Changes in Uzbekistan's water resources and its impact on supply pressure
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Abstract:
The change in water resources and the consequent water resources supply pressure in Uzbekist an is analyzed by literrture reviewing, based on agricultural, remote sensing, and hydro-meteorological reanalysis data. The analysis shows that: since1980, the average annual water withdraw als have increased from 5.9 billion m3 to 10.2 bilion m3 in Uzbekistan and more than 90% of water resources are consumed for irrigation agriculture: despite declines in both areas of cropland(200 km2/a) and the proportion of high water-consuming crops(-3.24%), the water demand per unit area is still increasing(3.27 mm/a) under the influence of a warming climate(0.31℃/10a), the overall water demand is still increasing (275 million m3/a); simultaneously, the decrease of upstream inflow and the further increase in water use in upstream countris will further aggravate the regional water short age and supply pressure. To deal with the problem of water resouroes, Uzbekistan needs to strengthen water management, improve irrigation technology, and improve water use efficiency. Therefore, it is necessary to strengthen cooperation with neighboring countries and to seek ways to improve the allocation and management of water resources of transboundary rivers. The study will help to enhance understanding of the water resource problems in U zbekistan and provide a scientific basis for addressing them, as well as support the development of cooperation in the "Belt and Road"region.
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