| 亚热带小流域不同沉积区土壤粘粒矿物的演变 |
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| 引用本文： | 章明奎. 亚热带小流域不同沉积区土壤粘粒矿物的演变[J]. 土壤通报, 2001, 32(3): 97-98 |
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| 作者姓名： | 章明奎 |
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| 作者单位： | 浙江大学环境与资源学院资源科学系, |
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| 基金项目： | 浙江省自然科学基金(497011)资助 |
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| 摘 要： | 在亚热带丘陵河谷地小流域范围内地表物质的迁移常可导致不同沉积区物质组成的变化 .从黄泥土→洪积泥砂土→培泥砂土 ,随着搬运距离的增加 ,其粘粒矿物组成发生了一系列的变化 ;高岭石逐渐下降 ,云母逐渐增加 ,蛭石渐趋下降消失 ,而绿泥石则逐渐形成 ;同时赤铁矿、针铁矿也先后下降消失 .矿物的演化与沉积物所处环境的水分条件及溶液中盐基物质和酸碱度变化有关
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| 关 键 词： | 小流域 沉积区 粘粒矿物演变 环境变化 |
| 文章编号： | 0564-3945(2001)03-0097-02 |
| 修稿时间： | 1999-12-12 |
Soil clay minerals in different depositional environments of a small river basin in subtropical area |
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| ZHANG Ming kui. Soil clay minerals in different depositional environments of a small river basin in subtropical area[J]. Chinese Journal of Soil Science, 2001, 32(3): 97-98 |
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| Authors: | ZHANG Ming kui |
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| Abstract: | The transportation of surface mineral materials in a small river basin of a substropical zone could result in changes in clay mineral composition of soils. From Yellowish red soil to Di luvial gritty clayey loam and Haplfluvioaguic loamy soil, with increase of transporting distance, soil clay mineral compositions were changed grieatly: kaolinite being gradually decreased, while vermiculite being first decresed and finally out of the soils completely. On the contrary, illite was gradually increased, and chlorite was formed increasingly. Meanwhile, iron oxides, including hematite and goethite, were also decreased and finally moved out with the increase of transporting distance. Changes in soil clay minerals were related with soil moisture, base composition and pH in different deposition environments. |
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| Keywords: | Surface minerals Transportation Evolution Environmental changes |
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