承德市居民生活用水变化特征及影响因素分析

Variation Characteristics and Influencing Factors of Domestic Water in Chengde City

根据承德市2004-2013年用水量资料,分析承德市的用水结构特征和生活用水的变化趋势,结果表明:生活用水占总用水量的9.77%,城镇居民生活用水量呈增加趋势,平均每年增加156万m3,农村居民生活用水呈减少趋势,平均每年减少53万m3,城镇生活用水增加幅度远大于农村居民生活用水减小幅度,因此,总体上呈增加趋势。此外,对生活用水量变化的影响因素进行了分析,主要包括工程节水措施、水价调节作用和用水需求收入弹性指数三个方面。

According to the data of water consumption from 2004 to 2013in Chengde,the characteristics of water consumption structure and the variation trend of domestic water in Chengde are analyzed.The results show that domestic water accounted for 9.77% of the total amount,the urban domestic water increased with the average annual growth of 53 0000 m3.On the contrary,the rural domestic water decreased with the average annual reduction of 156 0000 m3.The increase rate of urban domestic water is higher than the decrease rate of rural domestic water.The factors affecting the water consumption are also analyzed,including the method of engineering water-saving,the function of water price adjustment,and the elastic index of water demand income.