长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

卢升高; 俞劲炎; 章明奎; 俞立中; 张卫国

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长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

卢升高, 俞劲炎, 章明奎, 俞立中, 张卫国

文章导航 > 沉积学报 > 2000 > 18(3): 336-340

卢升高, 俞劲炎, 章明奎, 俞立中, 张卫国. 长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制[J]. 沉积学报, 2000, 18(3): 336-340.

引用本文:

卢升高, 俞劲炎, 章明奎, 俞立中, 张卫国. 长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制[J]. 沉积学报, 2000, 18(3): 336-340.

LU Sheng gao, YU Jin yan, ZHANG Ming kui, YU Li zhong, ZHANG Wei guo. Environmental Magnetism of Magnetic Enhancement forSoils Formed on Quaternary Sediments in Yangtze River Valley[J]. Acta Sedimentologica Sinica, 2000, 18(3): 336-340.

Citation:

卢升高, 俞劲炎, 章明奎, 俞立中, 张卫国. 长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制[J]. 沉积学报, 2000, 18(3): 336-340.

引用本文:

卢升高, 俞劲炎, 章明奎, 俞立中, 张卫国. 长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制[J]. 沉积学报, 2000, 18(3): 336-340.

Citation:

长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

1 浙江大学环境与资源学院华家池校区杭州 310029;
2 华东师范大学河口海岸国家重点实验室上海 200062

基金项目: 国家自然科学基金项目(批准号:49971044)资助

详细信息

作者简介:
卢升高,男,1962年出生,副教授,博士,环境磁学

中图分类号: P534.63,X123

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文章访问数: 645
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Environmental Magnetism of Magnetic Enhancement forSoils Formed on Quaternary Sediments in Yangtze River Valley

1 Zhejiang University,Hangzhou 310029;
2 East China Normal University,Shanghai 200062

摘要

摘要: 对长江中下游第四纪沉积物 (Q₃ 黄土,Q₂ 红土和Q₃ 红土 )发育土壤的磁性增强现象及其物理机制进行了讨论。结果表明 :(1)铁磁性矿物是土壤磁性的主要载体,它们是成土过程中形成的稳定单畴 (SSD)和超顺磁性 (SP)态的次生磁性矿物,没有显示重要的反铁磁性矿物的贡献;(2 )土壤磁化率 (χ)的高低与成土过程产生的稳定单畴和超顺磁性颗粒呈极显著正相关,指示了风化成土作用的强度,磁化率可作为反映成土环境变化的代用指标;(3)频率磁化率 (χfd) 5 %可作为土壤中的超顺磁性颗粒存在与否的临界值,土壤 χfd值的高低同样反映了风化成土作用的强度,可用作研究第四纪环境变化的有用工具之一。
- 长江中下游 /
- 第四纪沉积物 /
- 环境磁学 /
- 磁性矿物
Abstract: On the basis of environmental magnetism study on soils formed on Quaternary sediments in Yangtze River valley,the soil magnetic enhancement and its mechanism were discussed.Results showed that soils formed on Quaternary sediments exhibited a distinct ferrimagnetic profile with the magnetic susceptibility enhancement of soil horizons with respect to that of parent materials. It is suggested that formation of pedogenic ferrimagnetic minerals resulted in enhancement of magnetic susceptibility in soils.In addition,the pedogenic ferrimagnetic minerals are mostly superparamagnetic(SP) and stable single domain(SSD)grains.It is found that highly significant relationships between the magnetic susceptibility( χ ) values of the samples and frequency dependent susceptibility ( χ fd ) and between χ values of samples and anhysteretic susceptibility( χ ARM ).It is suggested that χ can be considered an indicator for the environmental fluctuation recorded in soils. Results also suggested that χ fd value of 5% can be regarded as an indicator to reflect the formation of pedogenic SP and SSD ferrimagnetic minerals in the continuous pedogenic development of soils.Thus,magnetic susceptibility can be used to study the Quaternary environmental changes.
- Yangtze River valley /
- Quaternary sediments /
- environmental magnetism /
- magnetic minerals

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参考文献(22)

