【摘 要】
：
Represent the lake biodiversity with hydrographical data.According to this idea,definition and classification of lake ecological water level were given,and statistical method of the measured water lev
【机 构】
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State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing
论文部分内容阅读
Represent the lake biodiversity with hydrographical data.According to this idea,definition and classification of lake ecological water level were given,and statistical method of the measured water level data and optimal range of water level approach were proposed.As the case study,water level data from 1952 to 1977 of the Duchang station in Poyang Lake area was selected to analyze characteristics both intra-annual and inter-annual variation of the lake level,besides,all characteristic ecological water levels at the typical site were calculated employing the methods proposed.The results show that it is significant to maintain both intra-annual and inter-annual natural fluctuation characteristics of the lake level,as well as the proper ecological water level process,for ecological protection and ecological security of Poyang Lake.
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