IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
蒋家沟流域土壤侵蚀及泥石流细粒物质来源的137Cs法初步研究
Alternative TitleA Preliminary Study on the Sources of Fine Materials of the Sediment and Debris Flow
张信宝1; 汪阳春1; 李少龙1; 张一云2; 赵庆昌2; 蒋锦江2; 白立新2; 严美琼2; 吴丽萍2
Corresponding Author张信宝
1992
Source Publication中国水土保持
ISSN1000-0941
Issue2Pages:32-35+66
Abstract原子弹爆炸产生的放射性同位素137Cs降落到地表后,被表层土壤的胶体颗粒牢固地吸附,很难被植物摄取或淋溶掉。137Cs以后的任何运动,均为结合土壤颗粒的物理运动。1956~1965年是核尘埃的主要产出期,其中以1963~1964年浓度最大,1970年以后产出的核尘埃的量极微。137Cs的半衰期为30年。137Cs法是研究土壤侵蚀、泥沙来源的一种新方法。国内外的研究表明,此方法具有快速、可靠、经济的特点。
本研究根据土壤的剖面的137Cs含量,对蒋家沟流域内不同类型的坡地的侵蚀程度进行了分析,根据源地土体和泥石流细粒物质(<1.0mm)的137Cs含量,分析了泥石流体中细粒物质的来源。

Other AbstractThis paper presents a methodology used for identification of the fine material sources of the sediment and de-bris flow and the findings on Jiangjiagou watershed, Yunnan Provice. The soil erosion of bare land and farmland looks like most severe. Soil erosion module of the farmland counts to 4100-5000 t/km2 ·y. The fine and coarse sediment are mainly oringinated from the bare slope land , so controlling sheet erosion, gully erosion and gravity erosion, like slidings and collapses, of the bare land is to be the key to control the debris flow on Jiangjiagou watershed. 
Keyword蒋家沟流域 细粒物质 泥石流 土壤侵蚀 核尘 铯-137 裸地 泥沙来源 物理系 山地灾害
DOI10.14123/j.cnki.swcc.1992.02.009
Indexed By北大中文核心
Language中文
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6438
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.中科院·水利部成都山地灾害所
2.四川大学物理系
Recommended Citation
GB/T 7714
张信宝,汪阳春,李少龙,等. 蒋家沟流域土壤侵蚀及泥石流细粒物质来源的137Cs法初步研究[J]. 中国水土保持,1992(2):32-35+66.
APA 张信宝.,汪阳春.,李少龙.,张一云.,赵庆昌.,...&吴丽萍.(1992).蒋家沟流域土壤侵蚀及泥石流细粒物质来源的137Cs法初步研究.中国水土保持(2),32-35+66.
MLA 张信宝,et al."蒋家沟流域土壤侵蚀及泥石流细粒物质来源的137Cs法初步研究".中国水土保持 .2(1992):32-35+66.
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