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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 The results correlate well with records from tree rings and historical documents in neighboring regions.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:None

著录项

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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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