| Modeling soil shrinkage curve across a wide range of soil types | |
| Peng, X; Horn, R | |
| 刊名 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
 |
| 2005-05-01 | |
| 卷号 | 69期号:3页码:584-592 |
| ISSN号 | 0361-5995 |
| DOI | 10.2136/sssaj2004.0146 |
| 通讯作者 | Peng, X(xh.peng@soils.uni-kiel.de) |
| 英文摘要 | Knowledge about soil shrinkage improves the understanding and prediction of unsaturated hydraulic properties in nonrigid soils. Until now, there is no general model available, which is widely accepted and applied to quantify soil shrinkage curves. The objectives in this present paper are (i) to propose a new and simple model and to test it with a wide range of soil types; (ii) to mathematically distinguish the shrinkage zones; and (iii) to evaluate probable physical meaning of its parameters. The results show that the modified van Genuchten water retention curve model fits the data obtained from Reeve and Hall's six soils, Talsma's three soils and three Typic Chromexert' soils well and the correlation coefficients in the tested 12 soils are always higher than 0.995. The different shrinkage zones defined by the mathematical method agree well with actual soil shrinkage curve. The proportional shrinkage zone accounts for 30.9 to 79.9% of the total water loss and 63.5 to 93.9% of the total volume decrease, while the zero shrinkage zone only accounts for < 2.7% of the total volume decrease. The alpha, n, and m parameters of the modified van Genuchten model control soil shrinkage curve. |
| 收录类别 | SCI |
| WOS关键词 | SWELLING SOILS ; VOLUME CHANGE ; CLAY SOIL ; WATER ; EQUATION |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SOIL SCI SOC AMER |
| WOS记录号 | WOS:000229009800002 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558453 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Peng, X |
| 作者单位 | 1.CAU Kiel, Inst Plant Nutr & Soil Sci, D-24118 Kiel, Germany 2.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, X,Horn, R. Modeling soil shrinkage curve across a wide range of soil types[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2005,69(3):584-592. |
| APA | Peng, X,&Horn, R.(2005).Modeling soil shrinkage curve across a wide range of soil types.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,69(3),584-592. |
| MLA | Peng, X,et al."Modeling soil shrinkage curve across a wide range of soil types".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 69.3(2005):584-592. |
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