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A comparison of measured ~(137)Cs and excess ~(210)Pb levels in the cultivated brown and cinnamon soils of the Yimeng Mountain area
ZHANG Yunqi; LONG Yi; YU Xingxiu; AN Juan
Corresponding AuthorZHANG Yunqi,
2014
Source PublicationChinese Journal of Geochemistry
ISSN1000-9426
Volume33Issue:2Pages:671-675
Abstract

This contribution analyzes the similarities and differences between the measured activities of 137Cs and excess 210Pb (210Pbex) in the cultivated brown and cinnamon soils of the Yimeng Mountain area, discusses the influence of soil texture on the measurement of 210Pbex, and presents differences between the two types of soils. Fields A and B were selected to represent the fields that contain cultivated brown and cinnamon soils, respectively. From either study field, one site of sectioned core and six bulk cores were collected to measure 137Cs levels, 210Pbex levels, and the particle-size composition of soil samples. Three undisturbed soil samples were collected to measure capillary and aeration porosities. The 137Cs inventories for the two study fields are very similar. The 137Cs is a man-made radionuclide, which means that its measured levels for soils are unaffected by soil texture. In contrast, levels of the naturally occurring 210Pbex of soils from Field A were lower than those of Field B by about 50%. In contrast to aquatic sediments, levels of 210Pbex in terrestrial surface soils are affected by the emanation of 222Rn from the soils. It can be assumed that the coarser the soils, the greater the emanation of 222Rn; in addition, the lower the measured 210Pbex, the greater the underestimate of this value. The cultivated brown soils in Field A are coarser than the cultivated cinnamon soils in Field B. As a result, 222Rn in Field A will diffuse more easily into the atmosphere than that in Field B. As a consequence, the measured 210Pbex in soils from Field A is much lower than the actual value, whereas the value measured for Field B is much closer to the actual value.

Keyword137cs 210pbex Brown Soil Cinnamon Soil Yimeng Mountain Area
DOI10.1007/s11631-014-0671-5
URL查看原文
Indexed ByCSCD ; 北大中文核心
Language英语
CSCD IDCSCD:5104561
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7580
Collection山地表生过程与生态调控重点实验室
Recommended Citation
GB/T 7714
ZHANG Yunqi,LONG Yi,YU Xingxiu,et al. A comparison of measured ~(137)Cs and excess ~(210)Pb levels in the cultivated brown and cinnamon soils of the Yimeng Mountain area[J]. Chinese Journal of Geochemistry,2014,33(2):671-675.
APA ZHANG Yunqi,LONG Yi,YU Xingxiu,&AN Juan.(2014).A comparison of measured ~(137)Cs and excess ~(210)Pb levels in the cultivated brown and cinnamon soils of the Yimeng Mountain area.Chinese Journal of Geochemistry,33(2),671-675.
MLA ZHANG Yunqi,et al."A comparison of measured ~(137)Cs and excess ~(210)Pb levels in the cultivated brown and cinnamon soils of the Yimeng Mountain area".Chinese Journal of Geochemistry 33.2(2014):671-675.
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