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Formation of Modern Times Involutions of Hilly Country Soil and their Historical Evolution in Altiplano of Qingzang
Author(s): 
Pages: 69-72
Year: Issue:  S1
Journal: Acta Agriculturae Boreali-Sinica

Keyword:  黑钙土 冰卷泥 CaCO3沉积 演变;
Abstract: 文章研究了青藏高原东缘山地土壤黑钙土冰卷泥的形成过程、形态变化及发育特征。结果表明:(1)晚全新世以来,黑钙土冰卷泥层位逐渐下移,且存在加速之势,这与全球气候变化密切相关。(2)黑钙土发生分化,存在向栗钙土演化趋势,CaCO3层由粉末沉积转变为粒状沉积,且层位提升,CaCO3二次沉积普遍,溶质表聚现象加剧,与冰卷泥层位下移可互为佐证。
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