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-  2018 

长江监利河段环境流量估算方法初探 Preliminary study of estimation of environmental flow in Yangtze River Jianli reach

Keywords: 环境流量,变异性范围法(RVA),水文学法

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Abstract:

简要分析了河流环境流量的内涵,结合长江监利河段水文情势和生态环境资料,比较分析了推求环境流量的4类方法在该河段的适用性,结果表明水文学方法更具有适用性、可操作性.着重介绍了水文学法下的变异性范围法(RVA),并用滑动秩和检验法对监利站1975-2014年的月流量序列进行变异分析,分析表明没有显著变异点,数据可用于RVA的计算中,最终利用该法计算得到监利河段5、6、7月的环境流量分别为7 648、12 864、16 953m3/s,占比多年各月月均流量70%、83%、72%,并与其他5种水文学方法的计算结果进行对比,认为计算结果合理,可以为监利河段环境流量取值提供参考

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