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首页> 外文期刊>Journal of Sustainable Development >Using Sediment Deposited in Small Reservoirs to Quantify Sediment Yield in Two Small Catchments of Iran
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Using Sediment Deposited in Small Reservoirs to Quantify Sediment Yield in Two Small Catchments of Iran

机译：利用沉积在小型水库中的泥沙来量化伊朗两个小流域的泥沙产量

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Sediment deposition in reservoirs is a serious off-site consequence of soil erosion in Semnan Province, Iran. So far insufficient and less reliable sediment yield data have been collected for these regions. The large number of available sediment deposition rates in reservoirs makes the use of reservoir sediments very attractive for regional-scale studies of sediment delivery. This paper however discusses a methodology combination of both source fingerprinting technique and reservoir sediment survey to provide reliable data on sediment yields of geological formation for two small catchments, Iran. The study first assessed the volume and mass of deposited sediment in reservoirs. Secondary a fingerprinting technique have been used to identify the contribution and then specific sediment yield of each geological formation to reservoir sediment. Results indicate that there is some variation in specific sediment yield (SSY) among geological formations in two catchments: i.e. 10.31 t ha-1 year-1 to 0.41 t ha -1 year -1 and emphasize the importance of Quaternary units and Upper Red formations as the dominant surface source within two catchments. This is the important finding to support design and implementation of sediment control strategies in these catchments.
机译：在伊朗塞姆南省，水库中的泥沙沉积是土壤侵蚀的严重异地后果。到目前为止，这些地区的沉积物产量数据不足且可靠性较差。水库中大量可用的沉积物沉积速率使水库沉积物的使用对于区域规模的沉积物输送研究非常有吸引力。然而，本文讨论了源指纹识别技术和储层沉积物调查相结合的方法论，以提供有关伊朗两个小流域地质构造沉积物产量的可靠数据。该研究首先评估了水库中沉积沉积物的体积和质量。次要的指纹技术已被用于识别每个地质构造对储层沉积物的贡献，然后确定特定的沉积物产量。结果表明，在两个流域的地质地层中，特定沉积物产量（SSY）存在一定的差异：即10.31 t ha-1年-1至0.41 t ha -1年-1，并强调了第四纪单元和上部红色地层的重要性作为两个集水区的主要地表水源。这是支持在这些流域设计和实施沉积物控制策略的重要发现。

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