The Eco-Hydrological Demand Research on Coreiusheterodon Reproduction in the Upper Yangtze River Reserve

The upper Yangtze river rare and endemic national nature reserve was set up to protect the rare and endemic fish. Affected by the cascade development of the downstream reach of the jinsha river, fish habitat in the national nature reserve have been changed significantly, which will affect the reproduction and growth of the fishes.The Coreius heterodon spawning grounds were located in the Main stream of the natural reserve, andits spawning season needs certain overflowing process to lay eggs. This article used the water level and flow data from 1956 to 2012 in the Zhu Tuo stationto analysis the eco-hydrologicaldemand for Coreiusheterodon breeding. and this result can provide the reference for the ecological operation of cascade reservoirs in the downstreamof jinsha river.

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Length-weight relationships of three indigenous fish species from National Nature Reserve for Rare and Endemic Fishes of the upper Yangtze River, China

Journal of Applied Ichthyology ◽

10.1111/jai.13640 ◽

2018 ◽

Vol 34 (4) ◽

pp. 1014-1016 ◽

Cited By ~ 1

Author(s):

J. Wang ◽

X. M. Jiang ◽

B. Z. Pan ◽

Y. Lu

Keyword(s):

Fish Species ◽

Yangtze River ◽

Nature Reserve ◽

National Nature Reserve ◽

Upper Yangtze River ◽

The Upper Yangtze River ◽

Indigenous Fish Species

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Non-Uniform Sediment Input of the Middle Yangtze River, China

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.641-642.70 ◽

2014 ◽

Vol 641-642 ◽

pp. 70-74

Author(s):

Hua Ge ◽

Ling Ling Zhu ◽

Ren Yong Huang

Keyword(s):

Human Activities ◽

Yangtze River ◽

Three Gorges Reservoir ◽

Normal Operation ◽

Main Stream ◽

Three Gorges ◽

Upper Yangtze River ◽

Sediment Input ◽

Lower Yangtze ◽

The Upper Yangtze River

The non-uniform sediment input has played a significant role in the bed evolution in the middle and lower Yangtze River, which indirectly influences the amount of the sediment transported into the East China Sea every year. However, it has been dramatically changed by the climate change, especially the human activities in the upper Yangtze River, not only the amount, but also the grading. The average annual sediment load has reached to 402.6 million tons since 1960s, while showing a decreasing and refining trend mostly influenced by the human activities, such as soil and water conservation, and large hydropower projects. The most direct consequence of these changes was to cause severe erosion in the middle and lower Yangtze River, further to bring about fluvial regime adjustment. In this article, a series of daily and annual averaged sediment transport data since 1960’ were collected and analyzed to find the impacts of the significant human activities on the non-sediment input of the middle Yangtze River, and then its variation tendency was predicted, affected by the existed large hydropower projects and to be build ones in the upper Yangtze river. The result shows that the non-uniform sediment input of the middle Yangtze River was slightly reduced by the operation of Gezhouba Project and the up and middle Yangtze River water and soil conservation prevention and control projects, and further less after the impoundment of Three Gorges Reservoir, meanwhile its grading has been getting finer and finer. In future, along with the normal operation of the Three Gorges Reservoir and the built of the cascade reservoirs in the upper main stream and tributaries of the Yangtze River, it will be continuously reduced and refined.

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Genetic analysis of wild Ancherythroculter nigrocauda in tributaries and the main stream of the upper Yangtze River basin of China

Mitochondrial DNA Part A ◽

10.1080/24701394.2019.1698558 ◽

2019 ◽

Vol 31 (1) ◽

pp. 17-24

Author(s):

Taiming Yan ◽

Xiongyan Wang ◽

Song Li ◽

Zhide He ◽

Jie Luo ◽

...

Keyword(s):

Genetic Analysis ◽

River Basin ◽

Yangtze River ◽

Yangtze River Basin ◽

Main Stream ◽

Upper Yangtze River ◽

The Upper Yangtze River

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Changes in Flood Regime of the Upper Yangtze River

Frontiers in Earth Science ◽

10.3389/feart.2021.650882 ◽

2021 ◽

Vol 9 ◽

Author(s):

Yu Zhang ◽

Guohua Fang ◽

Zhengyang Tang ◽

Xin Wen ◽

Hairong Zhang ◽

...

Keyword(s):

Yangtze River ◽

Anthropogenic Activities ◽

Flood Management ◽

Jinsha River ◽

Positive Role ◽

Flood Peak ◽

Flood Regime ◽

Upper Yangtze River ◽

Recession Limb ◽

The Upper Yangtze River

River flooding affects more people worldwide than other natural hazards. Thus, analysis of the changes in flood regime caused by global warming and increasing anthropogenic activities will help us make adaptive plans for future flood management. The nonstationary flood behavior in the upper Yangtze River was examined comprehensively in terms of trend, change point, and periodicity with co-usage of different methods. Results show that there are decreasing tendencies in the corresponding series of annual maximum flood peak flow and flood volume in four out of six control stations, except Pingshan and Wulong stations in the Jinsha River and the Wu River, respectively, and the flood peak occurrence time appears earlier mostly. The uniformity of flood process increases in four main tributaries, while it decreases in mainstream of the Yangtze River (Yichang and Pingshan stations). The rates of both rising limb and recession limb of all the typical flood process flowing through the six stations were analyzed. 77.8% of the rates of rising limb decrease, while 61.1% of the rates of recession limb increase, which is almost consistent with the variation reflected by the uniformity. The change points of most evaluation indicators happened in 1970s–1990s. The first main periodicity of evaluation indicators in Yichang is about 45 years, while that of other stations is about 20 years. Invalidity of stationarity in the flood series can be attributed to the intensified construction on major water conservancy projects, changes of underlying surface, and influences of climatic variables. The contributions of both climatic control and the Three Gorges Dam (TGD) to the variation of the annual flood peak in Yichang station were further quantitatively evaluated, which has verified that the construction of the TGD has played a positive role in peak-flood clipping.

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