Soil Erosion Analysis using RUSLE Model at the Minitod Area, Penampang, Sabah, Malaysia

Roslee, Rodeano; Sharir, Kamilia

doi:10.1088/1742-6596/1358/1/012066

Cited by 13 publications

(5 citation statements)

References 9 publications

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“…This is main culprit for causing flooding around the Beaufort Floodplain and requires remedial in order reduce the possibility of flooding by ensuring the flow rate of the river reverted back to its original condition. This is the similar outcome from finding by Department of Irrigation and Drainage Sabah [15] where it was found that the floodplain is plagued by alluvial sediments consisting of sand, clay and particles with organic material [19][20][21]. The DID also made it clear among the main issues for this floodplain are flooding, river bank erosion and shallow river mouth [22].…”

Section: Introductionsupporting

confidence: 77%

Positive Changes in Flood Mitigation Through Sand Dredging Works at Padas River and Tributary Based on HEC-RAS Hydrological Modelling

Pirah¹,

Roslee²

2021

IJDNE

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In the recent years, the impacts of floods have gained importance because of the increasing number of people who are affected by its adverse effects, especially in Beaufort area, Sabah, Malaysia. Flood destroyed critical infrastructures that are needed as shelter and also emergency relief for victim. This paper presents the findings of flood modelling undertaken to establish baseline and post mining flooding conditions during upstream storm and combination of upstream and downstream storm, respectively. A hydrologic model was established and calibrated based on 2014 flood. A structural approach by changing the physical dimension through dredging or sand mining between 2m to 3m is used for hydrology modelling is added into the existing floodgates and bunds. The outcome from sustainable sand is prevailing when it is able to reduce flood level for normal flow, upstream case, and both upstream and downstream case. Other findings are changes in velocity, shear and the significantly reduced power generated by the river during flooding.

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Section: Introductionsupporting

confidence: 77%

Positive Changes in Flood Mitigation Through Sand Dredging Works at Padas River and Tributary Based on HEC-RAS Hydrological Modelling

Pirah¹,

Roslee²

2021

IJDNE

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“…At the end of the century under both climate scenarios, the magnitudes of soil loss change were observed the highest in rubber plantation of 52,172 t/ha/yr (RCP 4.5) and 43,409 t/ha/yr (RCP 8.5), followed with the non-tree crop, settlements, and forest (figure 3 and figure 4). Soil erosion was not linked directly to land use but exclusively with heavy precipitation considered to be the main factor, and erosion a mere symptom [3] [5] [6] [7]. In this study, the large amount of soil loss in rubber plantation was due to the increased rainfall under RCP 8.5.…”

Section: Soil Loss Potential Under Climate Change Scenariosmentioning

confidence: 83%

“…This is suggesting that the conservation and management factors were also affected the soil erosion. Steep slopes at the agricultural land [3] and logged [4] areas have also contributed significantly to the high soil erosion rate [5][6][7][8]. Land cover is commonly known to affect soil erosion, as land with permanent vegetation cover typically has lower soil loss and sediment yields when compared to the arable or bare lands [9].…”

Section: Introductionmentioning

confidence: 99%

Soil erosion risk under climate change scenarios: A case study in rural area with varying land uses

Sentian

Herman

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Soil erosion is one of the major issues in the tropics. The erosion is highly affected by the changes in climate and land cover. Future changes in tropical climate, particularly precipitation are expected to influence the potential risks of soil erosion. In the face of rapid changes in rural land cover for agricultural purposes, the combined forcings of land cover and climate changes have been to be a major threat to the soil conservation due to soil erosion. In this study, climate change scenarios at the northern part of Borneo were developed based on the RCP 4.5 and RCP 8.5 climate scenarios using Weather Research Forecast Model (WRF). The future climate projection scenarios of the total precipitation were used to simulate the potential erosion risks in varying land covers in a rural area of Sabah, Malaysia. The RUSLE model was used for soil erosion modelling, which was integrated with IDRISI Selva that allow the analysis and assessment of erosion risk. The variability of future total precipitations in the area of varying land cover types have resulted in varying degree of potential soil erosion risk The average soil loss at the studied area has increased by 262 t/ha/yr with 35.94 % increment in annual precipitation under RCP 8.5 emission scenario. However, under RCP 4.5, 26.65 % decrement in precipitation has reduced the soil loss by 315.1 t/ha/yr. In this rural area, exceptionally high soil erosion was found at steep slopes and thin vegetation covers. Therefore, an appropriate land use planning, soil conservation practices, and strategic adaptation options plan should be created and developed to ensure the sustainability of the soil conservation and enhance rural agricultural productivity.

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“…The capacity of land use to resist soil erosion is dependent on its land cover and use type (Foster et al, 2003;Roslee and Sharir, 2019). According to (Hurni, 1985), different land uses take unlike measurements to resist soil erosion.…”

Section: Factor (Land Cover)mentioning

confidence: 99%

Modeling soil erosion susceptibility and LULC dynamics for land degradation management using geoinformation technology in Debre Tabor district, Northwestern highlands of Ethiopia

Ejegu

Yegizaw

2020

J.Degrade.Min.Land Manage.

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Land degradation manifested in landscape change is triggered by soil erosion and it is a thoughtful environmental threat. Nationally, soil loss costs 23% of the national annual GDP. Thus, identifying and prioritizing land degraded areas for conservation in regional planning and resource conservation is the priority of land degradation management. Therefore, identification of erosion hazard area and land use and/or land cover (LULC) dynamics are the overall objectives of the study. GIS and Remote Sensing technology was used to identify erosion hazard areas. K-factor, R-factor, LS factor, P-factor, and C-factor, parameters were derived from mean rainfall, Digital Elevation Model, soil map, LULC map, and ground truth points of all the parameters used to identify erosion hazard areas. At the last, the aggregate effect of those parameters had been analyzed and erosion hazard areas were identified. The Revised Universal Soil Loss Equation (RUSEL) was employed to estimate the annual soil loss of the area. The analysis result unveils that within 20 years interval cultivated land, urban land, and bare land show that a dramatically increasing and forest land shows that decreasing rate. The district has undergone significant changes. Portions of the study area that has the highest slope gradient, the highest amount of rainfall, and consist of Nitosols on agricultural land are the most erosion hazard areas. Statistically, nearly 49%, 19.78%, 9.58%, and 5.45% of the study area coverage lower than moderate, high, very high, and severe soil erosion class correspondingly. Annually losses on average of 41.07 t ha-1yr-1 soil loss because the area is intensively cultivated and experiences relatively high rainfall, and steep slope. The share of the study area, southern part, and northeastern portion of Debre Tabor district are exposed to high erosion hazard class compared to other parts.

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Soil Erosion Analysis using RUSLE Model at the Minitod Area, Penampang, Sabah, Malaysia

Cited by 13 publications

References 9 publications

Positive Changes in Flood Mitigation Through Sand Dredging Works at Padas River and Tributary Based on HEC-RAS Hydrological Modelling

Positive Changes in Flood Mitigation Through Sand Dredging Works at Padas River and Tributary Based on HEC-RAS Hydrological Modelling

Soil erosion risk under climate change scenarios: A case study in rural area with varying land uses

Modeling soil erosion susceptibility and LULC dynamics for land degradation management using geoinformation technology in Debre Tabor district, Northwestern highlands of Ethiopia

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