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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Climate change and soil erosion in a small alpine lake basin on the Loess Plateau, China
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Climate change and soil erosion in a small alpine lake basin on the Loess Plateau, China

机译:中国黄土高原小山湖盆地气候变化与土壤侵蚀

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摘要

Multi-proxy indices retrieved from sediments in Lake Chaonaqiu, an alpine lake on the western Loess Plateau (LP) of China, were used to reconstruct a precipitation history over the last similar to 300 years. The results correlate well with records from tree rings and historical documents in neighboring regions. We show that the lake oscillated between two states, i.e. wetter climatic conditions, which favored denser vegetation cover, and promoted weaker catchment soil erosion; and drier climatic conditions, which lead to less vegetation coverage, correlate with stronger surface soil erosion. Several intensive soil erosion events were identified in the sediment cores, and most of these occurred during decadal/multi-decadal dry periods, and correlate well with flood events documented in historical literature. The results of this study show that soil erosion by flood events is particularly intense during dry periods, and further highlights the role of vegetation cover in the conservation of water and soil in small lake basins on the Chinese LP. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译:从中国西部黄土高原(LP)的阿尔卑斯湖湖中沉积物中检索的多代理索引被用来重建持续的降雨历史,类似于300年。结果与邻近地区的树圈和历史文献的记录相相关。我们展示了两个州之间振荡的湖泊,即潮湿的气候条件,最有利于密集植被覆盖,并促进了较弱的流域土壤侵蚀;和干燥的气候条件,导致植被覆盖率较少,与表面土壤侵蚀更强。在沉积物核心中鉴定了几种密集的土壤侵蚀事件,大部分时间发生在二数/多分型干燥期间,并与历史文献中记载的洪水事件相关。本研究的结果表明,在干燥时期,洪水事件的土壤侵蚀特别强烈,并进一步突出了植被覆盖在中国LP的小湖盆地水土中的作用。版权所有(c)2016 John Wiley&Sons,Ltd。

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  • 作者单位

    Chinese Acad Sci Inst Earth Environm State Key Lab Loess &

    Quaternary Geol Yanxiang Rd 97 Xian 710061 Shaanxi Provinc Peoples R China;

    Chinese Acad Sci Inst Earth Environm State Key Lab Loess &

    Quaternary Geol Yanxiang Rd 97 Xian 710061 Shaanxi Provinc Peoples R China;

    Chinese Acad Sci Inst Earth Environm State Key Lab Loess &

    Quaternary Geol Yanxiang Rd 97 Xian 710061 Shaanxi Provinc Peoples R China;

    Chinese Acad Sci Inst Earth Environm State Key Lab Loess &

    Quaternary Geol Yanxiang Rd 97 Xian 710061 Shaanxi Provinc Peoples R China;

    Chinese Acad Sci Inst Earth Environm State Key Lab Loess &

    Quaternary Geol Yanxiang Rd 97 Xian 710061 Shaanxi Provinc Peoples R China;

    Chinese Acad Sci Inst Earth Environm State Key Lab Loess &

    Quaternary Geol Yanxiang Rd 97 Xian 710061 Shaanxi Provinc Peoples R China;

    Chinese Acad Sci Inst Earth Environm State Key Lab Loess &

    Quaternary Geol Yanxiang Rd 97 Xian 710061 Shaanxi Provinc Peoples R China;

    Univ Kentucky Dept Earth &

    Environm Sci Lexington KY 40506 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地球物理学;
  • 关键词

    Lake Chaonaqiu; climatic change; vegetation cover; soil erosion; loess plateau;

    机译:Chaonaqiu湖;气候变化;植被覆盖;土壤侵蚀;黄土高原;

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