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首页> 外文会议>Erosion and sediment yields in the changing environment >Quantification of the sediment budget of a river basin, based on reconstruction of the post-fallout redistribution of Chernobyl particle-bound ~(137)Cs
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Quantification of the sediment budget of a river basin, based on reconstruction of the post-fallout redistribution of Chernobyl particle-bound ~(137)Cs

机译：基于重建切尔诺贝利粒子束缚〜（137）Cs的沉降后重新分布，对流域的泥沙收支进行量化

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摘要

Quantitative assessment of the sediment budget of a fluvial system is a key approach to understanding its geomorphic behaviour and an essential tool for investigating the redistribution of particle-bound contaminants along the sediment cascade. Here, we present a study involving the application of several independent approaches for quantifying the post-fallout (1986-2009) redistribution of Chernobyl particle-bound ~(137)Cs and the basin-scale sediment budget for the River Plava basin situated in the northern part of the Srednerusskaya Upland (Central European Russia). The techniques employed include ~(137)Cs-based sediment tracing, two soil erosion models and the analysis of soil profile morphology. The results show that most of the sediment originating from human-accelerated soil erosion on cultivated slopes is redeposited on the uncultivated lower parts of the slopes or in the bottoms of infilled gullies, hollows and 1 3rd order valleys. The River Plava valley itself represents a system dominated by efficient transport, with very limited floodplain sediment storage. The ~(137)Cs-contaminated sediment export from the River Plava basin outlet exerts a significant impact on the River Upa. Its floodplain sediment contamination by ~(137)Cs downstream of the River Plava mouth increases by almost an order of magnitude.
机译：河流系统沉积物预算的定量评估是了解其地貌行为的关键方法，并且是研究颗粒污染物沿沉积物级联的重新分布的重要工具。在这里，我们提出了一项研究，涉及应用几种独立的方法来量化切尔诺贝利颗粒束缚〜（137）Cs的沉降后（1986-2009年）再分布以及位于该地区的Plava河盆地的盆地规模沉积物收支。 Srednerusskaya高地的北部（俄罗斯中欧）。所采用的技术包括基于〜（137）Cs的泥沙追踪，两个土壤侵蚀模型以及土壤剖面形态分析。结果表明，人为耕作坡度加速的土壤侵蚀所产生的大部分沉积物都重新沉积在未耕作的坡面下部或填满的沟壑，凹陷和1个三阶山谷的底部。普拉瓦河谷本身代表了一个以高效运输为主导的系统，洪泛区沉积物的储量非常有限。从Plava河流域出口流出的〜（137）Cs污染的沉积物对Upa河产生了重大影响。 Plava河口下游〜（137）Cs对洪泛区沉积物的污染几乎增加了一个数量级。

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  • 来源
  • 会议地点 Chengdu(CN)
  • 作者

    VLADIMIR BELYAEV; EUGENIA SHAMSHURINA; MAXIM MARKELOV; VALENTIN GOLOSOV; NADEZDA IVANOVA; VALERIY BONDAREV; TATIANA PARAMONOVA; OLIVIER EVRARD; CATHERINE OTTLE; IRENE LEFEVRE; PHILIPPE BONTE;

  • 作者单位

    Laboratory of Soil Erosion and Fluvial Processes, Lomonosov Moscow State University, GSP-1, 119991, Leninskie Gory, 1, Moscow, Russia;

    Laboratory of Soil Erosion and Fluvial Processes, Lomonosov Moscow State University, GSP-1, 119991, Leninskie Gory, 1, Moscow, Russia;

    Laboratory of Soil Erosion and Fluvial Processes, Lomonosov Moscow State University, GSP-1, 119991, Leninskie Gory, 1, Moscow, Russia;

    Laboratory of Soil Erosion and Fluvial Processes, Lomonosov Moscow State University, GSP-1, 119991, Leninskie Gory, 1, Moscow, Russia,Institute of Ecology and Geography, Kazan Federal University, Kremlevskaya st, 18, Kazan, Russia;

    Laboratory of Soil Erosion and Fluvial Processes, Lomonosov Moscow State University, GSP-1, 119991, Leninskie Gory, 1, Moscow, Russia;

    Laboratory of Soil Erosion and Fluvial Processes, Lomonosov Moscow State University, GSP-1, 119991, Leninskie Gory, 1, Moscow, Russia;

    Department of Radioecology and Ecotoxicology, Faculty of Soil Science, Lomonosov Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russia;

    Laboratoire des Sciences du Climat et de I 'Environnement (LSCE/IPSL), Unite Mixte de Recherche 8212 (CEA/CNRS/UVSQ), Centre de Recherche du CNRS, Avenue de la Terrasse, 91 198 Gif-sur-Yvetle Cedex, France;

    Laboratoire des Sciences du Climat et de I 'Environnement (LSCE/IPSL), Unite Mixte de Recherche 8212 (CEA/CNRS/UVSQ), Centre de Recherche du CNRS, Avenue de la Terrasse, 91 198 Gif-sur-Yvetle Cedex, France;

    Laboratoire des Sciences du Climat et de I 'Environnement (LSCE/IPSL), Unite Mixte de Recherche 8212 (CEA/CNRS/UVSQ), Centre de Recherche du CNRS, Avenue de la Terrasse, 91 198 Gif-sur-Yvetle Cedex, France;

    Laboratoire des Sciences du Climat et de I 'Environnement (LSCE/IPSL), Unite Mixte de Recherche 8212 (CEA/CNRS/UVSQ), Centre de Recherche du CNRS, Avenue de la Terrasse, 91 198 Gif-sur-Yvetle Cedex, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fluvial system; sediment budget; sediment sources and sinks; ~(137)Cs; human-accelerated soil erosion; central european russia;

    机译：河流系统泥沙预算；沉积物源和汇； 〜（137）碳;人为加速的土壤侵蚀；中欧俄罗斯;

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