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作 者 ：郭利丹*,夏自强,林虹,王勇

期 刊 ：生态学报 2009年 29卷 4期 页码：1787~1792

关键词：Tennant法；生态径流；年均值比；同期均值比；

Keywords:the Tennant method, ecological flow, percent of the average annual flow, percents of the average flow in the same periods,

摘 要 ：Tennant法在生态径流研究中起着重要作用。但是，对于保护河流生命健康与维持生物多样性来说，Tennant法存在着某些不合理之处；在具体应用中又有年均值比和同期均值比之别。鉴于Tennant法在我国应用较为广泛，文中对该方法的合理性及应用中的不同理解进行了探讨和评价。认为：Tennant法在生态径流评价中存在一定局限性；Tennant法的同期均值比相对年均值比合理。

Abstract:The Tennant method plays an important role in computing ecological flow. However, with river health protection and biodiversity maintenance being taken into account, the Tennant method exhibits some irrationalities. On the basis of two different understandings to the Tennant method, there are two approaches to setting ecological flow: one using the percent of the average annual flow and the other using the percents of the average flow in the same periods (the whole year being divided into several periods). Since the method is widely applied in China, the paper discusses and evaluates the applicability of the Tennant method and the two approaches for ecological flow computation preliminarily. The results show that there are some limitiations of the Tennant method in ecological flow evaluation,and the second approach is more reasonable than the first one.

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