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Key indicator tools for shallow slope failure assessment using soil chemical property signatures and soil colour variables

Othman, Rashidi and Hasni, Shah Irani and Hj. Baharuddin, Zainul Mukrim and Hashim, Khairusy Syakirin Has-Yun and Mahamod, Lukman Hakim (2017) Key indicator tools for shallow slope failure assessment using soil chemical property signatures and soil colour variables. Environmental Science and Pollution Research, 24 (29). pp. 22861-22872. ISSN 0944-1344 E-ISSN 1614-7499

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Slope failure has become a major concern in Malaysia due to the rapid development and urbanisation in the country. It poses severe threats to any highway construction industry, residential areas, natural resources and tourism activities. The extent of damages that resulted from this catastrophe can be lessened if a long-term early warning system to predict landslide prone areas is implemented. Thus, this study aims to characterise the relationship between Oxisols proper- ties and soil colour variables to be manipulated as key indicators to forecast shallow slope failure. The concentration of each soil property in slope soil was evaluated from two different localities that consist of 120 soil samples from stable and unstable slopes located along the North-South Highway (PLUS) and East-West Highway (LPT). Analysis of variance established highly significant difference (P < 0.0001) between the locations, the total organic carbon (TOC), soil pH, cation exchange capacity (CEC), soil texture, soil chromaticity and all combinations of interactions. The overall CIELAB analysis leads to the conclusion that the CIELAB variables lightness L*, c* (Chroma) and h* (Hue) provide the most information about soil colour and other related soil properties. With regard to the relationship between colour variables and soil proper- ties, the analysis detected that soil texture, organic carbon, iron oxide and aluminium concentration were the key factors that strongly correlate with soil colour variables at the studied area.

Item Type: Article (Journal)
Additional Information: 3842/57607
Uncontrolled Keywords: CIELAB, Soil chemical properties, Shallow slope failure, Early warning system, Key indicator assessment, Oxisols
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QD Chemistry
T Technology > TE Highway engineering. Roads and pavements
T Technology > TE Highway engineering. Roads and pavements > TE177 Roadside development. Landscaping
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Architecture and Environmental Design > Department of Landscape Architecture
Depositing User: Dr rashidi othman
Date Deposited: 11 Oct 2017 16:31
Last Modified: 14 Jun 2021 23:25
URI: http://irep.iium.edu.my/id/eprint/58726

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