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Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands

Catchments; Geomorphology; Soils; Watersheds; Drainage area; Power law distribution; Runoffaggregation; Soil loss; Stream power; Shear stress; drainage; geomorphology; GIS; methodology; power law distribution; river basin; runoff; shear stress; soil erosion; upland region; vulnerability; Cameroon

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Main Authors: Kok K., Sidek L.M., Jung K., Kim J.-C.
Other Authors: 55812179300
Format: Article
Published: MDPI AG 2023
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spelling my.uniten.dspace-238662023-05-29T14:52:33Z Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands Kok K. Sidek L.M. Jung K. Kim J.-C. 55812179300 35070506500 37015343400 57191682267 Catchments; Geomorphology; Soils; Watersheds; Drainage area; Power law distribution; Runoffaggregation; Soil loss; Stream power; Shear stress; drainage; geomorphology; GIS; methodology; power law distribution; river basin; runoff; shear stress; soil erosion; upland region; vulnerability; Cameroon The main purpose of this study is to propose a methodology for identifying vulnerable regions in the Cameron Highlands that are susceptible to soil loss, based on runoffaggregation structure and the energy expenditure pattern of the natural river basin, within the framework of power law distribution. To this end, three geomorphologic factors, namely shear stress and stream power, as well as the drainage area of every point in the basin of interest, have been extracted using GIS, and then their complementary cumulative distributions are graphically analyzed by fitting them to power law distribution, with the purpose of identifying the sensitive points within the basin that are susceptible to soil loss with respect to scaling regimes of shear stress and stream power. It is observed that the range of vulnerable regions by the scaling regime of shear stress is much narrower than by the scaling regime of stream power. This result seems to suggest that shear stress is a scale-dependent factor, which does not follow power law distribution and does not adequately reflect the energy expenditure pattern of a river basin. Therefore, stream power is preferred as a more reasonable factor for the evaluation of soil loss. The methodology proposed in this study can be validated by visualizing the path of soil loss, which is generated from the hillslope process (characterized by the local slope) to the valley through a fluvial process (characterized by the drainage area as well as the local slope). � 2018 by the authors. Final 2023-05-29T06:52:33Z 2023-05-29T06:52:33Z 2018 Article 10.3390/w10040396 2-s2.0-85044572549 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044572549&doi=10.3390%2fw10040396&partnerID=40&md5=23b1eb88be1f1369987c1ef85253c9a9 https://irepository.uniten.edu.my/handle/123456789/23866 10 4 396 All Open Access, Gold, Green MDPI AG Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Catchments; Geomorphology; Soils; Watersheds; Drainage area; Power law distribution; Runoffaggregation; Soil loss; Stream power; Shear stress; drainage; geomorphology; GIS; methodology; power law distribution; river basin; runoff; shear stress; soil erosion; upland region; vulnerability; Cameroon
author2 55812179300
author_facet 55812179300
Kok K.
Sidek L.M.
Jung K.
Kim J.-C.
format Article
author Kok K.
Sidek L.M.
Jung K.
Kim J.-C.
spellingShingle Kok K.
Sidek L.M.
Jung K.
Kim J.-C.
Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands
author_sort Kok K.
title Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands
title_short Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands
title_full Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands
title_fullStr Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands
title_full_unstemmed Application of geomorphologic factors for identifying soil loss in vulnerable regions of the Cameron Highlands
title_sort application of geomorphologic factors for identifying soil loss in vulnerable regions of the cameron highlands
publisher MDPI AG
publishDate 2023
_version_ 1806427862576660480
score 13.214268

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