A SCENARIO OF AREA EXPANSION OF STABLE VEGETATION IN A GRAVEL-BED RIVER BASED ON THE UPPER TAMA RIVER CASE
A SCENARIO OF AREA EXPANSION OF STABLE VEGETATION IN A GRAVEL-BED RIVER BASED ON THE UPPER TAMA RIVER CASE
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基于多摩河上游案例的砾石河床稳定植被面积扩展情景
DOI：
10.2208/prohe.43.977
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Koichi Yamamoto
中科院分区：
文献类型：
--
作者：
Sam;K. Fujita;Koichi Yamamoto
植被影响不仅对航道治理具有重要意义，而且对自然栖息地也具有重要意义。显然，在砾石床上发现的溪流中植被的扩展取决于场地因素，如床材料、地下水位和地质。最重要的是，细小的沉积物起着重要作用。洪水期间，细粒泥沙的淤积受植被数量和类型、水流流量和时间的变化以及砾石河床流经的泥沙数量和类型的变化的影响。研究结果表明，河流植被与细粒泥沙淤积在水力学上具有显著的相关性，并提出了冲积河流植被扩张的情景。
Vegetation influence is not only important for the channel management, but also for natural habitats. Clearly, the expansion of in-stream vegetation found on the gravel bed depend on site factors, such as bed material, groundwater level and geology. Above other things, fine sediments play a important role. During floods, the deposit of fine sediments is affected by the numbers and types of vegetation, alterations of the volume and timing of flows, and changes in the amount and type of sediment through which the river with the gravel bed flows.The result of this research shows significant correlation in hydraulics between in-stream vegetation and the deposit of the fine sediment, and suggests the scenario of vegetation expansion in alluvial rivers.