Development of a soil wetting pattern estimation model for drip irrigation
Accurately estimating the soil wetting pattern that closely reflects the measured value can improve the water use efficiency for drip irrigation. Ignoring the effect of the initial soil water content on the soil wetting pattern affects the accuracy of the estimated results to a certain extent. This...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2023-01-01
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| Series: | Water Supply |
| Subjects: | |
| Online Access: | http://ws.iwaponline.com/content/23/1/144 |
| _version_ | 1828012771537584128 |
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| author | Yuchen Li Wei-Bo Nie Zheng-Jiang Feng |
| author_facet | Yuchen Li Wei-Bo Nie Zheng-Jiang Feng |
| author_sort | Yuchen Li |
| collection | DOAJ |
| description | Accurately estimating the soil wetting pattern that closely reflects the measured value can improve the water use efficiency for drip irrigation. Ignoring the effect of the initial soil water content on the soil wetting pattern affects the accuracy of the estimated results to a certain extent. This research aimed to develop a soil wetting pattern estimation model for drip irrigation that included four easily measurable parameters (i.e., initial soil water content, saturated hydraulic conductivity, total volume of applied water, and emitter discharge rate) based on dimensional analysis theory. In this study, the wetting front advance data of 12 typical soil textures were obtained in Hydrus-2D/3D. The estimated values were then compared with measured or simulated wetting front advance values. For different experiments, the mean absolute error, root mean square error, and mean relative error varied from 2.77 to 4.69 cm, 6.20 to 10.61 cm, and 5.61% to 10.51%, respectively. Compared with the existing models, the proposed model was more consistent between the measured and simulated values. Therefore, the proposed model of this study is efficient and simple, which can help accurately estimate the soil wetting pattern of drip irrigation with a variety of soil textures.
HIGHLIGHTS
An estimation model for soil wetting patterns of drip irrigation was proposed and verified.;
Considering the initial soil water content can improve the accuracy of soil wetting pattern estimation model.;
The proposed model allows to estimate the horizontal and vertical wetting front advance and suitable for various soil textures.; |
| first_indexed | 2024-04-10T09:37:53Z |
| format | Article |
| id | doaj.art-a5c8f591acfb4fd9bf82d4d409b15032 |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-04-10T09:37:53Z |
| publishDate | 2023-01-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-a5c8f591acfb4fd9bf82d4d409b150322023-02-17T17:11:11ZengIWA PublishingWater Supply1606-97491607-07982023-01-0123114416110.2166/ws.2022.429429Development of a soil wetting pattern estimation model for drip irrigationYuchen Li0Wei-Bo Nie1Zheng-Jiang Feng2 State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China Accurately estimating the soil wetting pattern that closely reflects the measured value can improve the water use efficiency for drip irrigation. Ignoring the effect of the initial soil water content on the soil wetting pattern affects the accuracy of the estimated results to a certain extent. This research aimed to develop a soil wetting pattern estimation model for drip irrigation that included four easily measurable parameters (i.e., initial soil water content, saturated hydraulic conductivity, total volume of applied water, and emitter discharge rate) based on dimensional analysis theory. In this study, the wetting front advance data of 12 typical soil textures were obtained in Hydrus-2D/3D. The estimated values were then compared with measured or simulated wetting front advance values. For different experiments, the mean absolute error, root mean square error, and mean relative error varied from 2.77 to 4.69 cm, 6.20 to 10.61 cm, and 5.61% to 10.51%, respectively. Compared with the existing models, the proposed model was more consistent between the measured and simulated values. Therefore, the proposed model of this study is efficient and simple, which can help accurately estimate the soil wetting pattern of drip irrigation with a variety of soil textures. HIGHLIGHTS An estimation model for soil wetting patterns of drip irrigation was proposed and verified.; Considering the initial soil water content can improve the accuracy of soil wetting pattern estimation model.; The proposed model allows to estimate the horizontal and vertical wetting front advance and suitable for various soil textures.;http://ws.iwaponline.com/content/23/1/144dimensional analysisdrip irrigationinitial soil water contentpoint source infiltrationsoil wetting pattern model |
| spellingShingle | Yuchen Li Wei-Bo Nie Zheng-Jiang Feng Development of a soil wetting pattern estimation model for drip irrigation Water Supply dimensional analysis drip irrigation initial soil water content point source infiltration soil wetting pattern model |
| title | Development of a soil wetting pattern estimation model for drip irrigation |
| title_full | Development of a soil wetting pattern estimation model for drip irrigation |
| title_fullStr | Development of a soil wetting pattern estimation model for drip irrigation |
| title_full_unstemmed | Development of a soil wetting pattern estimation model for drip irrigation |
| title_short | Development of a soil wetting pattern estimation model for drip irrigation |
| title_sort | development of a soil wetting pattern estimation model for drip irrigation |
| topic | dimensional analysis drip irrigation initial soil water content point source infiltration soil wetting pattern model |
| url | http://ws.iwaponline.com/content/23/1/144 |
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