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| 紫色土草地表层土壤137Cs含量与粒度和有机质的相关性研究 | |
| 引用本文： | 贺良国,张一云,李家柱,龙翼,齐永青,贺秀斌,张信宝.紫色土草地表层土壤137Cs含量与粒度和有机质的相关性研究[J].水土保持通报,2007,27(2):43-45. |
| 作者姓名： | 贺良国 张一云 李家柱 龙翼 齐永青 贺秀斌 张信宝 |
| 作者单位： | 1. 四川大学,物理科学与技术学院,四川,成都,610064 2. 中国科学院,水利部,成都山地灾害与环境研究所,四川,成都,610041 3. 四川大学,物理科学与技术学院,四川,成都,610064;中国科学院,水利部,成都山地灾害与环境研究所,四川,成都,610041 |
| 基金项目： | 西部科研基金;中国科学院知识创新工程项目;国家重点基础研究发展计划(973计划);中国科学院水利部水土保持研究所国家重点实验室基金 |
| 摘 要： | 紫色土草地表层土壤的137Cs比活度与样品的筛分中值粒径(d50)相关较好,而与颗分中值粒径没有明显的相关性。137Cs主要被吸附于土壤颗粒的表面,土壤团聚体表面的矿物、岩石碎屑颗粒的137Cs吸附浓度高于团聚体内部的碎屑颗粒。筛分粒度中等的样品有机质含量高,粗和细粒度的样品有机质含量均低,137Cs比活度和有机质含量无明显相关。 |
| 关 键 词： | 紫色土 137Cs比活度 粒度 有机质 |
| 文章编号： | 1000-288X(2007)02-0043-03 |
| 收稿时间： | 2006/3/13 0:00:00 |
| 修稿时间： | 03 13 2006 12:00AM |
Relationship Between 137Cs Activities and Soil Particle Size in Purple Surface Soil on Grass Land |
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| He Liangguo,Zhang Yiyun,Li Jiazhu,Qi Yongqing,Long Yi,He Xiubin and Zhang Xinbao.Relationship Between 137Cs Activities and Soil Particle Size in Purple Surface Soil on Grass Land[J].Bulletin of Soil and Water Conservation,2007,27(2):43-45. | |
| Authors: | He Liangguo Zhang Yiyun Li Jiazhu Qi Yongqing Long Yi He Xiubin and Zhang Xinbao |
| Institution: | 1.Physics and Technology College, Sichuan University, Chengdu, Sichuan 610064, China ; 2. Institute of Mountain Hazard and Environment, Chinese Academy of Sciences, Chengdu , Sichuan 610041, China |
| Abstract: | 137Cs activities in purple surface soil on grass land have a good relationship with the medium grain size(d50)by sieving method,but do not have a defined relationship with the medium grain size(d50)by normal method.137Cs is mainly absorbed to surfaces of soil particles,and 137Cs concentrations of the mineral and rock particles in surface layers of the aggregates should be higher than those of the particles in the inner layers of the aggregates.As organic concentrations of the samples of medium size are higher than those of both coarse and fine samples,there is no relationship between 137Cs activities and organic concentrations. |
| Keywords: | purple soil 137Cs activities particle size soil organic matter |
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