Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China

Xian, Chaofan; Ouyang, Zhiyun; Li, Yanmin; Xiao, Yang; Ren, Yangang

doi:10.1007/s11356-016-7498-z

Cited by 28 publications

(6 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the differences in sewage treatment technology and nutrient removal efficiency, sewage discharge may also lead to spatial and temporal changes in nutrient fluxes in urbanized basins. This heterogeneity results in differences in the effects of land use types within different catchment units on water quality (Fashae et al 2019;Hale et al 2015;Xian et al 2016). Heavy rains and other events in urban areas often lead to a large amount of water rapidly passing through the watershed carrying with it more nutrients, sediments, and pollutants (Zhao, 2018).…”

Section: Impact Of Urban Land On Water Qualitymentioning

confidence: 99%

What is the relationship between land use and surface water quality? A review and prospects from remote sensing perspective

Cheng

Fei

Shi

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

Good surface water quality is critical to human health and ecology. Land use determines the surface water heat and material balance, which cause climate change and affect water quality. There are many factors affecting water quality degradation, and the process of influence is complex. As rivers, lakes, and other water bodies are used as environmental receiving carriers, evaluating and quantifying how impacts occur between land use types and surface water quality is extremely important. Based on the summary of published studies, we can see that (1) land use for agricultural and construction has a negative impact on surface water quality, while woodland use has a certain degree of improvement on surface water quality; (2) statistical methods used in relevant research mainly include correlation analysis, regression analysis, redundancy analysis, etc. Different methods have their own advantages and limitations; (3) in recent years, remote sensing monitoring technology has developed rapidly, and has developed into an effective tool for comprehensive water quality assessment and management. However, the increase in spatial resolution of remote sensing data has been accompanied by a surge in data volume, which has caused difficulties in information interpretation and other aspects.

show abstract

Section: Impact Of Urban Land On Water Qualitymentioning

confidence: 99%

What is the relationship between land use and surface water quality? A review and prospects from remote sensing perspective

Cheng

Fei

Shi

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…In the head section, NO 3 − dominated the DIN in river water, showing a mean NH 4 + ‐N:NO 3 − ‐N value of 0.1 ± 0.1 (Figure 2), typical for pristine or unpolluted streams (Xian et al., 2016). Mechanistically, NO 3 − is more mobile and readily leached than NH 4 + from soils to the headstreams (Mayer et al., 2002).…”

Section: Discussionmentioning

confidence: 99%

“…As shown in Figure S3 in Supporting Information , δ 15 N NH4+ and δ 15 N NO3‐ were higher in urban and downstream sections than head and suburban sections. Elevated δ 15 N NH4+ in urban and downstream sections could be caused by (a) the 15 N‐enriched dissolved organic N (DON) from sewage, (b) the volatilization of NH 3 in river water, and (c) the biological N transformations, for example, assimilation and nitrification (Jordan et al., 1997; Xian et al., 2016). Elevated δ 15 N NO3‐ might be derived from sewage directly or caused by high δ 15 N NH4+ as the product of nitrification (Jordan et al., 1997).…”

Section: Discussionmentioning

confidence: 99%

Elevated Nitrate Preference Over Ammonium in Aquatic Plants by Nitrogen Loadings in a City River

