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

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Liu, Yang^1 ; Cao, Sheng-Le^1

School of Civil Engineering, Shandong University, Jinan

250061, China^1

关键词: Current situation;    Ecological environments;    Environmental flow;    Hydraulic parameters;    Hydrological parameters;    Hydrological regime;    Technical support;    Xiaoqing rivers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012007/pdf
DOI  :  10.1088/1755-1315/69/1/012007

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

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.