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Evaluation of the effect of hydroseeded vegetation for slope reinforcement

A landslide is a significant environmental hazard that results in an enormous loss of lives and properties. Studies have revealed that rainfall, soil characteristics, and human errors, such as deforestation, are the leading causes of landslides, reducing soil water infiltration and increasing the wa...

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Main Authors: Emeka, Okoli Jude, Nahazanan, Haslinda, Kalantar, Bahareh, Khuzaimah, Zailani, Sani, Ojogbane Success
Format: Article
Language:English
Published: Multidisciplinary Digital Publishing Institute 2021
Online Access:http://psasir.upm.edu.my/id/eprint/97171/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/97171/
https://www.mdpi.com/2073-445X/10/10/995
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spelling my.upm.eprints.971712022-09-13T08:13:36Z http://psasir.upm.edu.my/id/eprint/97171/ Evaluation of the effect of hydroseeded vegetation for slope reinforcement Emeka, Okoli Jude Nahazanan, Haslinda Kalantar, Bahareh Khuzaimah, Zailani Sani, Ojogbane Success A landslide is a significant environmental hazard that results in an enormous loss of lives and properties. Studies have revealed that rainfall, soil characteristics, and human errors, such as deforestation, are the leading causes of landslides, reducing soil water infiltration and increasing the water runoff of a slope. This paper introduces vegetation establishment as a low-cost, practical measure for slope reinforcement through the ground cover and the root of the vegetation. This study reveals the level of complexity of the terrain with regards to the evaluation of high and low stability areas and has produced a landslide susceptibility map. For this purpose, 12 conditioning factors, namely slope, aspect, elevation, curvature, hill shade, stream power index (SPI), topographic wetness index (TWI), terrain roughness index (TRI), distances to roads, distance to lakes, distance to trees, and build-up, were used through the analytic hierarchy process (AHP) model to produce landslide susceptibility map. Receiver operating characteristics (ROC) was used for validation of the results. The area under the curve (AUC) values obtained from the ROC method for the AHP model was 0.865. Four seed samples, namely ryegrass, rye corn, signal grass, and couch, were hydroseeded to determine the vegetation root and ground cover’s effectiveness on stabilization and reinforcement on a high-risk susceptible 65° slope between August and December 2020. The observed monthly vegetation root of couch grass gave the most acceptable result. With a spreading and creeping vegetation ground cover characteristic, ryegrass showed the most acceptable monthly result for vegetation ground cover effectiveness. The findings suggest that the selection of couch species over other species is justified based on landslide control benefits. Multidisciplinary Digital Publishing Institute 2021 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/97171/1/ABSTRACT.pdf Emeka, Okoli Jude and Nahazanan, Haslinda and Kalantar, Bahareh and Khuzaimah, Zailani and Sani, Ojogbane Success (2021) Evaluation of the effect of hydroseeded vegetation for slope reinforcement. Land, 10 (10). pp. 1-26. ISSN 2073-445X https://www.mdpi.com/2073-445X/10/10/995 10.3390/land10100995
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A landslide is a significant environmental hazard that results in an enormous loss of lives and properties. Studies have revealed that rainfall, soil characteristics, and human errors, such as deforestation, are the leading causes of landslides, reducing soil water infiltration and increasing the water runoff of a slope. This paper introduces vegetation establishment as a low-cost, practical measure for slope reinforcement through the ground cover and the root of the vegetation. This study reveals the level of complexity of the terrain with regards to the evaluation of high and low stability areas and has produced a landslide susceptibility map. For this purpose, 12 conditioning factors, namely slope, aspect, elevation, curvature, hill shade, stream power index (SPI), topographic wetness index (TWI), terrain roughness index (TRI), distances to roads, distance to lakes, distance to trees, and build-up, were used through the analytic hierarchy process (AHP) model to produce landslide susceptibility map. Receiver operating characteristics (ROC) was used for validation of the results. The area under the curve (AUC) values obtained from the ROC method for the AHP model was 0.865. Four seed samples, namely ryegrass, rye corn, signal grass, and couch, were hydroseeded to determine the vegetation root and ground cover’s effectiveness on stabilization and reinforcement on a high-risk susceptible 65° slope between August and December 2020. The observed monthly vegetation root of couch grass gave the most acceptable result. With a spreading and creeping vegetation ground cover characteristic, ryegrass showed the most acceptable monthly result for vegetation ground cover effectiveness. The findings suggest that the selection of couch species over other species is justified based on landslide control benefits.
format Article
author Emeka, Okoli Jude
Nahazanan, Haslinda
Kalantar, Bahareh
Khuzaimah, Zailani
Sani, Ojogbane Success
spellingShingle Emeka, Okoli Jude
Nahazanan, Haslinda
Kalantar, Bahareh
Khuzaimah, Zailani
Sani, Ojogbane Success
Evaluation of the effect of hydroseeded vegetation for slope reinforcement
author_facet Emeka, Okoli Jude
Nahazanan, Haslinda
Kalantar, Bahareh
Khuzaimah, Zailani
Sani, Ojogbane Success
author_sort Emeka, Okoli Jude
title Evaluation of the effect of hydroseeded vegetation for slope reinforcement
title_short Evaluation of the effect of hydroseeded vegetation for slope reinforcement
title_full Evaluation of the effect of hydroseeded vegetation for slope reinforcement
title_fullStr Evaluation of the effect of hydroseeded vegetation for slope reinforcement
title_full_unstemmed Evaluation of the effect of hydroseeded vegetation for slope reinforcement
title_sort evaluation of the effect of hydroseeded vegetation for slope reinforcement
publisher Multidisciplinary Digital Publishing Institute
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/97171/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/97171/
https://www.mdpi.com/2073-445X/10/10/995
_version_ 1744355309358415872
score 13.211869

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