NDLI: Spatial variations in the $N_{2}$O emissions and denitrification potential of riparian buffer strips in a contaminated urban river

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Spatial variations in the $N_{2}$O emissions and denitrification potential of riparian buffer strips in a contaminated urban river

Content Provider	Scilit
Author	Huang, Xinyu Zhang, Taiping Li, Wenjing Wan, Jinquan Dahlgren, Randy A.
Copyright Year	2013
Description	Spatial variations in the $N_{2}$O emissions and denitrification potential of riparian buffer strips (RBS) in a polluted river were examined. The river received large pollutant inputs from urban runoff and wastewater discharge, resulting in impaired water quality in the river and downstream reservoir. The potential for nitrogen removal by RBS was evaluated by measuring in situ $N_{2}$O emission fluxes in static closed chambers and sediment denitrification potentials with acetylene inhibition techniques. The results showed that $N_{2}$O emission fluxes decreased from the upstream (16.39 $μg/(m^{2}$·h)) to downstream (0.30 $μg/(m^{2}$·h)) sites and from the water body to upland sites. The trend in decreasing $N_{2}$O emission fluxes in the downstream direction was mainly associated with sediment/soil textures (clay loam→sandy soil) and sediment/soil water contents and was also related to the vegetation along the RBS and nutrients in the sediments/soils. The correlation coefficient was highest (r=0.769) between the $N_{2}$O emission flux and sediment/soil water content. Sediment/soil denitrification potentials under N-amended and ambient conditions were higher (highest 32.86 mg/(kg·h)) for the upstream sites, which were consistent with in situ $N_{2}$O flux rates.
Related Links	https://escholarship.org/content/qt3jr0p0dt/qt3jr0p0dt.pdf?t=o22th6
Ending Page	539
Page Count	11
Starting Page	529
ISSN	02757540
e-ISSN	10290370
DOI	10.1080/02757540.2013.790382
Journal	Chemistry and Ecology
Issue Number	6
Volume Number	29
Language	English
Publisher	Informa UK Limited
Publisher Date	2013-04-30
Access Restriction	Open
Subject Keyword	Journal: Chemistry and Ecology Water Science and Technology N2o Emission Denitrification Potential Riparian Buffer Strips (rbs) Nitrate Removal
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Ecology Ecology, Evolution, Behavior and Systematics

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