| 松嫩平原杜蒙沙地地表物质的地化组成及风化特征 |
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| 引用本文： | 谢远云,孟杰,郭令芬,何葵,康春国.松嫩平原杜蒙沙地地表物质的地化组成及风化特征[J].中国沙漠,2013,33(4):1009-1018. |
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| 作者姓名： | 谢远云 孟杰 郭令芬 何葵 康春国 |
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| 作者单位： | 1.哈尔滨师范大学 地理科学学院， 黑龙江 哈尔滨 150080；
2.哈尔滨学院 地理系， 黑龙江 哈尔滨 150086 |
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| 基金项目： | 国家自然科学基金项目，黑龙江省自然科学基金项目 |
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| 摘 要： | 本文分析了杜蒙沙地表土样品各粒级组分（全样、>63 μm、63~30μm、30~11 μm和<11 μm）的常量元素组成。结果表明：杜蒙沙地地表物质化学元素组成以Si、Al为主，与上地壳相比，除Si、Mn和Ti外，Fe、Mg、Ca和P严重亏损，Al和Na中度亏损，K轻微亏损；除Si、Al、Na、K外，Fe、Mg、Ca、Ti、P、Mn的变异系数均很高；常量元素在不同粒级中的变化程度按照Al
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| 关 键 词： | 粒级组分 地球化学组成 化学风化指标 风化特征 杜蒙沙地 |
| 收稿时间： | 2012-04-20 |
| 修稿时间： | 2012-05-21 |
Geochemical Composition and Weathering Feature of Surface Sediment in the Dumeng Sandy Land, Northeast China |
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| XIE Yuan-yun,MENG Jie,GUO Ling-fen,HE Kui,KANG Chun-guo.Geochemical Composition and Weathering Feature of Surface Sediment in the Dumeng Sandy Land, Northeast China[J].Journal of Desert Research,2013,33(4):1009-1018. |
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| Authors: | XIE Yuan-yun MENG Jie GUO Ling-fen HE Kui KANG Chun-guo |
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| Institution: | 1.College of Geographical Science, Harbin Normal University, Harbin 150080, China;
2.Department of Geographical Science, Harbin University, Harbin 150086, China |
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| Abstract: | The surface sediment samples from Dumeng sandy land were collected and divided into different grain size fractions (bulk sample, >63 μm, 63-30 μm, 30-11 μm and <11 μm ). These samples were analyzed in the laboratory to obtain composition of geochemical elements. The result shows that Si and Al take up a large part of chemical composition of surface sediment in Dumeng sandy land. Compared with the average composition of geochemical elements in the upper continental crust (UCC), Fe, Mg and Ca are depleted to a severe degree, Al and Na are depleted to a medium degree, and K are depleted slightly; Fe, Mg, Ca, P, Ti and Mn contents have high coefficients of variation; The variation degrees of major elements in different grain size fractions increase in the following order: Al
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| Keywords: | grain size fractions geochemical composition chemical weathering index weathering feature Dumeng sandy land |
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