WOOD PJ, ARMITAGE PD
School of GeographyThe University of BirminghamEdgbaston, Birmingham B15 2TT, UK
Environ Manage. 1997 Mar;21(2):203-17. doi: 10.1007/s002679900019.
/ Although sedimentation is a naturally occurring phenomenon inrivers, land-use changes have resulted in an increase in anthropogenicallyinduced fine sediment deposition. Poorly managed agricultural practices,mineral extraction, and construction can result in an increase in suspendedsolids and sedimentation in rivers and streams, leading to a decline inhabitat quality. The nature and origins of fine sediments in the loticenvironment are reviewed in relation to channel and nonchannel sources andthe impact of human activity. Fine sediment transport and deposition areoutlined in relation to variations in streamflow and particle sizecharacteristics. A holistic approach to the problems associated with finesediment is outlined to aid in the identification of sediment sources,transport, and deposition processes in the river catchment. The multiplecauses and deleterious impacts associated with fine sediments on riverinehabitats, primary producers, macroinvertebrates, and fisheries are identifiedand reviewed to provide river managers with a guide to source material. Therestoration of rivers with fine sediment problems are discussed in relationto a holistic management framework to aid in the planning and undertaking ofmitigation measures within both the river channel and surrounding catchmentarea.KEY WORDS: Sedimentation; Fine sediment; Holistic approach; Ecologicalimpact; River restoration
/ 尽管泥沙淤积是河流中自然发生的现象，但土地利用变化导致人为诱发的细颗粒泥沙淤积增加。农业生产管理不善、矿产开采和建设会导致河流和溪流中悬浮固体和泥沙淤积增加，从而导致栖息地质量下降。本文结合河道和非河道来源以及人类活动的影响，对流水环境中细颗粒泥沙的性质和来源进行了综述。细颗粒泥沙的输运和淤积与水流变化和颗粒大小特征有关。本文概述了一种解决细颗粒泥沙相关问题的整体方法，以帮助识别河流集水区中的泥沙来源、输运和淤积过程。确定并综述了细颗粒泥沙对河流栖息地、初级生产者、大型无脊椎动物和渔业的多种成因及有害影响，为河流管理者提供了一份源材料指南。本文结合整体管理框架讨论了存在细颗粒泥沙问题的河流的修复，以帮助在河道和周边集水区内规划和实施缓解措施。
泥沙淤积；细颗粒泥沙；整体方法；生态影响；河流修复
