IMHE OpenIR  > 山地表生过程与生态调控重点实验室
A modified model for estimating the full description of soil particle size distribution
Zhao, Pei1,2; Shao, Ming-an3; Omran, Wail4; She, Dongli5
Corresponding AuthorShao, MA
2013
Source PublicationCANADIAN JOURNAL OF SOIL SCIENCE
ISSN0008-4271
Volume93Issue:1Pages:65-72
SubtypeArticle
AbstractZhao, P., Shao, M-a., Omran, W. and She, D. 2013. A modified model for estimating the full description of soil particle size distribution. Can. J. Soil Sci. 93: 65-72. A full description of the particle size distribution (PSD) curve is widely used as a basis for estimating soil hydraulic properties. However, the incomplete experimental data of PSD sets (i.e., percent clay, silt, and sand) often limit its uses. In this study, an empirical model modified from the Weibull model was used to estimate the complete description PSD from clay, silt and sand fractions. Results show that the estimated distribution agrees reasonably well with the actual distribution for 168 soils samples studied within six different textures. The values of coefficients of determination, the average absolute deviation and the maximum absolute deviation were 98.6%, 3.3% and 12.6%, respectively. The modified model performed best for silt loam samples containing about 70% silt content. The estimation accuracy varied with radii interval. For the estimated PSD curve, a 0.05-0.1 mm size interval was most poorly estimated and had the maximum deviation (28.2%), while the 0.5-1 mm interval was estimated well by the modified model. The model is recommended to estimate complete soil PSD using only clay, silt and sand fractions, which can be well fitted by the Weibull model. Further studies are suggested to validate the PSD estimation by this model when applied to soils with greater variation in texture.
KeywordWeibull Model Alluvial Soils Loess Plateau Particle Size Distribution Soil Texture
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.4141/CJSS2012-003
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordORGANIC-MATTER ; TEXTURE ; TILLAGE ; CARBON
Language英语
Quartile4区
TOP
WOS SubjectSoil Science
WOS IDWOS:000315010900007
Funding OrganizationOpen Fund of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau(10501-293) ; Fund of Chinese Academy of Sciences Dean's Excellent Award ; Program for Innovative Research Team in University(IRT0749)
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5457
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu, Peoples R China
2.Chinese Acad Sci, State Key Lab Soil Eros & Dryand Farming Loess Pl, Inst Soil & Water Conservat, Yangling, Peoples R China
3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
4.Menoufia Univ, Fac Agr, Dept Soil Sci, Shibin Al Kawm, Egypt
5.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing, Jiangsu, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhao, Pei,Shao, Ming-an,Omran, Wail,et al. A modified model for estimating the full description of soil particle size distribution[J]. CANADIAN JOURNAL OF SOIL SCIENCE,2013,93(1):65-72.
APA Zhao, Pei,Shao, Ming-an,Omran, Wail,&She, Dongli.(2013).A modified model for estimating the full description of soil particle size distribution.CANADIAN JOURNAL OF SOIL SCIENCE,93(1),65-72.
MLA Zhao, Pei,et al."A modified model for estimating the full description of soil particle size distribution".CANADIAN JOURNAL OF SOIL SCIENCE 93.1(2013):65-72.
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