EO-data and remote sensing integration for water erosion modelling and mapping in North Tunisia: a case study of Medjerda watershed DOI Creative Commons
Dhouha Ben Othman,

Ershad Ahmed,

Taoufik Hermassi

et al.

Geomatics Natural Hazards and Risk, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 29, 2024

Understanding, mapping and modelling of water erosion process become a serious concern for soil conservation practitioners, as well decision-makers concerned with natural resource management agricultural policies. The current research aims to map quantify rates in the Upper-valley Medjerda Watershed Northern Tunisia. A systematic method incorporating three models (RUSLE: revised loss equation, FAO: food organization, EPM: potential model) was adopted. Indeed, multi-sources earth observation data (EO-data), geographic information systems (GIS), remote sensing (RS) techniques were integrated into process. Mean annual estimated by RUSLE, FAO, EPM vary between 18 71 t/ha/yr. Examination methods reveals that values both FAO EMP are more consistence than RUSLE estimates. about 51% 78% study area is affected moderate very high erosive dynamic. Moreover, six depending on drainage morphometric characteristics adopted calculate sediment delivery ratio (SDR). Key results indicate Maner's SDR model best one yield estimation. findings this work may be helpful mitigation purposes.

Language: Английский

Integrative hydrologic modelling of soil and water conservation strategies: a SWAT-based evaluation of environmental resilience in the Merguellil watershed, Tunisia DOI Creative Commons
Taoufik Hermassi, Fathia Jarray,

Waad Tlili

et al.

Frontiers in Water, Journal Year: 2025, Volume and Issue: 7

Published: Feb. 4, 2025

Introduction Analyzing the hydrological dynamics and assessing impact of Soil Water Conservation (SWC) techniques provides crucial insights for developing region-specific conservation strategies advancing effective watershed management. Methods A multi-objective calibration concept was applied to Assessment Tool (SWAT) model, where simultaneous across andits sub-watersheds performed using multiple objective criteria. This study investigates SWC measures on Merguellil watershed, Central Tunisia. The research includes a sensitivity analysis, as well validation SWAT revealing seven sensitive parameters. Results discussion During (2000-2012), NSE 0.82 R 2 0.9, RSR 0.19 PBIAS 11.62%. In (2013–2020), 0.81 remained 0.22 10.96%, indicating strong correlation. multi-watershed were analyzed in two representative (SW 8 SW 16) present good agreement between simulated observed values. Simulating model with without reveals consistent reduction surface runoff, notably central subbasins values exceeding 15%. decrease is attributed vegetation cover, effectiveness practices. contrast, lacking interventions exhibit minimal runoff changes. further assesses soil erosion, negative percentage differences that indicate erosion over 30% following implementation these techniques. subbasins, marked by olive trees strategic conservation, demonstrate substantial decreases, emphasizing successful control efforts. Groundwater recharge analysis shows practices, along favorable conditions, significantly enhance percolation groundwater recharge, highlighting their beneficial impact. Variations percentages reflect nuanced responses influenced anthropogenic natural factors. Erosion hotspots identified sediment yield (SY) data. Six categorized from moderate severe severity classes pinpointed hotspots, requiring immediate intervention. Finally, underscores vital role mitigating reducing enhancing semi-arid watershed. findings emphasize need tailored considering geographical variations management sustainability.

Language: Английский

Citations

1
Modeling soil erosion for sustainable landscape management using RUSLE in the landscapes of Abaya-Chamo Sub-Basin, Ethiopia DOI Creative Commons

Melku Dagnachew Alemu,

Fanuel Laekemariam,

Sisay A. Belay

et al.

Modeling Earth Systems and Environment, Journal Year: 2025, Volume and Issue: 11(3)

Published: March 12, 2025

Language: Английский

Citations

0
Gender and age variations in academic self-concept and academic achievement of distance learners at the college of distance education: a quantitative cross-sectional study DOI Creative Commons

Rebecca Kaedabi-Donkor,

Mark Owusu Amponsah,

Bakari Yusuf Dramanu

et al.

Cogent Education, Journal Year: 2025, Volume and Issue: 12(1)

Published: April 18, 2025

Language: Английский

Citations

0
Soil Erosion assessment using SWAT, in relation withLand use, Agricultural practices, and future climate change in a semi-arid catchment in Tunisia. DOI Creative Commons

Aida Benrhouma,

Taoufik Hermassi, Fathia Jarray

et al.

