Evaluation of non-point source pollution reduction by applying Best Management Practices using a SWAT model and QuickBird high resolution satellite imagery

Lee, MiSeon; Park, Geunae; Park, MinJi; Park, Jong Yoon; Lee, JiWan; Kim, Seong-Joon

doi:10.1016/s1001-0742(09)60184-4

Cited by 84 publications

(26 citation statements)

References 18 publications

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“…A commonly used approach in studies with computer models is to create a model that reflects the actual conditions, which is then used as a point of reference, in comparison with scenarios of change developed for the specified area. In this way many authors work [LAURENT, RUELLAND 2011;LEE et al 2010] and this approach was also used in this study.…”

Section: Methodsmentioning

confidence: 99%

The Influence of Permanent Grasslands on Nitrate Nitrogen Loads in Modelling Approach

Śmietanka¹

2014

Journal of Water and Land Development

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The water pollution in areas with intensive agriculture is growing rapidly. Computer model is a tool which can help in finding solutions for water pollution reduction and help in creation of catchment management plans. In this research the SWAT model (Soil and Water Assessment Tool) was used to test the influence of introduction of permanent grasslands into the catchment on nitrate nitrogen load in surface water. Small catchment of upper Zgłowiączka River in central Poland with intensive agriculture was chosen as a test site. Model was fed with data about land use, soils, weather, elevation and management practices and calibrated and validated using flow data and nitrate nitrogen loads data. Then 2 scenarios with land use change were tested. A part of arable land was changed into permanent grasslands. The results show that permanent grasslands are effective in reducing nitrate nitrogen load. The load was reduced by 19% when permanent grasslands constituted 10% of arable land and by 38% with permanent grasslands taking up 20% of arable land.

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Section: Methodsmentioning

confidence: 99%

The Influence of Permanent Grasslands on Nitrate Nitrogen Loads in Modelling Approach

Śmietanka¹

2014

Journal of Water and Land Development

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“…High ratios of pollutant loads could be intercepted by these permanent vegetation zones during flooding events. Considering the significant effects indicated by many previous studies (Betrie et al 2011;Chen et al 2014;Lee et al 2010;Sahu and Gu 2009) that focused on annual or monthly loads, it is easily concluded that filter strips can improve the aquatic environment in different scenarios. However, the higher loads of NPSP, larger discharge and rapider flow during flooding periods will indubitably put larger requirement on the interception.…”

Section: Effects Of Filter Strips On Pollution Mitigationmentioning

confidence: 99%

“…In comparison, constructing filter strips impacts farmers less and would be a relatively easy solution. However, filter strips just intercept the pollutants temporally and have a low cost efficiency because wider strips are required during flooding events than in normal periods (Lee et al 2010;Chen et al 2014). Thus, filter strips are palliative for mitigating the deterioration of water quality, while land use changes and improvements in agricultural technology will be more significant and critical long-term solutions for the control of pollution sources.…”

Section: Effects Of Filter Strips On Pollution Mitigationmentioning

confidence: 99%

“…One common type of BMP used to intercept and remove nutrient pollutants is the construction of filter strips. Generally, 5-to 10-m-wide filter strips have been simulated along river channels in different watersheds worldwide, and their NPSP removal efficiency has been assessed (Volk et al 2009;Parajuli et al 2008;Lee et al 2010). In China, the current principal objective for surface water management was put forward by the National Twelfth Five-Year Plan (2011-2015, hereafter called NTFYP), which has targeted 10 % reductions in ammonium and oxynitride loads by 2015.…”

Section: Introductionmentioning

confidence: 99%

“…The soil and water assessment tool (SWAT) developed by the United States Department of Agriculture (USDA) has been widely employed to simulate NPSP because this physics-based model incorporates land-cover, topography, soil characteristics, climate conditions, and land use management, and can effectively simulate the transport of water, sediments and nutrients (Lee et al 2010;Lam et al 2010). However, very few studies have focused on flooding events, leaving a void for us to explore the nutrient transport mechanisms during these events.…”

