IEEE: Copy

Seyed Reza Mostafanezhad, KAMBIZ ESPAHBODI, Mohammad Reza Pourmadjidian, and ALI EGHTESADI, “The Environmental Effects of Skidder Traffic and Skidding Directions on Forest Soil Compaction and the Regeneration Establishment Condition in Choob-e-Farim Forests,” ECOLOGY OF IRANIAN FOREST, vol. 7, no. 14 , pp. 22–30, 2020, [Online]. Available: https://sid.ir/paper/263104/en

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