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犁耕作用对~(137)Cs法测算农耕地土壤侵蚀量的影响
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犁耕作用对~(137)Cs法测算农耕地土壤侵蚀量的影响
犁耕作用对~(137)Cs法测算农耕地土壤侵蚀量的影响
Author:
信张
信宝 张
信宝 张
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1 November 1993
journal article
Published by
Science China Press., Co. Ltd.
in
Chinese Science Bulletin
Vol. 38
(22)
,
2072-2076
DOI:
10.1360/csb1993-38-22-2072
Abstract
原子弹爆炸产生的放射性尘埃~(137)Cs 降到地表后,被地表土壤的胶体颗粒牢固的吸附,~(137)Cs以后的运动主要取决土壤颗粒的物理运动.1954—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,核尘埃的产出量极微.~(137)Cs 的半衰期为30.1a,是研究土壤侵蚀、泥沙运移的一种较好的人工同位素.
Keywords
土壤侵蚀量
~(137)S
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