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Bioengineering ; Bending force; Plants; Root density; Soil; Tensile strength.
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Sajad Mahmoudi   , Nabiollah Yarali , Hojatollah Khedrigharibvand * , Fatemeh Azimi , Mohsen Bahmani |
| , h.khedri@sku.ac.ir |
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Abstract: (7 Views) |
This study was conducted to investigate and identify the bioengineering characteristics of the native species Daphne mucronata Royle (Zagros Daphne) in order to evaluate its potential for soil stabilization, erosion control, and application in civil and environmental projects. As a native species adapted to the climatic and edaphic conditions of the region, Daphne mucronata offers a sustainable and low-cost alternative to mechanical and non-biological methods in natural resource management. In this research, to achieve this goal, three key indicators were measured and analyzed: Root Area Ratio (RAR), Root Tensile Strength (RTS), and Stem Flexural Rigidity or Resistance (SFR). Results showed that root density increased from the soil surface down to a depth of 20–30 cm, while it decreased at lower depths. The mean tensile strength of roots was calculated as 17.56 MPa, and the mean force required for stem bending was 130.39 N. Moreover, with increasing root diameter, tensile strength decreased, whereas thicker stems required greater bending force and exhibited lower displacement. These findings indicate that Daphne mucronata with its dense root system in the middle soil layers and stems resistant to flexural forces plays an effective role in slope stabilization, reduction of wind and water erosion, and enhancement of the stability of mountainous ecosystems. The study suggests that this species should be considered for civil and bioengineering projects, especially in the central Zagros region. Utilizing the natural capacities of this species can reduce implementation costs and improve environmental sustainability.
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Article number: 13 |
| Keywords: Bioengineering, Bending force, Plants, Root density, Soil, Tensile strength. |
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Full-Text [PDF 1947 kb]
(5 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2026/01/27 | Accepted: 2026/04/11 | Published: 2026/09/17
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