Guo

et al. 2022

JGR Biogeosciences

View full text Add to dashboard Cite

Nitrogen (N) discharged from domestic sewage has long deteriorated the water quality of urban rivers and caused the eutrophication of downstream aquatic ecosystems (Hobbie et al., 2017). This is particularly severe in many developing cities and countries because of their low rates of wastewater treatment (Cloern et al., 2002). Anthropogenic nitrogen (N) pollutants discharged into urban rivers would significantly change concentrations and proportions of ammonium (NH 4 + ) and nitrate (NO 3 − ), which are important nitrogen (N) sources for aquatic biota (Anisfeld et al., 2007;Mayer et al., 2002). In river ecosystems, the assimilation of ammonium (NH 4 + ) and nitrate (NO 3 − ) by aquatic plants plays a vital role in retaining or removing anthropogenic N pollutants and regulating river primary productivity and ecological functions (Howarth et al., 2011;Miyajima et al., 2009;Peipoch et al., 2014). Within the framework of river N biogeochemistry, relatively more studies have been conducted on river N chemistry and microbial processes with less on plant N-use processes.Aquatic plants are diverse in species and rely on ammonium (NH 4 + ) and nitrate (NO 3 − ) as dominant N sources (Adamec, 2010;Schmidt et al., 2018). Physiological indices (e.g., nutrient concentrations, enzyme activities, and isotopic compositions) of aquatic plants have been measured to indicate river N pollution (Dailer et al., 2010;Schmidt et al., 2018). Total N (TN) contents in aquatic plants have been reported to indicate the elevated N availability or N loadings in river water (Baker et al., 2010;Benson et al., 2008). However, how plant Total N (TN) contents respond to river N loadings remains uncertain for two major reasons. First, plants often differ in N-uptake abilities, while the variability of Total N (TN) contents among different river plants and their sensitivity

show abstract

“…These sites were nearly located in the 66.7%). In these areas, wastewater treatment plants were highly efficient (Xian et al, 2016), as well as the management practices, such as channel cleanout, which was wholesome. Therefore, manure & sewage in these clusters were almost sewage from WWTPs emissions in the wet season.…”

Section: Source Apportionment Through Statistical Analysismentioning

confidence: 99%

Contribution of Nitrogen Sources to Streams in Mixed-use Watershed Varies Seasonally in a Temperate Region

Lin

Liu

Xiao

et al. 2021

Preprint

View full text Add to dashboard Cite

The Beiyun river flows through a hot spot region of Beijing-Tianjin-Hebei in China that serves a majority of occupants. However, the region experiences severe nitrate pollution, posing a threat to human health due to inadequate self-purification capacity. In that context, there is an urgent need to assess nitrate levels in this region. Herein, we used δ15N-NO3, δ18O-NO3 isotopes analysis, and stable isotope analysis model to evaluate the nitrate source apportionment in the Beiyun river. A meta-analysis was then used to compare the potential similarity of nitrate sources among the Beiyun riverine watershed and other watersheds. Results of nitrate source apportionment revealed that nitrate originated from the manure & sewage (contribution rate: 89.6%), soil nitrogen (5.9%), and nitrogen fertilizer (3.9%) in the wet season. While in the dry season, nitrate mainly originated from manure & sewage (91.6%). Further, different land-use types exhibited distinct nitrate compositions. Nitrate in urban and suburban areas mostly was traced from manure & sewage (90.5% and 78.8%, respectively). Notably, the different nitrate contribution in the rural-urban fringe and plant-covered areas were manure & sewage (44.3% and 32.8%), soil nitrogen (26.9% and 35.7%), nitrogen fertilizer (23.5% and 29.4%), and atmospheric deposition (5.3% and 2.0%). Through a meta-analysis, we found nitrogen fertilizer, soil nitrogen, and manure & sewage as the main nitrate sources in the Beiyun riverine watershed or the other similar complex watersheds in the temperate. Thus, this study provides a scientific basis for nitrate source apportionment and nitrate preventive management in watersheds with complex land-use types in temperate regions.

show abstract

Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China

Cited by 28 publications

References 34 publications

What is the relationship between land use and surface water quality? A review and prospects from remote sensing perspective

What is the relationship between land use and surface water quality? A review and prospects from remote sensing perspective

Elevated Nitrate Preference Over Ammonium in Aquatic Plants by Nitrogen Loadings in a City River

Contribution of Nitrogen Sources to Streams in Mixed-use Watershed Varies Seasonally in a Temperate Region

Contact Info

Product

Resources

About