Environmental Research Communications, Journal Year: 2024, Volume and Issue: 6(10), P. 105028 - 105028

Published: Oct. 1, 2024

Abstract Soil erosion is a severe environmental concern arising from intensive agricultural uses, land degradation, and anthropogenic activities. This problem threatens productivity sustainable development, particularly in emerging countries. Therefore, evaluating soil essential conservation, planning, management on watershed or basin scale. study aims to assess the of loss El Gouazine Watershed, central Tunisia, using water assessment tool (SWAT). We define impact conservation implementation combined with climate change scenario. identified spatial distribution rates based properties, topography, use. The observed specific rate estimated at 1.6 t.ha −1 .yr , whereas according SWAT model, average 1.4 . Furthermore, obtained results highlight importance slope factor affecting severity watershed. It was also demonstrated that it’s urgent prioritize other measures such as contour cropping agriculture, enhance strengthen soils’ resistance against detachment due discharge water. In this context, research found these techniques decrease considerably by 22% for strip cropping, 33% No-tillage, 72% bench terracing. Moreover, farming techniques, contribute same time amelioration balance reducing evapotranspiration enhancing storage. To go further forecast worst-case scenario RCP 8.5 conducted. an overview future patterns obtained. noticed then annual until 2050 prominent increase 2051 2100.

Language: Английский

Citations

1
Land-Use-Change-Driven Erosion and Sediment Transport in the Yaqui River Sub-Basin (Mexico): Insights from Satellite Imagery and Hydraulic Simulations DOI Creative Commons
Omar S. Areu-Rangel, Miguel Ángel Hernández-Hernández, Rosanna Bonasia

et al.

Land, Journal Year: 2024, Volume and Issue: 13(11), P. 1846 - 1846

Published: Nov. 6, 2024

Soil erosion and sediment transport are significant concerns in the Yaqui River sub-basin northwest Mexico, driven by land use changes environmental degradation. This study aims to evaluate processes between 2000 2020 using a combination of satellite imagery numerical simulations with Iber software (Version 2.5.2). The primary objective is assess impacts changes, particularly conversion forest grassland, on rates transport. Satellite images from were analyzed detect cover while Iber’s module was used simulate patterns based Meyer–Peter Müller equation for bedload Hydrological topographical data incorporated provide accurate flow velocity, depth, potential. results reveal 35.3% reduction cover, leading increased steep areas. Simulation predictions highlighted areas high future potential, which at risk further soil loss if current trends continue. Flow velocity increased, contributing riverbank destabilization higher yield, posing infrastructure such as Álvaro Obregón Dam. underscores need targeted control measures sustainable management practices mitigate risks protect vital Basin.

Language: Английский

Citations

1
Investigating soil erosion using cesium-137 tracer under two different cultivated lands in El Kbir watershed, Tunisia DOI
Amira Gdiri, Lilia Ben Cheikha,

Mansour Oueslati

et al.

Euro-Mediterranean Journal for Environmental Integration, Journal Year: 2024, Volume and Issue: 9(2), P. 783 - 796

Published: April 22, 2024

Language: Английский

Citations

1
EO-data and remote sensing integration for water erosion modelling and mapping in North Tunisia: a case study of Medjerda watershed DOI Creative Commons
Dhouha Ben Othman,

Ershad Ahmed,

Taoufik Hermassi

et al.

Geomatics Natural Hazards and Risk, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 29, 2024

Understanding, mapping and modelling of water erosion process become a serious concern for soil conservation practitioners, as well decision-makers concerned with natural resource management agricultural policies. The current research aims to map quantify rates in the Upper-valley Medjerda Watershed Northern Tunisia. A systematic method incorporating three models (RUSLE: revised loss equation, FAO: food organization, EPM: potential model) was adopted. Indeed, multi-sources earth observation data (EO-data), geographic information systems (GIS), remote sensing (RS) techniques were integrated into process. Mean annual estimated by RUSLE, FAO, EPM vary between 18 71 t/ha/yr. Examination methods reveals that values both FAO EMP are more consistence than RUSLE estimates. about 51% 78% study area is affected moderate very high erosive dynamic. Moreover, six depending on drainage morphometric characteristics adopted calculate sediment delivery ratio (SDR). Key results indicate Maner's SDR model best one yield estimation. findings this work may be helpful mitigation purposes.

Language: Английский

Citations

0