Targeting priority management areas for multiple pollutants from non-point sources

Chen, Lei; Wei, Guoyuan; Zhong, Yulong; Wang, Guobo; Shen, Zhenyao

doi:10.1016/j.jhazmat.2014.08.012

Cited by 21 publications

(6 citation statements)

References 47 publications

(61 reference statements)

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“…Some studies suggest placing BMPs in critical source areas, which are areas with land uses that tend to generate pollutants and/or high hydrologic connectivity to sensitive receiving waters. − Indeed, a study by Du et al in the Liu River Watershed in China found that implementing conservation tillage and installing vegetated filters in critical source areas successfully reduced TN and TP loads in a small agricultural watershed. Models could be used to help identify optimal locations for BMP placement. , The increasing availability of high-resolution topography and soil data will likely improve opportunities for spatially explicit modeling and placement of BMPs.…”

Section: Discussionmentioning

confidence: 99%

“…These subsidies are generally provided for a range of practices, even those that may have unknown impacts on diffuse nutrient management either due to the uncertainty in their performance, or due to the fact that subsidies are not scaled according to actual nutrient reductions . Furthermore, the ongoing maintenance of implemented BMPs in large watersheds is further complicated when the watershed is comprised of multiple statutory bodies, leading to differing policy approaches and budgetary constraints within the same watershed …”

Section: Discussionmentioning

confidence: 99%

“…Models could be used to help identify optimal locations for BMP placement. 98,99 The increasing availability of high-resolution topography and soil data will likely improve opportunities for spatially explicit modeling and placement of BMPs.…”

Section: Discussionmentioning

confidence: 99%

“…155 Furthermore, the ongoing maintenance of implemented BMPs in large watersheds is further complicated when the watershed is comprised of multiple statutory bodies, leading to differing policy approaches and budgetary constraints within the same watershed. 98 We therefore require research with a greater emphasis on convergent or transdisciplinary approaches that focuses on identifying and quantifying the impact of social, economic, and political drivers of BMP implementation and maintenance by landholders and communities. For instance, future research should compare biophysical data on BMP performance at the watershed scaleeither through monitoring or meta-anal-ysiswith social and economic survey data on those implementing BMPs and impacted by BMPs.…”

Section: Lack Of Knowledge About Bmp Functionmentioning

confidence: 99%

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Best Management Practices for Diffuse Nutrient Pollution: Wicked Problems Across Urban and Agricultural Watersheds

Lintern

McPhillips

Winfrey

et al. 2020

Environ. Sci. Technol.

125

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Extensive time and financial resources have been dedicated to address nonpoint sources of nitrogen and phosphorus in watersheds. Despite these efforts, many watersheds have not seen substantial improvement in water quality. The objective of this study is to review the literature and investigate key factors affecting the lack of improvement in nutrient levels in waterways in urban and agricultural regions. From 94 studies identified in the academic literature, we found that, although 60% of studies found improvements in water quality after implementation of Best Management Practices (BMPs) within the watershed, these studies were mostly modeling studies rather than field monitoring studies. For studies that were unable to find improvements in water quality after the implementation of BMPs, the lack of improvement was attributed to lack of knowledge about BMP functioning, lag times, nonoptimal placement and distribution of BMPs in the watershed, postimplementation BMP failure, and socio-political and economic challenges. We refer to these limiting factors as known unknowns. We also acknowledge the existence of unknown unknowns that hinder further improvement in BMP effectiveness and suggest that machine learning, approaches from the field of business and operations management, and long-term convergent studies could be used to resolve these unknown unknowns.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Lack Of Knowledge About Bmp Functionmentioning

confidence: 99%

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Best Management Practices for Diffuse Nutrient Pollution: Wicked Problems Across Urban and Agricultural Watersheds

Lintern

McPhillips

Winfrey

et al. 2020

Environ. Sci. Technol.

125

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“…The "end of pipe" discharge from any known or identifiable sites throughout the water body indicates this. Through regular monitoring at specified river locations, point source pollution is extremely straightforward to analyses and reduce (Chen et al, 2014). For example, the construction site and livestock area, where the silt will be carried from the original location to the replacement line system, pollute the water.…”

Section: Point Source Managementmentioning

confidence: 99%

Impact of Suspended Sediment on Pahang River Development Using Geographic Information System

Mustaffa

Kamarudin

Toriman

et al. 2023

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The measurement of different characteristics of a stream, including integrated water resource management, is dependent on sediment transport mechanisms. On the Pahang River, studies explored the spatial interpolation pattern of suspended sediment (SS) and water resource management. Sedimentation issues in the Pahang River have a significant impact on water resource management in the Pahang River basin. Furthermore, it may have an impact on local water consumption, recreational activities, and other factors, causing the river to become shallow and finally flood. This study was conducted to determine the SS pattern in the Pahang River with the approach of the Geographic Information System (GIS) technique and its significant colour based on spatial analysis. In addition, this study also evaluates the factors and effects of sedimentation through water source management. Three sampling stations from the Department of Irrigation and Drainage (DID) for three years (2000, 2004 and 2008) were selected along the Pahang River, where the parameter measured was suspended sediment (ton/year). The results obtained showed that the Pahang River receives a high amount of SS each year, where the higher amount was at the upper station (Sg. Yap), with an amount of 1876575 ton/year (2000), 613850.1 ton/year (2004) and 3458097 ton/year where it may be affected by sediment re-suspension and runoff from two outlets. Meanwhile, the downstream station (Lubuk Paku) received the least amount of SS, while the midstream station (Temerloh) received the most. The transit's speed and current may have an impact. This study's findings are critical in river and water resource management, especially of water resources for domestic use, ecotourism, river biodiversity, and hydrology.

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Pollutants from Agricultural Activities in the Global South

Kumar,

Choudhury

2024

Biomonitoring of Pollutants in the Global South

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Targeting priority management areas for multiple pollutants from non-point sources

Cited by 21 publications

References 47 publications

Best Management Practices for Diffuse Nutrient Pollution: Wicked Problems Across Urban and Agricultural Watersheds

Best Management Practices for Diffuse Nutrient Pollution: Wicked Problems Across Urban and Agricultural Watersheds

Impact of Suspended Sediment on Pahang River Development Using Geographic Information System

Pollutants from Agricultural Activities in the Global South

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