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Articles by Shahriar Sobhe Zahedi
Total Records ( 2 ) for Shahriar Sobhe Zahedi
  Ghassem Habibi Bibalani , Jalal Mahmodi , Zia Bazhrang and Shahriar Sobhe Zahedi
  A pulling effect by side roots is one way in which roots help to side in-plane strong of a little depth soil mass. In contrast to the effect of vertically-enlarge roots, whereby soil is strengthened by an increase in its shear strength, the pulling effect strengthens the soil by increasing the tensile strength of the rooted soil zone. To verify whether or not a pulling effect exists in the root system of Oak (Quercus castaneaefolia L.) in the Roudsar, N Iran and to study the importance and size of this effect, a direct in situ test was led at a site in the Rahimabad Forests. The results from the site showed that, in the surface soil (0-35 cm), Side roots can provide a pull force of up to 264.61 N (Newton) over a vertical cross-section area of 20-50 cm2, or enhance in the pulling stability of the rooted soil by 30.96%. The test results suggest that, together with the Oak vertical roots, which keep the little depth rooted soil zone to the deep and more stable soil mass, the side roots of the Oak, with their pulling effect, are able to make less against little depth instability in the forest slopes, such as little depth slide, to a certain degree.
  Ghassem Habibi Bibalani , Abolfazl Aghajanzadeh Golshani , Shahriar Sobhe Zahedi and Zia Bazhrang
  Roots of plants stable soils on slope and provide resistance against the forces that improve slope instability. In northwest of Iran (East Azarbayjan state), rangelands were changed to agricultural land use; this vegetation is unsuitable vegetation on slope to stable them. Restoration of rangelands vegetation effects, largely to improve slope health, is focussed on replacing agricultural plants with rangelands species, but little is known about their slope stabilizing characteristics. We studied 4 rangelands plant species to determine these characteristics. Data available for 2-and 3-year-old shrub plants indicate that Gavan (Astragalus raddei) has high root spread and rooting depth. Data for older plants of this species will be used in improve landslide threshold models for vegetated slopes.
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