Modeling of vertical moisture transfer in agricultural soils under two land use types
The intensive exploitation of soils leads to deterioration of their water and nutrient regime, soil erosion, salinization and desertification. The atmospheric moisture is only source of water supply of the dry steppe’s soils. Тaking into account the expected climate warming and changes in precipitat...
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| Format: | Article |
| Language: | English |
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Soil Science Society of Pakistan (SSSP)
2020-12-01
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| Series: | Soil & Environment |
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| Online Access: | http://se.org.pk/File-Download.aspx?archivedpaperid=898 |
| _version_ | 1818566525527785472 |
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| author | Svetlana V. Baboshkina Alexandr V. Puzanov Tamara A. Rozhdestvenskaya Olga A. Elchininova |
| author_facet | Svetlana V. Baboshkina Alexandr V. Puzanov Tamara A. Rozhdestvenskaya Olga A. Elchininova |
| author_sort | Svetlana V. Baboshkina |
| collection | DOAJ |
| description | The intensive exploitation of soils leads to deterioration of their water and nutrient regime, soil erosion, salinization and desertification. The atmospheric moisture is only source of water supply of the dry steppe’s soils. Тaking into account the expected climate warming and changes in precipitation, the process of water infiltration and distribution in steppe soils is of particular interest. The moisture regime of chernozems in the Uymon intermountain depression landscapes with different agricultural use types was investigated. The parameters of approximation of water retention curve (WRC) by the Van Genuchten function were determined by semiempirical computational method based on data of the particle size distribution soil, soil density, moisture of withering and the lowest moisture capacity, in RETC. It was shown that all measured soil-hydrological parameters of chernozems well coincided with WRC built at RETC using only the particle size distribution , density, porosity, TH33 and TH1500. In HYDRUS-1D we calculated the volume of reduction of moisture reserves in the upper soil horizons as a result of water infiltration into the lower layers. According to the results, the moisture content in agricultural soils depends on the land use type: for example, saturated soil moisture is higher in the soil with no-till practice than in annually plowed soil. It is shown that in the chernozem of arable land (with oat crops) there is a faster soaking of all soil layers than in the chernozem under the mixed grass, in which the transpiration factor corrects the dynamics of humidity to a greater extent. |
| first_indexed | 2024-12-14T01:54:48Z |
| format | Article |
| id | doaj.art-59fedbb5cab84be0893a8b3d8ca89529 |
| institution | Directory Open Access Journal |
| issn | 2074-9546 2075-1141 |
| language | English |
| last_indexed | 2024-12-14T01:54:48Z |
| publishDate | 2020-12-01 |
| publisher | Soil Science Society of Pakistan (SSSP) |
| record_format | Article |
| series | Soil & Environment |
| spelling | doaj.art-59fedbb5cab84be0893a8b3d8ca895292022-12-21T23:21:15ZengSoil Science Society of Pakistan (SSSP)Soil & Environment2074-95462075-11412020-12-0139221122210.25252/SE/2020/162260Modeling of vertical moisture transfer in agricultural soils under two land use typesSvetlana V. Baboshkina0Alexandr V. Puzanov1Tamara A. Rozhdestvenskaya2Olga A. Elchininova3Institute for Water and Environmental Problems, Siberian Branch of the Russian Academy of Sciences, Barnaul, RussiaInstitute for Water and Environmental Problems, Siberian Branch of the Russian Academy of Sciences, Barnaul, RussiaInstitute for Water and Environmental Problems, Siberian Branch of the Russian Academy of Sciences, Barnaul, RussiaInstitute for Water and Environmental Problems, Siberian Branch of the Russian Academy of Sciences, Barnaul, RussiaThe intensive exploitation of soils leads to deterioration of their water and nutrient regime, soil erosion, salinization and desertification. The atmospheric moisture is only source of water supply of the dry steppe’s soils. Тaking into account the expected climate warming and changes in precipitation, the process of water infiltration and distribution in steppe soils is of particular interest. The moisture regime of chernozems in the Uymon intermountain depression landscapes with different agricultural use types was investigated. The parameters of approximation of water retention curve (WRC) by the Van Genuchten function were determined by semiempirical computational method based on data of the particle size distribution soil, soil density, moisture of withering and the lowest moisture capacity, in RETC. It was shown that all measured soil-hydrological parameters of chernozems well coincided with WRC built at RETC using only the particle size distribution , density, porosity, TH33 and TH1500. In HYDRUS-1D we calculated the volume of reduction of moisture reserves in the upper soil horizons as a result of water infiltration into the lower layers. According to the results, the moisture content in agricultural soils depends on the land use type: for example, saturated soil moisture is higher in the soil with no-till practice than in annually plowed soil. It is shown that in the chernozem of arable land (with oat crops) there is a faster soaking of all soil layers than in the chernozem under the mixed grass, in which the transpiration factor corrects the dynamics of humidity to a greater extent.http://se.org.pk/File-Download.aspx?archivedpaperid=898chernozemland-usewater retentionhydraulic conductivitysoil moisturehydrus-1d |
| spellingShingle | Svetlana V. Baboshkina Alexandr V. Puzanov Tamara A. Rozhdestvenskaya Olga A. Elchininova Modeling of vertical moisture transfer in agricultural soils under two land use types Soil & Environment chernozem land-use water retention hydraulic conductivity soil moisture hydrus-1d |
| title | Modeling of vertical moisture transfer in agricultural soils under two land use types |
| title_full | Modeling of vertical moisture transfer in agricultural soils under two land use types |
| title_fullStr | Modeling of vertical moisture transfer in agricultural soils under two land use types |
| title_full_unstemmed | Modeling of vertical moisture transfer in agricultural soils under two land use types |
| title_short | Modeling of vertical moisture transfer in agricultural soils under two land use types |
| title_sort | modeling of vertical moisture transfer in agricultural soils under two land use types |
| topic | chernozem land-use water retention hydraulic conductivity soil moisture hydrus-1d |
| url | http://se.org.pk/File-Download.aspx?archivedpaperid=898 |
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