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International Journal of Botany
Year: 2008  |  Volume: 4  |  Issue: 3  |  Page No.: 290 - 296

The Side Roots Pulling Effect of Alder (Alnus glutinosa) on River Bank Soil Strong in North Iran

Ghassem Habibi Bibalani, Zia Bazhrang, Hani Mohsenifar and Lila Joodi    

Abstract: To verify whether or not a pulling effect exists in the root system of Alder (Alnus glutinosa) in the Roudsar, North Iran and to study the importance and size of this effect, a direct in situ test was led at a site in the Chaboksar Forests. The results from the site showed that, in the surface soil (0-30 cm), side roots can provide a pull force of up to 450-860 N (Newtons) over a vertical cross-section area of 20-50 cm2, or an enhance in the pulling stability of the rooted soil by 9.8-52.8%. The test results suggest that, together with the Alder vertical roots, which keep the little depth rooted soil zone to the deep and more stable soil mass, the side roots of the Alder, 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.

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