| 江苏省句容地区137Cs背景值研究 |
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| 引用本文： | 徐从安,杨 浩,刘晓海,杨九东,张明礼.江苏省句容地区137Cs背景值研究[J].土壤,2009,41(5):733-737. |
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| 作者姓名： | 徐从安 杨 浩 刘晓海 杨九东 张明礼 |
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| 作者单位： | 1. 南京师范大学地理科学学院,南京,210046
2. 云南环境科学研究院,昆明,650034 |
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| 基金项目： | 国家自然科学基金重点项目，滇池流域退耕还林工程对侵蚀产沙响应的多同位素联合示踪研究项目，高等学校博士学科点专项科研基金 |
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| 摘 要： | 土壤侵蚀问题是当今世界面临主要环境问题之一,137Cs示踪作为一种应用于土壤侵蚀研究比较成熟的方法,其背景值的确定是前提.本研究通过两个疑似背景值点样品的采集,探讨了耕地土壤剖面137Cs活度的分布特征、增加样品的采集数量,并且与其他研究者的研究进行对比,确定江苏省句容地区137Cs的背景值为1820.36 Bq/m2.此活度与江苏省其他地区的背景值接近,可以用该背景值进行土壤侵蚀速率以及农业非点源污染负荷估算.
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| 关 键 词： | 137Cs背景值 剖面分布 空间变化 活度 |
Study on reference 137CS inventory of Jurong region in Jiangsu Province |
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| XU Cong-an,YANG Hao,LIU Xiao-hai,YANG Jiu-dong,ZHANG Ming-li.Study on reference 137CS inventory of Jurong region in Jiangsu Province[J].Soils,2009,41(5):733-737. |
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| Authors: | XU Cong-an YANG Hao LIU Xiao-hai YANG Jiu-dong ZHANG Ming-li |
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| Institution: | Geography College of Nanjing Normal University, Nanjing 210046 |
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| Abstract: | Soil erosion is one of the primary environment problems in today's world, and ~(137)Cs tracing technology is a mature method in studying soil erosion. It is vital to confirm the reference ~(137)Cs inventory. The paper, giving a new method for determining the reference ~(137)Cs inventory of soil in the region where lacks the perfect reference sample sites, studied the characteristic of ~(137)Cs soil profile distribution and the increase of the number of the soil samples, by comparing with the other's studies, the determined soil reference ~(137)Cs inventory was 1 820.36 Bq/m~2 in Jurong region, Jiangsu Province. This reference inventory was close to the value nearby Jurong region in Jiangsu Province, so the activity was reliable and may be used to estimate the loss rate of soil and the load of agricultural non-point contamination. |
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| Keywords: | Reference 137Cs Profile distribution Spatial variation Activity |
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