Nitrogen in Runoff from Residential Roads in a Coastal Area

Davidson, Eric A.; Savage, K. E.; Bettez, Neil D.; Marino, Roxanne; Howarth, Robert W.

doi:10.1007/s11270-009-0218-2

Cited by 39 publications

(16 citation statements)

References 29 publications

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“…Pollutant concentrations in road runoff varied with land use; the EMCs of TSS, COD, NH 4 , and TP were higher in RA than in AR and IA during rainfall events, especially during the event with a long antecedent dry weather period (Table 3). These findings agree with earlier studies that revealed that RA and IA roads were dominant sources of N and P in road runoff [5,6,15,21,43], and AR were the dominant sources of TSS [21,44,45]. Automobile catalytic converters operate less effectively during the first 1-2 min.…”

Section: Discussionsupporting

confidence: 92%

Effect of Urban Stormwater Road Runoff of Different Land Use Types on an Urban River in Shenzhen, China

Liu

Wang²,

Yang

et al. 2019

Water

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Urban storm runoff is a major source of pollutants in receiving water bodies. To assess the impact of urban stormwater runoff on an urban river, the runoff process of total suspended solids (TSS), chemical oxygen demand (COD), ammonium (NH4), and total phosphorus (TP) were investigated on road surfaces classified as arterial road (AR), residential area (RA), and industrial area (IA) in the Pingshan River (PSR) watershed in Shenzhen, China. Event mean concentration (EMC) was calculated to analyze the water quality of road runoff, and the dimensionless M(V) cumulative curves were used to estimate the course of decreasing concentration of runoff pollutants during each rainfall event. Multicriteria decision making methods (PROMETHEE-GAIA) were used to identify the linkage between runoff pollutants, land use types, and rainfall intensity. The EMCs of COD and TP in runoff exceeded the class IV level of the water quality standard for surface water (China). RA was a major potential source for NH4, COD, and TP in the river. Controlling the first flush is critical to decrease the effect of road runoff on receiving water bodies, as most runoff pollutants in AR, RA, and IA had a first flush effect during heavy rainfall. The specific management measure for runoff pollution varied with land use type. Reducing road TSS concentrations was effective for controlling runoff pollution in AR and RA because NH4, TP, and COD attached to particulate matter. In IA, the collection and reuse of stormwater in the initial rainfall period were effective for reducing the effect of soluble pollutants in runoff on receiving water bodies. This study provides new information for managing urban road stormwater runoff in different land use types.

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Section: Discussionsupporting

confidence: 92%

Effect of Urban Stormwater Road Runoff of Different Land Use Types on an Urban River in Shenzhen, China

Liu

Wang²,

Yang

et al. 2019

Water

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“…Even without increases in N applications to watersheds, hydrologic alterations that route rainfall efficiently into receiving streams lead to predictable increases in storm-borne delivery of N to surface water ecosystems (e.g., Shields et al 2008;Davidson et al 2010). Collectively, enhanced N loading and highly engineered stormwater routing vastly increase loading of N. For much of the nation, the increased storm severity predicted by many climate change models is likely to further exacerbate this trend.…”

Section: Hydrologic Alteration In Managed Ecosystemsmentioning

confidence: 99%

The interactive effects of excess reactive nitrogen and climate change on aquatic ecosystems and water resources of the United States

et al. 2012

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Nearly all freshwaters and coastal zones of the US are degraded from inputs of excess reactive nitrogen (Nr), sources of which are runoff, atmospheric N deposition, and imported food and feed. Some major adverse effects include harmful algal blooms, hypoxia of fresh and coastal waters, ocean acidification, long-term harm to human health, and increased emissions of greenhouse gases. Nitrogen fluxes to coastal areas and emissions of nitrous oxide from waters have increased in response to N inputs. Denitrification and sedimentation of organic N to sediments are important processes that divert N from downstream transport. Aquatic ecosystems are particularly important denitrification hotspots. Carbon storage in sediments is enhanced by Nr, but whether carbon is permanently buried is unknown. The effect of climate change on N transport and processing in fresh and coastal waters will be felt most strongly through changes to the hydrologic cycle, whereas N loading is mostly climate-independent. Alterations in precipitation amount and dynamics will alter runoff, thereby influencing both rates of Nr inputs to aquatic ecosystems and groundwater and the water residence times that affect Nr removal within aquatic systems. Both infrastructure and climate change alter the landscape connectivity and hydrologic residence time Electronic supplementary material The online version of this article

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“…In regions with intensive agriculture (e.g., Denmark), the relative input of N from urban areas is usually negligible (Jeppesen et al, 2007). However, in some countries, such as the United States and Australia, N from urban areas is a key parameter to control the quality of coastal waters (Taylor et al, 2005; Collins et al, 2010; Davidson et al, 2010). The chemical properties of N, as well as the mechanisms for removal of N, differs greatly from that of P. Median concentrations of total N (TN) have been reported as 2.2 mg L −1 for roads and 2.5 mg L −1 for other “high” urban catchments (Duncan, 1999).…”

Section: Nutrients and Organic Mattermentioning

confidence: 99%

A Minimum Data Set of Water Quality Parameters to Assess and Compare Treatment Efficiency of Stormwater Facilities

2011

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Urban stormwater runoff is often of poor quality, impacting aquatic ecosystems and limiting the use of stormwater runoff for recreational purposes. Several stormwater treatment facilities (STFs) are in operation or at the pilot testing stage, but their efficiencies are neither well documented nor easily compared due to the complex contaminant profile of stormwater and the highly variable runoff hydrograph. On the basis of a review of available data sets on urban stormwater quality and environmental contaminant behavior, we suggest a few carefully selected contaminant parameters (the minimum data set) to be obligatory when assessing and comparing the efficiency of STFs. Consistent use of the minimum data set in all future monitoring schemes for STFs will ensure broad-spectrum testing at low costs and strengthen comparability among facilities. The proposed minimum data set includes: (i) fine fraction of suspended solids (<63 μm), (ii) total concentrations of zinc and copper, (iii) total concentrations of phenanthrene, fluoranthene, and benzo(b,k)fluoranthene, and (iv) total concentrations of phosphorus and nitrogen. Indicator pathogens and other specific contaminants (i.e., chromium, pesticides, phenols) may be added if recreational or certain catchment-scale objectives are to be met. Issues that need further investigation have been identified during the iterative process of developing the minimum data set.

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Nitrogen in Runoff from Residential Roads in a Coastal Area

Cited by 39 publications

References 29 publications

Effect of Urban Stormwater Road Runoff of Different Land Use Types on an Urban River in Shenzhen, China

Effect of Urban Stormwater Road Runoff of Different Land Use Types on an Urban River in Shenzhen, China

The interactive effects of excess reactive nitrogen and climate change on aquatic ecosystems and water resources of the United States

A Minimum Data Set of Water Quality Parameters to Assess and Compare Treatment Efficiency of Stormwater Facilities

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