Determination of Water Stress Indices As a Function of Ecological Flows
Determination of Water Stress Indices As a Function of Ecological Flows
复制标题
确定作为生态流量函数的水胁迫指数
DOI：
10.1061/9780784412312.342
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
K. A. Watson
中科院分区：
文献类型：
--
作者：
A. Mayer;D. Watkins;A. Mirchi;R. Gyawali;K. A. Watson
水压力指数提供了与可再生供应有关的高取水率造成的流量枯竭的量度。在这项工作中，我们基于当地或区域提取、消耗利用系数和河流流量计算了密歇根州卡拉马祖河流域子流域的水压力指数。我们论证了不确定性对消费使用系数的影响。我们通过计算年平均指数和取水量最高、流量最低的月份来评估时间尺度的影响。我们将计算的应力指数与特定地点、基于生态的临界流量消耗进行比较。在HUC-12流域中，计算出的流量消耗超过了临界消耗。
Water stress indices provide a measure of streamflow depletion caused by high rates of withdrawal in relation to renewable supply. In this work, we calculate water stress indices for sub-watersheds in the Kalamazoo River watershed, Michigan, based on local or regionally derived withdrawals, consumptive use coefficients, and stream discharges. We demonstrate the impacts of uncertainty in consumptive use coefficients. We assess the impacts of temporal scale by calculating indices on an average annual basis and during months when withdrawals are highest and flows are lowest. We compare calculated stress indices to location-specific, ecologically-based, critical flow depletions. Calculated flow depletions were found to exceed the critical depletions in a significant number of the HUC-12 watersheds.