[1]	朱日祥,李春景,吴汉宁等.中国黄土磁学性质与古气候意义[J] .中国科学(B),1994,24：992～997
[2]	刘东生主编.黄土、第四纪地质、全球变化(第二集)[C] .北京：科学出版社,199l
[3]	刘秀铭,刘东生,Heller F.中国黄土磁颗粒分析及其古气候意义[J] .中国科学(B),1991,21：639～644
[4]	龚子同主编.土壤环境变化[M] .北京：中国科学技术出版社,1992
[5]	Oldfield F. Environmental magnetism - personal perspective[J] . Quat.Sci. Rev., 1991,10:73～83
[6]	Thompson R, Oldfield F. Environmental magnetism[ M ] . London: Go-erge Allen & Uniwin. 1986
[7]	Verosub K L, Roberts A P. Environmetal magnetism:past, present andfuture [J] .J Geophys. Res., 1995,100:2 175～2 192
[8]	Evens M E, Heller F. Magnetic enhanccrnent and palaeoclimate: study ofa loess/palaeosol couplet across the loess Plateau of China[J] . Geophys.J. Int. 1994,117:257～264
[9]	Heller F, Liu T. Palaeoclimate and sedimentary history from magneticsusceptibility of loess in China[ J ] . Geophys. Res. Letters, 1986, 13:1169～1 172
[10]	胡守云,王苏民,Appel E.呼伦湖湖泊沉积物磁化率变化的环境磁学机制[J] .中国科学(D),1998,28(4)：334～339
[11]	Jelinwski A,Tucholka P,Gasse f. et al. Mineral magnetic record of en-vironment in Late Pleistocene and Holocene sediments, Lake Manas.Xinjiang. China[J] . Geophy. Res. Lett., 1995,22:953～956
[12]	杨浩,夏应菲,赵其国等.红土系列剖面的磁化率特征与古气候冷暖变换[J] .土壤学报,1995,32(增刊)：195～200
[13]	Eyre J K,Shao J. Magnetic enhancement of Chinese loess- the role γ-Fe2O3 [J] . Geophys. J. Int., 1994,117: 265～274
[14]	FineP, Singer M J, Vemsub K L. et al. New evidence for the origin offerrimagnetic minerals in Loess from China[J] . Soil Soc. Am J., 1993,57:1 537～1 542
[15]	Maher B A, Thompson R. Mineral magnetic record of the Chinese loessand palaosol[J] . Geology, 1991,19:3～6
[16]	Zhou L P, Oldfield F, Wintle A G. et al. Partly pedogenic origin ofmagnetic variations in Chinese loess[J] . Nature, 1990,346:737～739
[17]	卢升高,俞劲炎.土壤磁学及其应用研究进展[J] .土壤学进展,1991,19(5)：1～8
[18]	俞劲炎,卢升高编著.土壤磁学[M] ,南昌：江西科技出版社,1991
[19]	章明奎.运用自然属性指标和数理分析方法进行土壤分类的研究－长江中下游中晚更新世沉积体发育土壤的土壤特性及其分类问题[D] .1991
[20]	Banerjee S K, King J, Marvin J. A rapid method for magnetic granu-lometry with application to environmental studies[J ] . Gcophys. Res.Letters, 1981,8:333～336
[21]	Maher B A, Tayor R. G. Formation of ultrafine grained magnetite insoils [J ] . Nature, 1989,30: 279～281
[22]	吕厚远,韩家懋,吴巧琴等.中国现代土壤磁化率分析及其古气候意义[J] .中国科学(B),1994,21：1 290～1 297

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长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

1 浙江大学环境与资源学院华家池校区杭州 310029;

2 华东师范大学河口海岸国家重点实验室上海 200062

基金项目: 国家自然科学基金项目(批准号:49971044)资助

作者简介:
卢升高,男,1962年出生,副教授,博士,环境磁学

收稿日期: 1999-01-19
刊出日期: 2000-09-10

中图分类号: P534.63,X123

关键词:

