Modeling Moisture Dynamics in the Irrigated Areas

Abstract: Water is an essential resource, especially in arid contrives such as Uzbekistan and most parts Central Asia. Investigation of moisture alterations at different environment was carried out more than 7 years period in Uzbekistan and Commonwealth Independent States (Kazakhstan, Tajikistan and Turkmenistan). Results of theoretical researches on dynamics of ground humidity have shown: (1) similarity of physical processes of change of humidity of soil on different irrigated areas; (2) hysteresis of the nature of humidity at an irrigation and drainage; (3) sharp recession of humidity of soil in the root zone. Key words: moisture transition, drainage system, underground water table.

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