Engineering properties of leucaena leucocephala for prevention of slope failure

Normaniza, O.A. and Barakbah, S.S. and Faisal, H. (2008) Engineering properties of leucaena leucocephala for prevention of slope failure. Ecological Engineering, 32 (3). pp. 215-221. ISSN 0925-8574

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Abstract

The potential of Leucaena leucocephala as an erosion control plant was investigated in terms of its capacity of root reinforcement, root profile and root shear strength. The species studied exhibited extensive, dense rooting and depth of penetration. These aspects, to some extent, could provide surficial as well as deep-seated erosion control. A high water absorption capacity would increase suction, thus potentially extracting water at the greater depth. The soil-root matrix significantly affects cohesion factor but not the angle of friction. The effect varies with increasing depth and age of plant depending on the root length density. After 6 months of growth, the cohesion factor had tremendously increased by two- to five-fold (0.1-0.5 m soil depth). This range almost reached the values of those in the 12-month treatment, indicating a high contribution of the root system to soil-root reinforcement. (C) 2007 Elsevier B.V. All rights reserved.

Item Type: Article
Additional Information: Institute of Biological Sciences, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Soil erosion; Leucaena leucocephala; Root length density; Soil–root matrix; Root reinforcement
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Miss Malisa Diana
Date Deposited: 02 Jul 2013 01:31
Last Modified: 02 Jul 2013 01:31
URI: http://eprints.um.edu.my/id/eprint/6249

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