Assessment Of The Potential For Zoning Water-Saving Irrigation Technologies Based On The Aridity Index

This article presents the results of assessing aridity indicators by districts of Jizzakh region for the period 2021–2024. Table 1 provides calculations of M.I. Budyko’s radiation aridity index for total and irrigated areas, showing that the values vary within a very narrow range across districts, which indicates a relatively uniform background of natural radiation aridity in the region. Table 2 presents a comparative analysis of an improved aridity index that accounts for irrigation-specific factors and components of the water balance; it is shown that the aridity index for total areas generally ranges from 1.2 to 1.6, while for irrigated areas in some districts it reaches 2.0–3.0. This reflects a deficit of water resources and a high drought potential during the vegetation period, and confirms the urgency of introducing water-saving and innovative irrigation technologies, differentiating crop structure, and implementing adaptive water resources management, especially in the districts of Zomin, Zafarabad, Arnasay and Mirzachul.

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