Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1002/vzj2.20072 |
| Comparison of the performance of 22 models describing soil water retention curves from saturation to oven dryness | |
| Du, Chaoyang | |
| 通讯作者 | Du, CY (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China. |
| 来源期刊 | VADOSE ZONE JOURNAL
 |
| EISSN | 1539-1663 |
| 出版年 | 2020 |
| 卷号 | 19期号:1 |
| 英文摘要 | Soil water retention curve (SWRC) is key hydraulic property for vadose zone hydrology. Selected 22 SWRC models with different structures were divided into four types: traditional, single-segment, two-segment, and three-segment models. According to the accuracy and model selection criterion, these models were compared and evaluated using water retention data from saturation to oven dryness of 94 soil samples covering almost all soil types. Among the models, the EG model (exponential model combined with the Groenevelt-Grant model) shows the best performance, but the BC (Brooks-Corey) and VG (van Genuchten) models performed the worst. The relationship between model performance and complexity showed that traditional models with residual water content performed worse than segmental models from saturation to oven dryness, and the segmental models performed worse with an increase in the segment number. In general, models with more parameters perform better, but when the parameter number is greater than five, the model performance gradually worsens due to the equifinality of different parameters. The correlation analysis between soil properties on model performance showed that soil texture has a more significant effect on model performance than bulk density and organic matter content, because the models are primarily affected by their mathematical forms rather than the physical significance of the parameters. Each model picks its limitations and may apply to only one or particular group(s) of soil(s). Therefore, the complementarities of different models may be a great choice to improve SWRC fitting and simulation in arid soil. |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000618773300066 |
| WOS类目 | Environmental Sciences ; Soil Science ; Water Resources |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture ; Water Resources |
| 来源机构 | 中国科学院地理科学与资源研究所 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/369184 |
| 作者单位 | [Du, Chaoyang] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China; [Du, Chaoyang] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Chaoyang. Comparison of the performance of 22 models describing soil water retention curves from saturation to oven dryness[J]. 中国科学院地理科学与资源研究所,2020,19(1). |
| APA | Du, Chaoyang.(2020).Comparison of the performance of 22 models describing soil water retention curves from saturation to oven dryness.VADOSE ZONE JOURNAL,19(1). |
| MLA | Du, Chaoyang."Comparison of the performance of 22 models describing soil water retention curves from saturation to oven dryness".VADOSE ZONE JOURNAL 19.1(2020). |
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