...
首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Modelling the effect of vegetation on channel pattern in bedload rivers
【24h】

Modelling the effect of vegetation on channel pattern in bedload rivers

机译:模拟植被对河床河床格局的影响

获取原文
获取原文并翻译 | 示例
           

摘要

We modify a simple numerical steam-pattern model to examine the effect of sediment stabilization by roots on the channel pattern of bedload rivers. In the model, vegetation enhances bank resistance to erosion, causing the development of a single channel instead of a rapidly changing, multiple channel (braided) pattern. Net aggradation resulting from a high sediment supply, however, causes frequent avulsions that destroy vegetation locally, leading to the development of a multiple-channel pattern. A stability diagram representing multiple model runs predicts whether a river will exhibit single or multiple channels, based on plant-enhanced bank strength, and on the time scale of plant development relative to a time scale for change in unvegetated channels. A second stability diagram predicts the way in which the amplitude and period of a fluctuating imposed sediment load influence whether a single or multiple*channel pattern develops.
机译:我们修改了一个简单的数字蒸汽模式模型,以检查根源对河床底河道的沉积物稳定作用的影响。在该模型中,植被增强了河岸的抗侵蚀能力,导致形成单通道而不是快速变化的多通道(编织)模式。然而,由于大量泥沙供应而导致的净凝结导致频繁的撕脱,破坏了当地的植被,导致了多渠道格局的发展。代表多个模型运行的稳定性图基于植物增强的河岸强度以及相对于无植被河道变化的时间尺度的植物发育时间尺度,预测一条河将展示一条或多条河道。第二个稳定性图预测波动的沉积物负荷的幅度和周期影响单个或多个通道模式发展的方式。

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