叶尔羌绿洲水资源利用与耗水分析

应用干旱区平原绿洲四水转化模型,对新疆叶尔羌河平原绿洲的水土资源不同利用情景的水资源转化和消耗进行模拟,研究地下水的适宜开采量和灌溉规模问题。结果表明:现状条件下,社会经济耗水量占总耗水量的53%~60%;如果维持灌溉地年耗水650 mm左右、非灌溉地300 mm左右,那么最大灌溉面积约为850万亩,适宜的地下水利用量约为10亿m3,对应的渠系水利用系数为0.49。

Water resources utilization and consumption in Yarkant Oasis

Water consumption model of four-types of water is applied in plain oasis in the dry area such as Yarkant Oasis in Xinjiang, for simulating transformation and consumption of water resources under different scenarios of water and land utilization and finding out suitable amount of groundwater exploitation for irrigation. The result shows that, under the current situation, social-economic water use occupies 53%-60% of the total. If annual water consumption of irrigated land remains at 650 mm or so and non irrigated land around 300 mm, the maximum irrigated area is 8.5 million mu, then utilization of 1 billion cubic metres of groundwater is feasible, and the corresponding coefficient of water use of canal system is 0.49.