[1]GUAN Xinjian,ZHANG Yiming,MENG Yu,et al.Runoff Series Mutation Test and Environmental Flow Composition Analysis —A Case Study of the Wangjiaba of Main Stream of the Huai River[J].Research of Soil and Water Conservation,2020,27(01):353-359.
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Runoff Series Mutation Test and Environmental Flow Composition Analysis —A Case Study of the Wangjiaba of Main Stream of the Huai River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
353-359
Column:
Public date:
2020-02-20
- Title:
- Runoff Series Mutation Test and Environmental Flow Composition Analysis —A Case Study of the Wangjiaba of Main Stream of the Huai River
- Keywords:
- environmental flow; mutation test; IHA; RVA; Wangjiaba
- CLC:
- P333
- DOI:
- -
- Abstract:
- As an important factor in maintaining the healthy operation of river ecosystems, environmental flow plays an increasingly important role in water management and optimal allocation. In order to analyze the variation of the runoff series of the Wangjiaba in the Huaihe River, and analyze the composition of the environmental flow, and provide reference for the optimal allocation of water resources, Wangjiaba station of the Huai River Basin main stream was taken as an example, the Mann-Kendall method and the Pettitt method were used to detect the mutation of the flow sequence. The hydrological analysis technique(IHA)and range of variability approach(RVA)were used to analyze the environmental flow composition and hydrological ecological characteristics. The results showed that the runoff sequence of Wangjiaba station was mutated in 1984; the annual average of the flow rate after the mutation had increased, and the low flow rate and high pulse environment flow components accounted for a large proportion. The hydrological indicators were all low or moderate changes. In summary, the ecological characteristics of Wangjiaba after the mutation are developing towards a good direction, but it is still necessary to combine ecological scheduling and rational water resources optimization in order to further improve and maintain the health of the river ecosystem.
- References:
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Last Update:
2020-02-25