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Nitrogen dynamics in large shallow eutrophic Lake Chaohu, China
Zhang, M.2; Xu, J.1; Xie, P.1; Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2008-07-01
Source PublicationENVIRONMENTAL GEOLOGY
ISSN0943-0105
Volume55Issue:1Pages:1-8
AbstractTemporal and spatial dynamics of nitrogen in lake and interstitial water were studied monthly in a large shallow, eutrophic lake in subtropical China from October 2002 to September 2003. The distribution of nitrogen was consistent with the idea that high nitrogen concentrations in the western part of the lake resulted from high levels of the nutrients from the surrounding cities through sewage-drainage systems. Nitrate was the predominant form of nitrogen in the overlying water, while ammonium was predominant in the interstitial water, indicating that strong oxidative nutrient regeneration occurred near the sediment-water interface. Nitrate could be an important dissolved inorganic matter source for phytoplankton, which in turn influenced the seasonal variations of nitrate concentrations in lake water. Significant positive correlation between ammonium fluxes and water temperature was observed and could probably be attributed to the intensified ammonification and nitrate reduction with increased temperature. Positive correlation between ammonium fluxes and algae biomass and Chl a concentrations may indicate that phytoplankton was an important factor driving ammonium fluxes in our study lake, and vice versa that higher fluxes of ammonium supported a higher biomass of the phytoplankton.; Temporal and spatial dynamics of nitrogen in lake and interstitial water were studied monthly in a large shallow, eutrophic lake in subtropical China from October 2002 to September 2003. The distribution of nitrogen was consistent with the idea that high nitrogen concentrations in the western part of the lake resulted from high levels of the nutrients from the surrounding cities through sewage-drainage systems. Nitrate was the predominant form of nitrogen in the overlying water, while ammonium was predominant in the interstitial water, indicating that strong oxidative nutrient regeneration occurred near the sediment-water interface. Nitrate could be an important dissolved inorganic matter source for phytoplankton, which in turn influenced the seasonal variations of nitrate concentrations in lake water. Significant positive correlation between ammonium fluxes and water temperature was observed and could probably be attributed to the intensified ammonification and nitrate reduction with increased temperature. Positive correlation between ammonium fluxes and algae biomass and Chl a concentrations may indicate that phytoplankton was an important factor driving ammonium fluxes in our study lake, and vice versa that higher fluxes of ammonium supported a higher biomass of the phytoplankton.
SubtypeArticle
KeywordNitrogen Eutrophic Flux Sediment-water Interface Lake Chaohu
Department[Xu, J.; Xie, P.] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Zhang, M.] Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
Subject AreaEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
DOI10.1007/s00254-007-0957-6
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000256473900001
WOS KeywordSEDIMENT-WATER INTERFACE ; FRESH-WATER ; SEASONAL-VARIATION ; MARINE ECOSYSTEMS ; NUTRIENT ; PHOSPHORUS ; DENITRIFICATION ; PHYTOPLANKTON ; EXCHANGE ; FLUXES
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8108
Collection期刊论文
Corresponding AuthorXie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
Recommended Citation
GB/T 7714
Zhang, M.,Xu, J.,Xie, P.,et al. Nitrogen dynamics in large shallow eutrophic Lake Chaohu, China[J]. ENVIRONMENTAL GEOLOGY,2008,55(1):1-8.
APA Zhang, M.,Xu, J.,Xie, P.,&Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.(2008).Nitrogen dynamics in large shallow eutrophic Lake Chaohu, China.ENVIRONMENTAL GEOLOGY,55(1),1-8.
MLA Zhang, M.,et al."Nitrogen dynamics in large shallow eutrophic Lake Chaohu, China".ENVIRONMENTAL GEOLOGY 55.1(2008):1-8.
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