Numerical Models for Solving Water Problems of Irrigated Agriculzure in South-East Kazakhstan
Sotnikov E. Inelova Z. Miroshnichenko O. Trushel L. Umbetaliyev D. Shakibayev I.
December 2024Engineered Science Publisher
ES Food and Agroforestry
2024#18
Agriculture, especially irrigated cropping, plays a vital role in Kazakhstans economy. To address the challenges of forecasting changes in hydrogeological conditions due to irrigation, we employ permanent operational models based on the principles of geoinformation systems and mathematical modeling. We have developed a mathematical model of the Akdalinsky irrigated massif to assess how irrigation impacts environmental components during agricultural development. In developing this model, we used design and operational data from the irrigation system, information on irrigation practices and agricultural activities, results from soil melioration efforts, and long-term hydrogeological observations of groundwater levels and chemistry. The model accounts for vegetation cycles and includes annual updates of input data, geofiltration schematization, and model calibration. It was used to forecast changes in hydrogeological and meliorative conditions under different scenarios, considering irrigation and economic factors. Rice planting schemes have a significant influence on hydrogeological conditions. If the check area doubles between 1988 and 2023, the area with groundwater depths of less than 1 meter will decrease by 25%, while the area with groundwater depths of 3-5 meters will increase by 27.7%. Reducing or discontinuing rice cultivation will push groundwater depths beyond the critical level of 3.75 meters, leading to irreversible land salinization and rendering the land unsuitable for agriculture.
Geoinformation system , Groundwater , Irrigation , Numerical modeling
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Laboratory for Modeling Hydrodynamic and Geoecological Processes, Ahmedsafin Institute of Hydrogeology and Environmental Geoscience, Satbayev University, Valikhanov 94, Almaty, 050010, Kazakhstan
Al-Farabi Kazakh National University, Department of Biology and Biotechnology, al-Farabi Ave. 71/19, Almaty, 050010, Kazakhstan
Hydrogeological-Reclamation Center of the Ministry of Agriculture of the Republic of Kazakhstan, Baishev 113, Almaty, 050018, Kazakhstan
Laboratory for Modeling Hydrodynamic and Geoecological Processes
Al-Farabi Kazakh National University
Hydrogeological-Reclamation Center of the Ministry of Agriculture of the Republic of Kazakhstan
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