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首页> 外文期刊>The Science of the Total Environment >Effect of water-sediment regulation of the Xiaolangdi reservoir on the concentrations, characteristics, and fluxes of suspended sediment and organic carbon in the Yellow River
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Effect of water-sediment regulation of the Xiaolangdi reservoir on the concentrations, characteristics, and fluxes of suspended sediment and organic carbon in the Yellow River

机译：小浪底水库水沙调节对黄河悬浮泥沙和有机碳浓度，特征及通量的影响

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摘要

Water-sediment regulation (WSR) of the Xiaolangdi Reservoir in the Yellow River is different from other water conservancy projects, with sediment resuspending along the river downstream of the reservoir during water regulation while some suspended sediment depositing during sediment regulation. In this study, samples were collected before, during, and after WSR to investigate the effect of WSR on the suspended sediment and organic carbon downstream of the reservoir. The suspended sediment concentration ([SPS]) increased with the river flow velocity (Ⅴ) as a power function ([SPS] = 1.348 V~(2.519)) during the three periods. The suspended sediment grain size decreased along the river during water and sediment regulations and after WSR; they were generally below 200 urn with the fine particles (＜50 μm) of 68.0%-93.75% and positively correlated with the flow velocity. The black carbon content in suspended sediment elevated along the river during both water and sediment regulations, and it increased with 2-50 μm fraction during water regulation and with ＜2 μm fraction during sediment regulation, suggesting that black carbon mainly exists in fine particles and is influenced by both suspended sediment source and characteristics. There was no significant difference in dissolved organic carbon (DOC) concentration during water regulation, sediment regulation, and after WSR, inferring that the effect of sediment resuspension/deposition on DOC concentration was insignificant. The contribution of DOC flux (27.3%) during WSR period to the annual flux was comparable to that (22.6%) of water, but lower than the sediment (32.5%) and paniculate organic carbon (POC) (49.5%). This study suggests that WSR will exert significant influence on the concentrations, characteristics and fluxes of POC (p ＜ 0.05) and sediment (p ＜ 0.05) but have no significant influence on DOC (p ＞ 0.1) of the Yellow River.
机译：黄河小浪底水库的水沙调节（WSR）与其他水利工程不同，在水调节期间，沉积物沿水库下游河流重悬，而在沉积物调节期间有一些悬浮的沉积物沉积。在这项研究中，在WSR之前，期间和之后收集了样品，以研究WSR对储层下游悬浮沉积物和有机碳的影响。在这三个时期，悬浮泥沙浓度（[SPS]）随河流流速（Ⅴ）的幂函数（[SPS] = 1.348 V〜（2.519））的增加而增加。在水和泥沙调节期间以及WSR之后，沿河的悬浮泥沙粒径减小；它们通常小于200微米，细颗粒（<50μm）为68.0％-93.75％，并且与流速呈正相关。在水和泥沙调节过程中，沿河悬浮泥沙中的黑碳含量均升高，在水调节期间以2-50μm的比例增加，在泥沙调节期间以＜2μm的比例增加，这表明黑碳主要存在于细颗粒和细颗粒中。受悬浮泥沙源和特征的影响。在水调节，沉积物调节以及WSR之后，溶解有机碳（DOC）浓度没有显着差异，这表明沉积物重悬/沉积对DOC浓度的影响不明显。在WSR期间，DOC通量（27.3％）对年通量的贡献与水的贡献（22.6％）相当，但低于沉积物（32.5％）和颗粒有机碳（POC）（49.5％）。这项研究表明，WSR将对POC的浓度，特征和通量（p ＜0.05）和沉积物（p ＜0.05）产生显着影响，而对黄河的DOC（p＞ 0.1）没有显着影响。

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  • 来源
    《The Science of the Total Environment》 |2016年第15期|487-497|共11页
  • 作者

    Xinghui Xia; Jianwei Dong; Minghu Wang; Hui Xie; Na Xia; Husheng Li; Xiaotian Zhang; Xinli Mou; Jiaojiao Wen; Yimeng Bao;

  • 作者单位

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China,School of Environment, Beijing Normal University, Beijing 100875, China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China;

    Aishan Hydrological Station, Hydrology and Water Resources Survey Bureau of the Shandong Province, Yellow River Conservancy Commission, Shandong 252216, China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China,School of Chemical and Environmental Engineering Chongqing Three Gorges University, Wanzhou, Chongqing 404100, China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China;

    State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875,China;

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  • 正文语种 eng
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  • 关键词

    Suspended sediment; Organic carbon; Water-sediment regulation; Sediment resuspension-deposition; Yellow River; Water conservancy project;

    机译：悬浮沉淀物;有机碳水沉降调节;沉积物重沉积黄河;水利工程;

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