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Construction of an Integrated Hydrological Model for Sustainable Water Resources Management in the Chirchik River Basin, Uzbekistan
Titre : Construction of an Integrated Hydrological Model for Sustainable Water Resources Management in the Chirchik River Basin, Uzbekistan
Auteur : Usmanov Saidislomkhon
Université de soutenance : Kyushu University
Grade : Doctor of Engineering 2017
Résumé partiel
The Chirchik River Basin is considered one of the country’s largest and most
important basins. It is located in the northeastern province of Tashkent, Uzbekistan. The
economy of the basin relies heavily on agricultural production ; employing most of the
region’s population and consuming the lionshare of available water through irrigation
practices. Unsurprising, the Chirchik River basin is facing several potentially severe
water related problems, including increased aridity and, land salinization, and declines in
agricultural production. Continuously increasing the groundwater level and the inefficient
use of river waters are expected to further compound these problems, and their effects.
Poor management of water resources due to limited knowledge of hydrological processes
has been identified as a root cause of water resource issues in the basin. Efficient
management requires accurate estimation and modeling of water balance and main
hydrological parameters. In order to achieve reliable and accurate results, irrigation
processes, which play an important role in the hydrological cycle, should be included in
the model to account for the contribution of irrigation water to other hydrological
parameters. In this concern, an integrated hydrological model was developed to study
hydrological processes in the basin territory through detailed water balance estimation.
Previously, the empirical coefficient (0.0023) of Hargreaves model (HM) was
modified under local climatic conditions of Tashkent province using standard Penman
Monteih FAO 56 (FAO-56 PM) model estimates for every month of the years. Then the
suitable interpolation methods were determined among deterministic, geostatistical and
regression methods to spatial modeling of ETo over Tashkent province using modified
HM estimates. Using the estimated reference evapotranspiration, hydrological parameters
were estimated of Chirchik River Basin using the integrated hydrological model. The
groundwater and surface water interaction and spatial variability of hydrological
parameters are also analyzed.
Page publiée le 24 janvier 2018