Ecological Water Requirement in Upper and Middle Reaches of the Yellow River Based on Flow Components and Hydraulic Index

Shibao Lu, Wenting Cai, Wei Shao, Farhad Taghizadeh-Hesary, Muhammad Faisal, Hongbo Zhang and Yangang Xue
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Shibao Lu: School of Public Administration, Zhejiang University of Finance and Economics, Hangzhou 310018, China
Wenting Cai: China Urban Construction Design & Research Institute Co., Ltd., Beijing 100120, China
Wei Shao: School of Economics, Zhejiang University of Finance and Economics, Hangzhou 310018, China
Farhad Taghizadeh-Hesary: Social Science Research Institute, Tokai University, Hiratsuka-shi 259-1292, Kanagawa-ken, Japan
Muhammad Faisal: College of Economics and Management, Huazhong Agricultural University, Wuhan 430070, China
Hongbo Zhang: School of Environmental Science and Engineering, Chang’an University, Xi’an 710054, China
Yangang Xue: School of Electrical Engineering, Lanzhou Institute of Technology, Lanzhou 730050, China

IJERPH, 2021, vol. 18, issue 20, 1-16

Abstract: Deterioration of the ecological environment in the upper and middle reaches of the Yellow River in China substantially impacts the growth and development of aquatic organisms in the drainage basin. This paper builds a conceptual model by applying flow components and fish ecological requirements relation with a relevant object of main fish in the upper and middle reaches of the Yellow River. The paper utilized the flow restoration method by employing the River2D model (two-dimensional model of river hydrodynamics and fish habitat), and a one-dimensional hydrodynamics HEC-RAS (hydrologic engineering center’s-river analysis system). The calculation result showed that the runoff condition required for Silurus lanzhouensis survival is that the monthly lowest flow in a year is 150 m 3 ·s ?1 , and the lowest flow for suitable flow from April to October is 150 m 3 ·s ?1 , and 300 m 3 ·s ?1 from November to March. The research result is closer to the actual condition and has more outstanding operability. Meanwhile, the results proposed the coupling method of ecological water requirement for the mainstream of the Yellow River. Moreover, the results portrayed the ecological flow process according to the upper envelope of minimum and maximum ecological water requirements of each fracture surface. It is regarded that the ecological flow process is deemed as the initial value of the reservoir regulation model.

Keywords: Yellow River; ecological environment; fish survival; lowest flow; suitable flow (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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