Analysis of the efficacy and cost-effectiveness of best management practices for controlling sediment yield: A case study of the Joumine watershed, Tunisia

Mtibaa, Slim; Hotta, Norifumi; Irie, Mitsuteru

doi:10.1016/j.scitotenv.2017.10.290

Cited by 64 publications

(30 citation statements)

References 61 publications

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“…Regarding the check dam restoration, almost 90% of the sediment was found to be retained at the dams. Mtibaa et al (2018) [37] proved that the highest sediment yield reductions were achieved by structural BMPs. Check dams also reduced the TN by 15% and the TP by 22%.…”

Section: Individual Bmpsmentioning

confidence: 99%

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Assessing the Impact of Best Management Practices in a Highly Anthropogenic and Ungauged Watershed Using the SWAT Model: A Case Study in the El Beal Watershed (Southeast Spain)

et al. 2019

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Best management practices (BMPs) provide a feasible solution for non-point source pollution problems. High sediment and nutrient yields without retention control result in environmental deterioration of surrounding areas. In the present study, the soil and water assessment tool (SWAT) model was developed for El Beal watershed, an anthropogenic and ungauged basin located in the southeast of Spain that drains into a coastal lagoon of high environmental value. The effectiveness of five BMPs (contour planting, filter strips, reforestation, fertilizer application and check dam restoration) was quantified, both individually and in combination, to test their impact on sediment and nutrient reduction. For calibration and validation processes, actual evapotranspiration (AET) data obtained from a remote sensing dataset called Global Land Evaporation Amsterdam Model (GLEAM) were used. The SWAT model achieved good performance in the calibration period, with statistical values of 0.78 for Kling–Gupta efficiency (KGE), 0.81 for coefficient of determination (R2), 0.58 for Nash–Sutcliffe efficiency (NSE) and 3.9% for percent bias (PBIAS), as well as in the validation period (KGE = 0.67, R2 = 0.83, NS = 0.53 and PBIAS = −25.3%). The results show that check dam restoration is the most effective BMP with a reduction of 90% in sediment yield (S), 15% in total nitrogen (TN) and 22% in total phosphorus (TP) at the watershed scale, followed by reforestation (S = 27%, TN = 16% and TP = 20%). All effectiveness values improved when BMPs were assessed in combination. The outcome of this study could provide guidance for decision makers in developing possible solutions for environmental problems in a coastal lagoon.

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Section: Individual Bmpsmentioning

confidence: 99%

“…The combination of BMPs can be more effective than individual BMPs [37]. Based on the action scale, three combinations of BMPs were implemented in the SWAT to assess their effectiveness to reduce sediment and nutrients (Table 4).…”

Section: Bmp Combinationmentioning

confidence: 99%

Assessing the Impact of Best Management Practices in a Highly Anthropogenic and Ungauged Watershed Using the SWAT Model: A Case Study in the El Beal Watershed (Southeast Spain)

et al. 2019

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“……where R is the parameter for rainfall erosivity (MJ•mm•( hm 2 •h•a) -1 ), P i represents the average monthly rainfall (mm) for each month of the year, and P is the average annual rainfall (mm) over a certain time interval (Fig. 3a).…”

Section: Calculation and Results Of Each Factormentioning

confidence: 99%

“…Soil erosion by water is an important part of land ecological change and global environmental change [1]. Considered as a multi-factor, multi-level and multiscale geo-scientific problem, soil erosion by water has major adverse effects on agricultural productivity and the sustainable use of surface water resources [2]. Strengthening the prevention and control of soil erosion is a fundamental guarantee to improve the quality of a regional ecological environment.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation of Soil Erosion in the Upper Minjiang River Basin of China Based on Integration of Geospatial Technologies Using RUSLE

Ye¹,

Hua²,

Huang³

et al. 2020

Pol. J. Environ. Stud.

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Soil erosion is an important part of land ecological change and global environmental change. In southern China, the red soil hilly area is a region with serious soil erosion and water and soil loss. In this study, the spatial distribution of soil erosion and its change induced by land use types were obtained with the spatial operation analysis technology of a geographic information system and the revised universal soil loss equation model (RUSLE). The results show that soil erosion is most very lightly eroded in the study area as a whole, and has a wide yet relatively concentrated distribution, namely spatial aggregation distribution. The average soil erosion rate is the highest in Zhenghe County, followed by Wuyishan City, Shunchang County and Changting County, and relatively low in other counties. Further analysis on soil erosion under different land use types shows that erosion is more serious in unused land, orchard, dry land and rural settlements, and less severe in grassland, urban land, woodland and paddy field. This can be explained by the differences in vegetation cover, soil and water conservation measures, and the degree of human disturbance under different land use patterns.

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“…The usefulness of lumped hydrological models for forecasting may be limited by their coarse resolution, the need for long-term historical data for calibration, and an inapplicability to poorly gauged catchments [14]. When the data is limited or there are no gauging stations at the study area, for example precipitation data is missing or there is not enough, numerical models can be applied to generate future data of flow used in models such as HEC-RAS for flood forecasting [65][66][67][68]. However, research on data scarcity or ungauged basins is another fast-growing topic but beyond the scope of this overview.…”

Section: Floodmentioning

confidence: 99%

A General Overview of the Risk-Reduction Strategies for Floods and Droughts

Yang

Liu

2020

Sustainability

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Water is a limited resource but essential to sustaining life and supporting economic development. Only 2.5% of all the water on Earth is freshwater and can be used to meet basic human needs such as a clean supply of water for drinking, cooking, and bathing. Water scarcity is the result of an imbalance between supply and demand. Efficient water resource management is definitely of interest to research and is a practical topic. At the same time, water-related disasters such as floods and droughts cause the loss of life and property. Disasters increase the difficulty of effective water resource management. An increase in climate extremes can also increase the risk of floods and droughts. This overview covers 150 peer-reviewed journal publications from the last twenty years focusing on risk-reduction strategies for floods and droughts. First, a definition and classification of flood and drought was introduced. Second, studies and techniques associated with risk reduction were grouped into three themes and discussed: prediction and warning; monitoring; and impact assessment, response, and management. As a result, many studies were solely focused on, and achieve excellence in, their own themes. Special attention was needed to find in these studies what can convert the adverse impacts such as flood water to positive outcomes such as drought relief. Multidisciplinary cooperation is necessary to achieve sustainability and to adapt to climate change. Finally, advanced techniques such as artificial intelligence (AI) and the internet of things (IoT) were foreseen to have a tremendous impact on future disaster risk reduction.

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Analysis of the efficacy and cost-effectiveness of best management practices for controlling sediment yield: A case study of the Joumine watershed, Tunisia

Cited by 64 publications

References 61 publications

Assessing the Impact of Best Management Practices in a Highly Anthropogenic and Ungauged Watershed Using the SWAT Model: A Case Study in the El Beal Watershed (Southeast Spain)

Assessing the Impact of Best Management Practices in a Highly Anthropogenic and Ungauged Watershed Using the SWAT Model: A Case Study in the El Beal Watershed (Southeast Spain)

Quantitative Evaluation of Soil Erosion in the Upper Minjiang River Basin of China Based on Integration of Geospatial Technologies Using RUSLE

A General Overview of the Risk-Reduction Strategies for Floods and Droughts

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