Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S Model
In this study, the Drainmod-S model was used to vary soil salt concentration and the effect of underground drainage on the amount of leaching in a physical model (large lysimeter). A soil extractor was installed at depths of 40, 50, and 70 cm at a distance of 35 cm from the drainage to measure the s...
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| Format: | Article |
| Language: | fas |
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Isfahan University of Technology
2022-05-01
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| Series: | علوم آب و خاک |
| Subjects: | |
| Online Access: | http://jstnar.iut.ac.ir/article-1-4161-en.html |
| _version_ | 1811312123107606528 |
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| author | M. Masoomi M. Pourgholam-Amiji M. Parsinejad |
| author_facet | M. Masoomi M. Pourgholam-Amiji M. Parsinejad |
| author_sort | M. Masoomi |
| collection | DOAJ |
| description | In this study, the Drainmod-S model was used to vary soil salt concentration and the effect of underground drainage on the amount of leaching in a physical model (large lysimeter). A soil extractor was installed at depths of 40, 50, and 70 cm at a distance of 35 cm from the drainage to measure the salinity of the soil solution. In this study, three scenarios were applied including salinity profiles under conventional conditions (mid-season and end-season drainage), soil salinity profiles under different drainage conditions, and prior scenarios with saline irrigation. The second and third scenarios were applied in four drainage stages, respectively. These stages include transplanting and mid-season drainage (days 15 to 20), mid-season drainage (days 35 to 40), mid-season and end-season drainage (days 55 to 60), and end-season drainage (days 75 to 80). The results showed that after simulating the total solute concentration overtime at a depth of 40 cm and comparing it with the measured values, the coefficient of determination (R2) was 0.77 indicating an acceptable Drainmod-S model simulation. This parameter for simulating solute concentration at 50 and 70 cm depth was 0.76 and 0.75, respectively. The mean absolute error parameter (MAE) value was also negligible. |
| first_indexed | 2024-04-13T10:31:48Z |
| format | Article |
| id | doaj.art-8d2e88849ab342edae533142ee28523f |
| institution | Directory Open Access Journal |
| issn | 2476-3594 2476-5554 |
| language | fas |
| last_indexed | 2024-04-13T10:31:48Z |
| publishDate | 2022-05-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | علوم آب و خاک |
| spelling | doaj.art-8d2e88849ab342edae533142ee28523f2022-12-22T02:50:10ZfasIsfahan University of Technologyعلوم آب و خاک2476-35942476-55542022-05-01261277294Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S ModelM. Masoomi0M. Pourgholam-Amiji1M. Parsinejad2 University of Tehran, Karaj University of Tehran, Karaj University of Tehran, Karaj In this study, the Drainmod-S model was used to vary soil salt concentration and the effect of underground drainage on the amount of leaching in a physical model (large lysimeter). A soil extractor was installed at depths of 40, 50, and 70 cm at a distance of 35 cm from the drainage to measure the salinity of the soil solution. In this study, three scenarios were applied including salinity profiles under conventional conditions (mid-season and end-season drainage), soil salinity profiles under different drainage conditions, and prior scenarios with saline irrigation. The second and third scenarios were applied in four drainage stages, respectively. These stages include transplanting and mid-season drainage (days 15 to 20), mid-season drainage (days 35 to 40), mid-season and end-season drainage (days 55 to 60), and end-season drainage (days 75 to 80). The results showed that after simulating the total solute concentration overtime at a depth of 40 cm and comparing it with the measured values, the coefficient of determination (R2) was 0.77 indicating an acceptable Drainmod-S model simulation. This parameter for simulating solute concentration at 50 and 70 cm depth was 0.76 and 0.75, respectively. The mean absolute error parameter (MAE) value was also negligible.http://jstnar.iut.ac.ir/article-1-4161-en.htmlunconventional waterpaddy fieldsland reclamationenvironmentsoil salinity fluctuationsdrainmod-s |
| spellingShingle | M. Masoomi M. Pourgholam-Amiji M. Parsinejad Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S Model علوم آب و خاک unconventional water paddy fields land reclamation environment soil salinity fluctuations drainmod-s |
| title | Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S Model |
| title_full | Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S Model |
| title_fullStr | Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S Model |
| title_full_unstemmed | Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S Model |
| title_short | Investigation of Salt Concentration Fluctuations of Paddy Fields in Underground Drainage Conditions and Application of Applied Management Scenarios Using Drainmod-S Model |
| title_sort | investigation of salt concentration fluctuations of paddy fields in underground drainage conditions and application of applied management scenarios using drainmod s model |
| topic | unconventional water paddy fields land reclamation environment soil salinity fluctuations drainmod-s |
| url | http://jstnar.iut.ac.ir/article-1-4161-en.html |
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