水库的水生态效应研究成果发表

low flows, and also the ecological instream flow. The results indicate that the general extreme

value distribution model performs well in describing the probabilistic behaviour of high/low flows

in the basin. Specifically, the Gumbel and Frank copula functions perform better than other

functions. Reservoir inflow encounter series are subject to high synchronous concurrence, at

greater than 27% for low flow vs low flow. Thus, the water supply system of the basin is not

steady. The ecological instream flow can be analysed by a monthly frequency computation

method, with 90% guarantee rate. The low-flow periods are January, February and May, and

water transfers are not feasible in these periods. Thus, external sources of water are urgently

needed to guarantee sufficient water supply to provide critical water resources and to protect

important aquatic environments.

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Ecohydrological effects of water reservoirs with consideration of asynchronous a.pdf