Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water period
A water quality monitoring buoy installed in the center of the eutrophic shallow lake Ulansuhai was used to explore the dissolved oxygen (DO) balance. A revised DO model for shallow eutrophic lakes was applied to identify trends in the lake's DO content during the non-frozen period and determin...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2022-06-01
|
| Series: | Water Supply |
| Subjects: | |
| Online Access: | http://ws.iwaponline.com/content/22/6/6013 |
| _version_ | 1828427907429564416 |
|---|---|
| author | Fan Zhang Xiaohong Shi Shengnan Zhao Lauri Arvola Jussi Huotari Ruonan Hao |
| author_facet | Fan Zhang Xiaohong Shi Shengnan Zhao Lauri Arvola Jussi Huotari Ruonan Hao |
| author_sort | Fan Zhang |
| collection | DOAJ |
| description | A water quality monitoring buoy installed in the center of the eutrophic shallow lake Ulansuhai was used to explore the dissolved oxygen (DO) balance. A revised DO model for shallow eutrophic lakes was applied to identify trends in the lake's DO content during the non-frozen period and determine the equilibrium relationship of DO in the water body. The coefficient of determination and the Nash efficiency of the model proved the feasibility of the model. The main drivers affecting the DO balance of the lake were photosynthesis, aeration and the lateral movements of oxygen-rich water, which accounted for 49.28, 14.72 and 36%, respectively, whereas respiration and sediment oxygen consumption, on the other hand, accounted for 1.56 and 98.44%, respectively. These findings suggest that photosynthesis and sediment oxygen consumption dominate the DO balance in eutrophic shallow lakes. A trend analysis of the average oxygen production and consumption rates indicated a maximum of 0.22 mg/L·h for photosynthesis and 0.20 mg/L·h for sediment oxygen consumption. A correlation analysis showed that water temperature was involved in changing the DO level of the lake mainly by affecting the oxygen consumption process. HIGHLIGHTS
Continuous DO data were obtained by an on-line monitoring instrument with high frequency, and the data were simulated.;
A model of DO in a shallow water eutrophication lake is improved and successfully applied to typical lakes in the study area.;
The main driving factors of DO were found out and their variation range was determined.; |
| first_indexed | 2024-12-10T17:09:55Z |
| format | Article |
| id | doaj.art-9f862fc5b5674aef9d836865e6004ebc |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-12-10T17:09:55Z |
| publishDate | 2022-06-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-9f862fc5b5674aef9d836865e6004ebc2022-12-22T01:40:21ZengIWA PublishingWater Supply1606-97491607-07982022-06-012266013603110.2166/ws.2022.217217Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water periodFan Zhang0Xiaohong Shi1Shengnan Zhao2Lauri Arvola3Jussi Huotari4Ruonan Hao5 College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China Lammi Biological Station, Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, Helsinki University, Lammi FI-16900, Finland Lammi Biological Station, Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, Helsinki University, Lammi FI-16900, Finland College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China A water quality monitoring buoy installed in the center of the eutrophic shallow lake Ulansuhai was used to explore the dissolved oxygen (DO) balance. A revised DO model for shallow eutrophic lakes was applied to identify trends in the lake's DO content during the non-frozen period and determine the equilibrium relationship of DO in the water body. The coefficient of determination and the Nash efficiency of the model proved the feasibility of the model. The main drivers affecting the DO balance of the lake were photosynthesis, aeration and the lateral movements of oxygen-rich water, which accounted for 49.28, 14.72 and 36%, respectively, whereas respiration and sediment oxygen consumption, on the other hand, accounted for 1.56 and 98.44%, respectively. These findings suggest that photosynthesis and sediment oxygen consumption dominate the DO balance in eutrophic shallow lakes. A trend analysis of the average oxygen production and consumption rates indicated a maximum of 0.22 mg/L·h for photosynthesis and 0.20 mg/L·h for sediment oxygen consumption. A correlation analysis showed that water temperature was involved in changing the DO level of the lake mainly by affecting the oxygen consumption process. HIGHLIGHTS Continuous DO data were obtained by an on-line monitoring instrument with high frequency, and the data were simulated.; A model of DO in a shallow water eutrophication lake is improved and successfully applied to typical lakes in the study area.; The main driving factors of DO were found out and their variation range was determined.;http://ws.iwaponline.com/content/22/6/6013dissolved oxygen equilibriummodel simulationonline monitoringopen-water periodshallow eutrophic lakes |
| spellingShingle | Fan Zhang Xiaohong Shi Shengnan Zhao Lauri Arvola Jussi Huotari Ruonan Hao Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water period Water Supply dissolved oxygen equilibrium model simulation online monitoring open-water period shallow eutrophic lakes |
| title | Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water period |
| title_full | Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water period |
| title_fullStr | Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water period |
| title_full_unstemmed | Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water period |
| title_short | Equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic Inner Mongolian lake (UL) during open-water period |
| title_sort | equilibrium simulation and driving factors of dissolved oxygen in a shallow eutrophic inner mongolian lake ul during open water period |
| topic | dissolved oxygen equilibrium model simulation online monitoring open-water period shallow eutrophic lakes |
| url | http://ws.iwaponline.com/content/22/6/6013 |
| work_keys_str_mv | AT fanzhang equilibriumsimulationanddrivingfactorsofdissolvedoxygeninashalloweutrophicinnermongolianlakeulduringopenwaterperiod AT xiaohongshi equilibriumsimulationanddrivingfactorsofdissolvedoxygeninashalloweutrophicinnermongolianlakeulduringopenwaterperiod AT shengnanzhao equilibriumsimulationanddrivingfactorsofdissolvedoxygeninashalloweutrophicinnermongolianlakeulduringopenwaterperiod AT lauriarvola equilibriumsimulationanddrivingfactorsofdissolvedoxygeninashalloweutrophicinnermongolianlakeulduringopenwaterperiod AT jussihuotari equilibriumsimulationanddrivingfactorsofdissolvedoxygeninashalloweutrophicinnermongolianlakeulduringopenwaterperiod AT ruonanhao equilibriumsimulationanddrivingfactorsofdissolvedoxygeninashalloweutrophicinnermongolianlakeulduringopenwaterperiod |