Baseflow Yield Coefficient: A Simple Hydrological Index for Water Yield and Hydrological Regulation
Baseflow Yield Coefficient: A Simple Hydrological Index for Water Yield and Hydrological Regulation
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基流产量系数：产水量和水文调节的简单水文指标
DOI：
10.1002/essoar.10511760.1
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Ochoa-Tocachi B
中科院分区：
文献类型：
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作者：
Ochoa-Tocachi B
生态系统服务概念的兴起使水循环的一些特征引起了更广泛的受众的注意，而这些受众不一定熟悉水文过程。当提到供水时，“水文调节”（或水流缓冲）一词经常被非水文学家使用，但他们常常迷失在驱动水文调节的复杂过程中，从而导致混乱和误解。一些需要保护或加强水文调节的水安全挑战最终优先考虑旨在增加水产量的行动，这种情况并不罕见。在这里，我提出了一个名为“基流产量系数”（BYC）的简单指数，其计算方法是给定时间段内基流（或旱季流量）与降水量之间的比率。尽管非常简单，但这可能是量化水产量和水文调节的强大工具，并提供可访问且透明的变量来解决上述问题。通过使用这个指数，我的目的是引导对话实现更有效的水安全投资，同时力图避免重新产生水产量和水文调节之间的误解，以便我们可以直接转向更相关的问题。
The rise of the ecosystem services concept has brought some characteristics of the water cycle to the attention of a broader audience who are not necessarily intrinsically familiar with hydrological processes. When referring to water supply, the term “hydrological regulation” (or streamflow buffering) is frequently used by non-hydrologists, yet they are often lost in the intricacies of the processes that drive it leading to confusion and misunderstandings. It is not uncommon that several water security challenges that require the conservation or enhancement of hydrological regulation end up prioritizing actions that aim at increasing water yield instead. Here, I present a simple index named “baseflow yield coefficient” (BYC), which is calculated as the ratio between baseflow (or dry season flow) and precipitation for a given period of time. Although quite simple, this might be a powerful tool to quantify both water yield and hydrological regulation and to provide an accessible and transparent variable that addresses the aforementioned issue. By using this index, I aim to guide the conversation to achieving more effective water security investments while, at the same time, seek to prevent having to revive the misunderstanding between water yield and hydrological regulation, so that we can move directly on to more relevant matters.