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首页> 外文期刊>International journal of river basin management >Flexible vegetation behaviour and effects on flow conveyance: experimental observations
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Flexible vegetation behaviour and effects on flow conveyance: experimental observations

机译：灵活的植被行为及其对水流传输的影响：实验观察

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As it is known, vegetation is an important component of aquatic ecosystems. Because of the variety of species and, thus, of the characteristics of the vegetation elements (form, size, stiffness, etc.), it is difficult to develop a widely applicable method to predict mean flow and flow resistance. Despite the intense activity research, much work has to be done in understanding hydrodynamics in vegetated channels. This is important to analyse many physical processes involved in the ecosystem at different spatial and time scales. In this paper, attention is restricted to flexible vegetation. After a brief description of results obtained in previous experimental works conducted in a rectangular laboratory flume at the Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali - University of Palermo (Italy), the data are used to investigate how stems' concentration and flow submergence affect the mean flow and flow conveyance characteristics in vegetated channels. The results indicate that both these parameters affect the flow profile and flow conveyance characteristics, but flow submergence especially influences the dominant mechanism of momentum exchange between the vegetation layer and the layer above it.
机译：众所周知，植被是水生生态系统的重要组成部分。由于物种的多样性以及植被要素的特征（形状，大小，刚度等），很难开发一种可广泛应用的方法来预测平均水流和水流阻力。尽管进行了广泛的活动研究，但在了解植被通道中的水动力学方面仍需做大量工作。这对于在不同的空间和时间尺度上分析生态系统中涉及的许多物理过程非常重要。在本文中，注意力仅限于柔性植被。在简短描述了先前在矩形实验室水槽中进行的实验结果之后，该实验在意大利巴勒莫大学的Ambientale，Aerospaziale，dei Materiali的Dipartimento di Ingegneria Civile，Ambientale，Aerospaziale进行。淹没影响植被通道中的平均流量和流量输送特性。结果表明，这两个参数都会影响流量分布和流量传递特性，但流量淹没尤其会影响植被层与植被层之间动量交换的主要机制。

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