| 红壤与红壤性水稻土中磁性矿物特性的比较研究 |
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| 引用本文： | 卢升高.红壤与红壤性水稻土中磁性矿物特性的比较研究[J].科技通报,1999,15(6):409-413. |
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| 作者姓名： | 卢升高 |
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| 作者单位： | 浙江大学土化系!浙江杭州310029 |
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| 摘 要： | 用环境磁学方法研究了第四纪红土母质上发育的红壤和红性水稻土中磁性矿物的数量、粒度和类型。结果表明，红壤和红壤性水稻土的磁化率、频率磁化率、软剩磁、硬剩磁、非滞后剩磁和饱和等温剩磁等磁性参数有显著差异，磁化率的粒级分布表明，红壤性水稻土各粒级的磁性均受到破坏，以粘能降低最多，认为其磁性演变的主要机制是红 水稻土中超顺磁性和稳定单畴磁性颗的破坏。红壤性水稻土中基本不存在超顺磁性和稳定单畴态铁磁性矿物。
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| 关 键 词： | 红壤 水稻土 磁性矿物 磁性参数 土壤磁性 |
A Comparative Study on Magnetic Minerals of Red Soil and Paddy Soil |
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| LU Sheng,gao.A Comparative Study on Magnetic Minerals of Red Soil and Paddy Soil[J].Bulletin of Science and Technology,1999,15(6):409-413. |
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| Authors: | LU Sheng gao |
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| Abstract: | A comparative study on concentration, grain size and type of ferrimagnetic minerals in red soil and paddy soil derived from Quaternary red earth was made by applying environmental magnetism method. Results indicated that there were obvious differences in environmental magnetic parameters between red soil and paddy soil. Magnetic susceptibility of soil particle fraction showed that magnetic susceptibility values of all soil fractions were declined by waterlogging. It was concluded that the mechanism responsible for decline in magnetic properties was destruction of superparamagnetic grain and stable single domain grain during waterlogging. These changes mainly occurred within depth of less than 60 cm of soils. |
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| Keywords: | red soil paddy soil magnetic parameters magnetic mineral |
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