| 阿尔泰山西北山区寒冻湿润条件下土壤的风化特征 |
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| 引用本文： | 季方,赵虎.阿尔泰山西北山区寒冻湿润条件下土壤的风化特征[J].冰川冻土,1999,21(2):164-168. |
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| 作者姓名： | 季方 赵虎 |
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| 作者单位： | 中国科学院新疆生态与地理研究所!乌鲁木齐，830011，中国科学院新疆生态与地理研究所!乌鲁木齐，830011 |
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| 摘 要： | 通过阿尔泰山西北山区不同海拔的６个土壤剖面，从土壤的机械组成、底土层矿物、粘土矿物类型和粘粒的化学全量等，分析了其风化特征。研究结果表明，整个山区总体上风化较弱，在粘土矿物类型和粘粒的硅铝铁率比值方面无明显差异。粘土矿物都以水云母为主，粘粒的硅铝铁率为２．７８￣３．３７。风化程度的一定差异只表现在山区不同的高度带其土壤表层粘粒含量、Ｘ射线衍射峰的高度以及底土层矿物组成等方面。在高山带寒冻湿润的条件
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| 关 键 词： | 土壤风化 粘土矿物 阿尔泰山 寒冻湿润条件 |
The Weathering Features of Soil Under Cold and Wet Condition in the Northwestern Altay Mountains |
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| JI Fang ,ZHAO Hu.The Weathering Features of Soil Under Cold and Wet Condition in the Northwestern Altay Mountains[J].Journal of Glaciology and Geocryology,1999,21(2):164-168. |
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| Authors: | JI Fang ZHAO Hu |
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| Abstract: | In this paper 6 soil profiles in different elevation zones in the Altay Mountains are chosen and the mechanical composition of soil, the eroded degree of mineral in the ground layer, the clay mineral through X-ray diffraction pattern, and the silica sesquioxide ratio of the clay particles are analyzed.The results show that, as a whole, weathering of soil was weak and there was no obvious difference in the type of clay mineral and molecular ratio SiO2/ R2O3 of clay particles in different elevation zones. Clay mineral was dominated by hydromica and the silica sesquioxide ratio of the clay particles is 2.78 ~3.37. Only were the differentials of the weathering degree observed at several respects. The content of the clay particles in the surface layer in alpine area was higher than that in lower mountain area, whereas the peak height of X-ray differaction pattern of the main clay mineral was reverse. Because of cold and wet condition in the alpine areas, the eroded degree of the original minerals in the ground layer was stronger than that in the lower mountain areas. |
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| Keywords: | weathering of soil clay mineral Altay Mountains |
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