First application of plutonium in soil erosion research on terraces

被引：0
作者：
Yong-Jing Guan
Wu Chen
Shen-Zhen Wang
Yu-Xin Hua
Qiao-Yan Jing
Zhi-Yong Liu
Chun-Ping Huang
De-Yu Wang
Hui-Juan Wang
Xian-Wen He
Mario De Cesare
Liang-Jia Cui
Hua He
Kai-Di Fan
Zi-Chen Guo
机构：
[1] Guangxi University,Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology
[2] Soochow University,State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD
[3] Radiation-Environment Management and Monitoring Station of Guangxi Zhuang Autonomous Region,X) and Collaborative Innovation Centre of Radiation Medicine of Jiangsu Higher Education Institutions
[4] CIRA - Italian Aerospace Research Centre,Department of Large Ground Testing Facilities
[5] University of Campania “Luigi Vanvitelli”,Department of Mathematics and Physics
[6] INFN - National Institute for Nuclear Physics,undefined
[7] Naples Section,undefined
来源：
Nuclear Science and Techniques | 2023年 / 34卷
关键词：
Soil erosion; Plutonium; Cs; Tracer method; Terraces;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The spatial distributions of 239+240Pu and 137Cs in soils from Longji Rice Terraces were investigated to evaluate soil erosion. The activity concentrations of 239+240Pu and 137Cs in the surface soils of the paddy fields were in the range of 0.089–0.734 and 1.80–7.88 mBq/g, respectively. The activities of 239+240Pu and 137Cs showed very similar distribution trends, first increasing and then decreasing with increasing elevation. The 240Pu/239Pu atom ratios in the surface soils ranged from 0.162 to 0.232. The activities of 239+240Pu and 137Cs in the soil cores tended to be uniformly distributed within the plowed layer and declined exponentially below this depth. The mean soil erosion rates of Longji Rice Terraces estimated by 239+240Pu and 137Cs tracer methods were 5.44 t/(ha·a) and 5.16 t/(ha·a), respectively, which demonstrated that plutonium can replace 137Cs as an ideal tracer for soil erosion research in the future. Landform features are the main factors affecting the distribution of plutonium and 137Cs as well as soil erosion in the Longji Rice Terraces.
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