摘要: 对长江中下游第四纪沉积物 (Q₃ 黄土,Q₂ 红土和Q₃ 红土 )发育土壤的磁性增强现象及其物理机制进行了讨论。结果表明 :(1)铁磁性矿物是土壤磁性的主要载体,它们是成土过程中形成的稳定单畴 (SSD)和超顺磁性 (SP)态的次生磁性矿物,没有显示重要的反铁磁性矿物的贡献;(2 )土壤磁化率 (χ)的高低与成土过程产生的稳定单畴和超顺磁性颗粒呈极显著正相关,指示了风化成土作用的强度,磁化率可作为反映成土环境变化的代用指标;(3)频率磁化率 (χfd) 5 %可作为土壤中的超顺磁性颗粒存在与否的临界值,土壤 χfd值的高低同样反映了风化成土作用的强度,可用作研究第四纪环境变化的有用工具之一。

English Abstract

Environmental Magnetism of Magnetic Enhancement forSoils Formed on Quaternary Sediments in Yangtze River Valley

1 Zhejiang University,Hangzhou 310029;

2 East China Normal University,Shanghai 200062

Received Date: 1999-01-19
Publish Date: 2000-09-10

Keywords:

Abstract: On the basis of environmental magnetism study on soils formed on Quaternary sediments in Yangtze River valley,the soil magnetic enhancement and its mechanism were discussed.Results showed that soils formed on Quaternary sediments exhibited a distinct ferrimagnetic profile with the magnetic susceptibility enhancement of soil horizons with respect to that of parent materials. It is suggested that formation of pedogenic ferrimagnetic minerals resulted in enhancement of magnetic susceptibility in soils.In addition,the pedogenic ferrimagnetic minerals are mostly superparamagnetic(SP) and stable single domain(SSD)grains.It is found that highly significant relationships between the magnetic susceptibility( χ ) values of the samples and frequency dependent susceptibility ( χ fd ) and between χ values of samples and anhysteretic susceptibility( χ ARM ).It is suggested that χ can be considered an indicator for the environmental fluctuation recorded in soils. Results also suggested that χ fd value of 5% can be regarded as an indicator to reflect the formation of pedogenic SP and SSD ferrimagnetic minerals in the continuous pedogenic development of soils.Thus,magnetic susceptibility can be used to study the Quaternary environmental changes.

卢升高, 俞劲炎, 章明奎, 俞立中, 张卫国. 长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制[J]. 沉积学报, 2000, 18(3): 336-340.

引用本文:

卢升高, 俞劲炎, 章明奎, 俞立中, 张卫国. 长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制[J]. 沉积学报, 2000, 18(3): 336-340.

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长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

作者简介:
卢升高,男,1962年出生,副教授,博士,环境磁学

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Environmental Magnetism of Magnetic Enhancement forSoils Formed on Quaternary Sediments in Yangtze River Valley

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长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

1 浙江大学环境与资源学院华家池校区杭州 310029;

2 华东师范大学河口海岸国家重点实验室上海 200062

作者简介:
卢升高,男,1962年出生,副教授,博士,环境磁学

English Abstract

Environmental Magnetism of Magnetic Enhancement forSoils Formed on Quaternary Sediments in Yangtze River Valley

1 Zhejiang University,Hangzhou 310029;

2 East China Normal University,Shanghai 200062

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[2]	李忠. “从最高到最深”—从第17届国际沉积学大会看沉积学研究前沿 . 沉积学报, 2006, 24(06): 928-933.

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长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

作者简介: 卢升高,男,1962年出生,副教授,博士,环境磁学

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Environmental Magnetism of Magnetic Enhancement forSoils Formed on Quaternary Sediments in Yangtze River Valley

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长江中下游第四纪沉积物发育土壤磁性增强的环境磁学机制

1 浙江大学环境与资源学院 华家池校区杭州 310029; 2 华东师范大学河口海岸国家重点实验室 上海 200062

作者简介: 卢升高,男,1962年出生,副教授,博士,环境磁学

English Abstract

Environmental Magnetism of Magnetic Enhancement forSoils Formed on Quaternary Sediments in Yangtze River Valley

1 Zhejiang University,Hangzhou 310029; 2 East China Normal University,Shanghai 200062

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友情链接

期刊在线

联系我们

作者简介:
卢升高,男,1962年出生,副教授,博士,环境磁学

1 浙江大学环境与资源学院华家池校区杭州 310029;

2 华东师范大学河口海岸国家重点实验室上海 200062

作者简介:
卢升高,男,1962年出生,副教授,博士,环境磁学

1 Zhejiang University,Hangzhou 310029;

2 East China Normal University,Shanghai 200062