Research on the structure composition of ecosystem and the ecological water level of lake1

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• 作者：Guo lidanXia ziqiangYu lanlan
• 会议时间：2009-11-01
• 关键词：Lake ecosystem ; Structure composition ; Ecological water level ; Poyang Lake ; Optimal range of water level approach
• 作者单位：Guo lidan,Xia ziqiang(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing,P.R.China,210098;College of Hydrology and Water Resources,Hohai University,Nanjing,P.R.China,210098)Yu lanlan(State Key Laboratory of Hydrology-Water Resources and Hydraulic)
• 母体文献：第十三届世界湖泊大会论文集
• 会议名称：第十三届世界湖泊大会
• 会议地点：武汉
• 主办单位：中国环境科学学会
• 语种：chi

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 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.