Predicting available water of soil from particle-size distribution and bulk density in an oasis-desert transect in northwestern China
文献类型：SCI/SSCI论文
| 作者 | Li D. F.; Gao, G. Y.; Shao, M. A.; Fu, B. J. |
| 发表日期 | 2016 |
| 关键词 | Soil water characteristic curve Soil available water Pedotransfer functions Oasis-desert transect hydraulic-properties pedotransfer functions retention properties liquid retention neural-networks porous-media model pore conductivity capacity |
| 英文摘要 | A detailed understanding of soil hydraulic properties, particularly the available water content of soil, (AW, cm(3) cm(-3)), is required for optimal water management. Direct measurement of soil hydraulic properties is impractical for large scale application, but routinely available soil particle-size distribution (PSD) and bulk density can be used as proxies to develop various prediction functions. In this study, we compared the performance of the Arya and Paris (AP) model, Mohammadi and Vanclooster (MV) model, Arya and Heitman (AH) Model, and Rosetta program in predicting the soil water characteristic curve (SWCC) at 34 points with experimental SWCC data in an oasis-desert transect (20 x 5 km) in the middle reaches of the Heihe River basin, northwestern China. The idea of the three models emerges from the similarity of the shapes of the PSD and SWCC. The AP model, MV model, and Rosetta program performed better in predicting the SWCC than the AH model. The AW determined from the SWCCs predicted by the MV model agreed better with the experimental values than those derived from the AP model and Rosetta program. The fine-textured soils were characterized by higher AW values, while the sandy soils had lower AW values. The MV model has the advantages of having robust physical basis, being independent of database related parameters, and involving subclasses of texture data. These features make it promising in predicting soil water retention at regional scales, serving for the application of hydrological models and the optimization of soil water management. (C) 2016 Elsevier B.V. All rights reserved. |
| 出处 | Journal of Hydrology |
| 卷 | 538 |
| 页 | 539-550 |
| 语种 | 英语 |
| ISSN号 | 0022-1694 |
| DOI标识 | 10.1016/j.jhydrol.2016.04.046 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43052]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Li D. F.,Gao, G. Y.,Shao, M. A.,et al. Predicting available water of soil from particle-size distribution and bulk density in an oasis-desert transect in northwestern China. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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