Seasonal and diurnal dynamics of physicochemical parameters and gas production in vertical water column of a eutrophic pond
文献类型：期刊论文
| 作者 | Gao, Yan; Zhang, Zhenhua; Liu, Xinhong; Yi, Neng; Zhang, Li; Song, Wei; Wang, Yan; Mazumder, Asit; Yan, Shaohua |
| 刊名 | ECOLOGICAL ENGINEERING
 |
| 出版日期 | 2016 |
| 英文摘要 | Small and shallow water bodies often exhibit high rates of biogeochemical activities, yet have not received much attention. Here we test the hypothesis that there is strong diurnal stratification of physicochemical characteristics in a hyper-eutrophic pond, which would lead to a heterogeneous distributionof gas production via biological processes along vertical profile of water column. Accordingly, we focused on quantifying the seasonal and diurnaldynamics of nutrients (NO3-, NH4+, total dissolved nitrogen TDN, PO43-, total dissolved phosphorus TDP), physicochemical environment factors (DO, pH, light intensity, Chlorophyll-a) and gas emission (N-2, N2O, O-2, CH4) in the vertical profile of an ultra-eutrophic pond located at the subtropical climate zone, China. The strong and persistent stratification of several parameters at the resolution of centimeters along vertical profile of water was observed in summer and autumn. Interestingly, the surface water and sediment-water interface produced much more gas than the middle layers of watercolumn. The quantity and composition of gas collected from the surface water were greatly affected by O-2 production, which followed the diurnal cycleof sunlight intensity. Other biological processes, e.g. nitrification and/or denitrification, may also have contributed to the heterogeneous gas productionas high N-2 and N2O fluxes were detected in the surface layer and sediment-water interface. CH4 production was mainly from the sediment-waterinterface, especially in summer when the bottom layer developed very low DO concentrations due to strong stratification. Our results demonstrate that besides the unexpectedly long and strong thermal and physicochemical stratification, the shallow eutrophic pond can undergo significant verticalheterogeneity of gas emission due to the strong diurnal stratification of these physicochemical parameters. |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S0925857415303153 |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/10780]  |
| 专题 | 深圳先进技术研究院_医药所 |
| 作者单位 | ECOLOGICAL ENGINEERING |
| 推荐引用方式 GB/T 7714 | Gao, Yan,Zhang, Zhenhua,Liu, Xinhong,et al. Seasonal and diurnal dynamics of physicochemical parameters and gas production in vertical water column of a eutrophic pond[J]. ECOLOGICAL ENGINEERING,2016. |
| APA | Gao, Yan.,Zhang, Zhenhua.,Liu, Xinhong.,Yi, Neng.,Zhang, Li.,...&Yan, Shaohua.(2016).Seasonal and diurnal dynamics of physicochemical parameters and gas production in vertical water column of a eutrophic pond.ECOLOGICAL ENGINEERING. |
| MLA | Gao, Yan,et al."Seasonal and diurnal dynamics of physicochemical parameters and gas production in vertical water column of a eutrophic pond".ECOLOGICAL ENGINEERING (2016). |
入库方式： OAI收割
来源：深圳先进技术研究院
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