A unified expression for grain size distribution of soils
文献类型：期刊论文
| 作者 | Li Yong1,2 ; Huang Chengmin3; Wang Baoliang4; Tian Xiafei1,5; Liu Jingjing1,2
|
| 刊名 | GEODERMA
 |
| 出版日期 | 2017-02-15 |
| 卷号 | 288页码:105-119 |
| 关键词 | Soils Granular materials Grain size distribution Soil generation and evolution Soil dynamics |
| ISSN号 | 0016-7061 |
| 通讯作者 | Li Yong |
| 英文摘要 | Grain size distribution (GSD) is fundamental for soils and usually described by a set of graphic parameters (e.g., median size, kurtosis, skewness, uniform and curvature coefficient). Some probability distributions (e.g., lognormal and Weibull distribution) are used for special cases, but no general expression is available. In this paper we propose a general distribution form of P(D) = CD(-mu)exp(-D/Dc) for various soil materials, with P(D) the exceedance percentage and C,mu and D-c are parameters determined by the grain size frequency data. The power-law and exponential part of this expression respectively responds to the self-similar and random processes of grain fragmentation and accumulation in soil generation and evolution. The GSD parameters are distinct in soils and their variation reflects the changes in grain composition, such as the grain migration and segregation in landslides, avalanches, debris flows and sedimentary deposits. In addition, the GSD also fits the pore size of granular materials, confirming the grain-pore duality and suggesting an important role of the GSD expression in dynamics of soils and granular media in general. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | HYDRAULIC CONDUCTIVITY FUNCTION ; PARTICLE-SIZE ; WATER-RETENTION ; SEQUENTIAL FRAGMENTATION ; LOGNORMAL DISTRIBUTIONS ; SEDIMENT TRANSPORT ; ORGANIC-MATTER ; FRACTAL MODEL ; FREQUENCY-DISTRIBUTIONS ; UNSATURATED SOILS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000390622500010 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/17957]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Sichuan Univ, Dept Environm Sci & Engn, Chengdu 610065, Peoples R China 4.Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yong,Huang Chengmin,Wang Baoliang,et al. A unified expression for grain size distribution of soils[J]. GEODERMA,2017,288:105-119. |
| APA | Li Yong,Huang Chengmin,Wang Baoliang,Tian Xiafei,&Liu Jingjing.(2017).A unified expression for grain size distribution of soils.GEODERMA,288,105-119. |
| MLA | Li Yong,et al."A unified expression for grain size distribution of soils".GEODERMA 288(2017):105-119. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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