• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Hydrology research >Impact of groundwater abstraction on physical habitat of brown trout (Salmo trutta) in a small Danish stream
【24h】

Impact of groundwater abstraction on physical habitat of brown trout (Salmo trutta) in a small Danish stream

机译：丹麦小河中地下水抽取对褐鳟（Salmo trutta）物理栖息地的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this study was to assess the impact of groundwater abstraction on stream discharge and physical habitat conditions for brown trout (Salmo trutta) in a small Danish stream. Stream discharge was simulated using a lumped hydrological model (NAM) and a scenario was set up for stream discharge reference conditions. Stream physical habitat conditions (WUA) were simulated for four life stages of trout using a hydraulic habitat model (RHYHABSIM). The impact of groundwater abstraction on WUA for trout was assessed by combined simulations from the NAM model and the RHYHABSIM model.rnThe model predicted that groundwater abstraction reduced median annual discharge by 37% and mean annual 90th percentile discharge by 82%. Summer discharge was relatively most affected by groundwater abstraction and WUA was therefore particularly affected by groundwater abstraction during summer. WUA for adult trout was mainly controlled by suitable water depths (>40cm) even under conditions without abstraction. On an annual basis WUA for fry and juvenile trout was most affected by abstraction. Future modelling should consider improving simulation of low discharges and preferably not use general hydrological models.
机译：这项研究的目的是评估一条丹麦小溪流中地下水抽取对褐鳟（Salmo trutta）的溪流排放和自然栖息地条件的影响。使用集总水文模型（NAM）模拟了河流排放，并为河流排放参考条件建立了情景。使用水生生境模型（RHYHABSIM）对鳟鱼四个生命阶段的河流物理生境条件（WUA）进行了模拟。通过NAM模型和RHYHABSIM模型的组合模拟评估了地下水提取对鳟鱼用水户协会的影响。该模型预测，地下水提取可以使年均排放量减少37％，使年均90％排放量减少82％。夏季排放量受地下水抽取的影响最大，因此，用水户协会在夏季尤其受地下水抽取的影响。成年鳟鱼的用水户协会主要由适当的水深（> 40厘米）控制，即使在没有取水的条件下也是如此。每年，鱼苗和少年鳟鱼的用水户协会受提取影响最大。未来的建模应考虑改善低流量的模拟，最好不要使用一般的水文模型。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号