南亚热带地带性森林土壤元素含量及风化特征 |
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| 出 版 社：中国环境科学出版社 |
| 发表时间：2002 |
| 台 站：
鼎湖山森林生态系统定位研究站
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| 作 者：欧阳学军，周国逸，黄忠良，张德强，张倩媚 |
| 点 击 率：5729 |
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| 关 键 字：鼎湖山；土壤；元素含量；风化特征 |
| 摘 要：分析了鼎湖山南亚热带常绿阔叶林土壤元素含量及在剖面的分布规律。结果发现：(1)该土壤具有K含量较高而Zn、Mn、P及Ca、Mg含量较低的特点；(2) Ca、Zn在土壤中表现富集，Al、Sc、Cu表现为淋失，Fe在土壤表层淋失而在底层富集，P、Si在表层富集而在底层淋失；其他元素迁移不明显。(3)土壤的化学风化指数 （CIA=[Al2O3/(Al2O3+CaO+Na2O+K2O)]×100）、K2O/Na2O、K2O/CaO、Al2O3/Na2O、Fe2O3/SiO2、硅铝比、退碱系数（CaO+Na2O+K2O/Al2O3）和硅铝铁率分别为83、39.8、31.5、207.4、0.2、3.3、0.2和2.2，在剖面间差异不大，显示该土壤风化过程处于中后期阶段。 |
| 关 键 字(英文)：Dinghushan；Soil；Element content；Weathering feature |
| 摘 要(英文)：Element concentrations and their distribution in soil profile of monsoon evergreen broad-leaved forest in Dinghushan were studied. It indicated that：(1)Compared with other climatic soil types in China， the soil in Dinghushan showed a higher content of element K and lower of Zn，Mn，P，Ca and Mg. (2) In the soil profile，the element transfer had such a tendency that Ca and Zn accumulating，while Al，Sc and Cu leaching，together with a leaching from the soil surface to the lower layers for the element Fe and an accumulation of P and Si at the surface layer， leaching in the lower layers as well. While the other elements changed little with the soil profile. (3) The mean indexes of CIA (=[Al2O3/(Al2O3+CaO+Na2O+K2O)]×100)， K2O/Na2O，K2O/CaO， Al2O3/Na2O，Fe2O3/SiO2，SiO2/Al2O3， (CaO+Na2O+K2O)/Al2O3 and SiO2/ (Al2O3+Fe2O3) were 83，39.8，31.5，207.4，0.2，3.3，0.2，2.2，respectively，which suggested that the soil weathering was in the late metaphase. |
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 南亚热带地带性森林土壤元素含量及风化特征.pdf |
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