Estimating Sediment Loadings in the South Saskatchewan River Catchment
Estimating Sediment Loadings in the South Saskatchewan River Catchment
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DOI：
10.1007/s11269-017-1838-8
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发表时间：
2017
影响因子：
4.3
通讯作者：
L. Morales-Marín;Howard Wheater;K. Lindenschmidt
中科院分区：
文献类型：
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作者：
L. Morales-Marín;Howard Wheater;K. Lindenschmidt
在河流集水区，沉积物通量促进营养物和污染物的运输，降低水质，可能影响水体健康，改变生态系统功能。沉积物迁移过程也改变集水区的形态，沉积物沉积可减少河流的流量和水库和湖泊的蓄水能力。在本文中，悬浮泥沙的产量和浓度在南萨斯喀彻温河流域位于加拿大西部的估计。结果源于SPARROW模型，该模型表明沉积物的主要来源是农田和城市化土地。对主要集水水库的拦沙分析表明，正如预期的那样，水库蓄水量与水库蓄水量减少呈负相关，与留存率呈正相关。此外，水库寿命范围从不到100年到超过9000年。这里提出的结果将是有用的，以补充当地的环境准则，使更好地管理沉积物的侵蚀和沉积在南萨斯喀彻温河流域。
In river catchments, sediment fluxes facilitate the transport of nutrients and pollutants and reduce water quality, potentially impacting water body health and altering ecosystem functioning. Sediment transport processes also modify the morphology of catchments, and sediment deposition can reduce flow capacity in rivers and water storage capacity in reservoirs and lakes. In this paper, estimates of suspended sediment yields and concentrations in the South Saskatchewan River catchment located in western Canada are presented. The results stem from a SPARROW model, which indicates that the dominant sources of sediment are represented by agricultural fields and urbanized lands. Analyses of sediment retention in the major catchment reservoirs indicate that, as expected, reservoir storage capacity is negatively correlated with reservoir storage reduction and positively correlated with retention rate. Additionally, reservoir lifespans range from less than 100 years to over 9000 years. The results presented here will be useful to complement local environmental guidelines to allow better management of sediment erosion and deposition in the South Saskatchewan River catchment.