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Effect of the skid trail cross section and horizontal alignment on forest soil physical properties

Author

Listed:
  • Hossein YAZARLOU

    (Department of Forestry, Faculty of Forest Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran)

  • Aidin PARSAKHOO

    (Department of Forestry, Faculty of Forest Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran)

  • Hashem HABASHI

    (Department of Forest Ecology and Silviculture, Faculty of Forest Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran)

  • Soltan Ali SOLTAUNINEJAD

    (Department of Forestry, Faculty of Forest Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran)

Abstract

Horizontal alignment and cross section characteristics of a skid trail in a ground-based skidding system including curves, wheel ruts and cross slope can impact on the forest soil. In this study the measurement of cross section and vertical alignment of skid trail in Bahramnia forestry plan was done using a levelling instrument. Horizontal alignment of skid trail including straight routes and curves was taken using polar methods. A 3D map of skid trail was produced in AutoCAD Civil3D software. Soil bulk density was measured after sampling the soil with a core sampler. Results showed that in straight routes, soil bulk density increased by increasing the cross slope of skid trail. Moreover, soil porosity decreased with the increasing cross slope. There was a significant difference between cross slopes in soil moisture. On curves, maximum bulk density occurred when the cross slope was 10%. Findings about soil porosity and moisture on curves of skid trails were similar to those of straight routes. Based on our findings, soil bulk density in wheel ruts was significantly lower than that in the middle part of skid trail. Soil bulk density in the silty soil texture of studied skid trails was a little more than ideal bulk density, so it cannot affect and restrict root growth.

Suggested Citation

  • Hossein YAZARLOU & Aidin PARSAKHOO & Hashem HABASHI & Soltan Ali SOLTAUNINEJAD, 2017. "Effect of the skid trail cross section and horizontal alignment on forest soil physical properties," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 63(4), pages 161-166.
    • Handle: RePEc:caa:jnljfs:v:63:y:2017:i:4:id:108-2016-jfs
    DOI: 10.17221/108/2016-JFS
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    References listed on IDEAS

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    1. Ezzati, Sattar & Najafi, Akbar & Yaghini, Masoud & Hashemi, Amir Ala & Bettinger, Pete, 2015. "An optimization model to solve skidding problem in steep slope terrain," Journal of Forest Economics, Elsevier, vol. 21(4), pages 250-268.
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