Identifying hydrological regime and eco-flow threshold of small and medium flood of the Xiaoqing River in Jinan city

It was known that hydrological regime was the main influencing factor of river ecosystem, but the regime of different flow rates of urban rivers was poorly understood. We collected daily inflows at the Huangtai station of the Xiaoqing River from 1960 to 2014 and divided the data into three periods....

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2017-06, Vol.69 (1), p.12007
Main Authors: Liu, Yang, Cao, Sheng-Le
Format: Article
Language:English
Subjects:
Aquatic ecosystems
Ecology
Ecosystems
Flow rates
Flow velocity
Hydrologic regime
Hydrology
Mathematical analysis
Parameters
River ecology
Rivers
Technical services
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Summary:It was known that hydrological regime was the main influencing factor of river ecosystem, but the regime of different flow rates of urban rivers was poorly understood. We collected daily inflows at the Huangtai station of the Xiaoqing River from 1960 to 2014 and divided the data into three periods. Then we calculated hydrological parameters by the method of EFCs (Environmental Flow Components) and analyzed the tendency and change rates of each component respectively in the three periods. Combined with the ecological significance of environmental flow components, we identified the small and medium flood had the greatest impact on the river regime and ecosystem. And then we used the hydraulic parameters in the good ecosystem period as control conditions, to calculate the ecological threshold of the flow component under the current situation. This study could provide technical support for restoring and improving hydrological regime and ecological environment of the Xiaoqing River in Jinan city.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/69/1/012007