Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China

Auteur(s) et Affiliation(s)

YANG, L.

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

Graduate University of Chinese Academy of Sciences, Beijing, Chine

YAN, W.

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

MA, P.

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

WANG, J.

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

Description :
This study was performed at 3 eutrophic rivers in Southeast China aiming to determine the magnitude and patterns of dissolved N2O concentrations and fluxes over a seasonal (in 2009) and diurnal (24 h) temporal scale. The results showed that N2O concentrations varied in the Fengle, Hangbu and Nanfei rivers, respectively, in the diurnal study performed during the summer of 2008. The study found that mean N2O concentration and estimated measured from the Nanfei River with serious urban wastewater pollution was significantly higher than those from the Fengle and the Hangbu Rivers with agricultural runoff. The study demonstrated both N2O concentrations and fluxes exhibited seasonal and diurnal fluctuations. In addition, N2O accumulation rates over 3 consecutive days exponentially decreased with time.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2011, vol. 21, n°. 5, p. 820-832, nombre de pages : 13, Références bibliographiques : 42 ref.

Date :
2011

Editeur :
Pays édition : Chine

Langue :
Anglais