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[1]WEI Dong-lan,LI Yong-hua.Deposit Characteristic and Developed Law of Debris Flow During the Late Pleistocene in Xiaojiang Valley[J].Research of Soil and Water Conservation,2008,15(05):18-21.

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Deposit Characteristic and Developed Law of Debris Flow During the Late Pleistocene in Xiaojiang Valley

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 05 Page number: 18-21 Column: Public date: 2008-10-20

Title:: Deposit Characteristic and Developed Law of Debris Flow During the Late Pleistocene in Xiaojiang Valley

Author(s):: WEI Dong-lan, LI Yong-hua; College of Urban and Environment Science, Liaoning Normal University, Dalian, Liaoning 116029, China

Keywords:: the Late Pleistocene; Xiaojiang valley; deposit characteristic of debris flow

CLC:: P534.631;P642.23

DOI:: -

Abstract:: As a special deposit type, debris flow deposit forms in specifically geological structure and geographical environment. Because of specifically geographical environment, debris flow deposit becomes the main deposit type in Xiaojiang Valley. On basis of studying deposit characteristic, the law of distribution, assignation, transference and enrichment of chemical element and soluble salt, the content of calcium carbonate, acidity and basicity, the content of organic matter and combination character of plant’s spore and pollen in deposit section of debris flow during different times of the Late Pleistocene near Jingjia Valley in Xiaojiang Valley in the east border of Tibetan Plateau, and according deposit characteristic of debris flow. This paper finds that since the last interglacial stage to the last glacial period, the soluble salt increased, and the mainly pollen has changed into herbal from woody. At the same time the debris flow deposits are the trend of thinning. This reflects that a cooling tendency of climate caused a decrease in debris flow.

References:: [1] 中国科学院《中国自然地理》编辑委员会.中国自然地理·地貌[M].北京:科学出版社,1980:301-312.
[2] 田连全,康志成,张有富,等.泥石流及其综合治理[M].北京:科学出版社,1993:1-332.
[3] 李永化,张小咏,崔之久,等.第四纪泥石流活动期与气候期的阶段性耦合过程[J].第四纪研究,2002(4):340-348.
[4] 吴积善,康志成,田连全,等.云南蒋家沟泥石流观测研究[M].北京:科学出版社,1990:1-251.
[5] 李吉均,况明生.小江流域第四纪沉积物的ESR年代、山原红壤发育年龄与地层划分的研究[C]//“八五”攀登计划青藏高原项目.1995年学术年会论文集.兰州:兰州大学出版社,1995:64-78.
[6] 黄春长.环境变迁[M].北京:科学出版社,1998:85-116.

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