Section: Introductionmentioning

confidence: 99%

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Simulating the impact of flooding events on non-point source pollution and the effects of filter strips in an intensive agricultural watershed in China

et al. 2014

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Non-point source pollution (NPSP) has become a critical pollution source after many improvements in point source pollution treatment have been made, particularly in China, due to intensive agricultural activities. Moreover, the impact of NPSP on surface water quality is significantly affected by extreme events, such as flooding. In this study, the soil and water assessment tool model was used to characterize the behaviours of NPSPs and to evaluate the effect of filter strips during flooding periods. The results showed that a flooding event in 2002 caused by a long duration of rainfall (event_1) contributed approximately 40 % of the annual sediment and organic N yield and 18.4 % of nitrate N yield. In 2007, more than 50 % of the annual sediment and organic N and 20 % of nitrate N export were caused by a flooding event due to heavy rainfall (event_2). The simulation results highlighted the severe threat of flooding events on aquatic environments. Furthermore, filter strips of different widths were simulated in these flooding scenarios to test their mitigation effects on the deterioration of surface water quality during these two events, and the 10-m filter strip did decrease more than 30-40 % of the loads of all NPSPs. Our study stresses that more attention should be paid to assessing the impact of flooding events on water quality management measures and pollution loads, as well as the effect of management practices on both aquatic and terrestrial ecosystems to develop sustainable water and soil resources.

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Efficiencies of best management practices in reducing nitrate pollution of the Sebdou River, a semi‐arid Mediterranean agricultural catchment (North Africa)

Zettam

Briak

Kebede

et al. 2021

River Research & Apps

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A major problem facing the water sector in Algeria is deteriorating water quality, which is strongly influenced by nutrient inputs to agricultural watersheds. To mitigate the effects of agricultural activities and enhance water quality, this study considered the impact of different best management practices (BMPs) in agriculture. The objective of the research was to evaluate the impacts of various agricultural BMPs on nitrate losses in the Sebdou catchment in north-west Africa using the Soil and Water Assessment Tool (SWAT) model in order to identify and recommend the most appropriate BMP. The study was carried out in two parts: first, the SWAT model was calibrated and validated to simulate discharge and nitrate losses at the outlet of the catchment, and second, the calibrated model was used to assess the effects of BMPs on nitrate losses. The hydrological modelling fitted well with the observed data for the calibration and validation periods (NSE between 0.63 and 0.65 and R 2 between 0.80 and 0.92). Nitrate simulation was also satisfactory (NSE = 0.58 and R 2 = 0.58), with the average nitrate exports at the outlet varying between 136 and 149 t N year À1 . Agricultural tillage practices were the main N input and plant uptake was the main N output. The simulation results of BMP scenarios (contour farming, strip cropping and terracing) showed a significant decrease in nitrate quantity in soil, nitrate yield in surface run-off and nitrate exports. The maximum reduction was observed from the use of parallel terraces, which reduced nitrate in soil by 17% (41 kg ha À1 ) and decreased nitrate flux exportation to below 133 t N year À1 (a reduction of about 11%). This study provided useful information for implementation of the most effective agricultural BMPs in the catchment for stakeholders who are interested in soil and water management.

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Evaluation of non-point source pollution reduction by applying Best Management Practices using a SWAT model and QuickBird high resolution satellite imagery

Cited by 84 publications

References 18 publications

The Influence of Permanent Grasslands on Nitrate Nitrogen Loads in Modelling Approach

The Influence of Permanent Grasslands on Nitrate Nitrogen Loads in Modelling Approach

Simulating the impact of flooding events on non-point source pollution and the effects of filter strips in an intensive agricultural watershed in China

Efficiencies of best management practices in reducing nitrate pollution of the Sebdou River, a semi‐arid Mediterranean agricultural catchment (North Africa)

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