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天津市水资源足迹趋势预测与动态调节

Keywords: 水资源足迹,虚拟水贸易,趋势预测,动态调节,天津市

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Abstract:

为解决区域水资源相对不足的问题,以天津市为例,从水足迹视角,根据其实际情况,综合运用自上而下和自下而上两种算法,从生产用水(第一产业、第二产业、第三产业)、生活用水、生态用水和污水排放等方面计算了2004—2009年水资源足迹情况,并运用精度较高的拟合函数对其未来几年水资源足迹量、人口数量分别进行了趋势预测,从而得到天津市人均水资源足迹处于下降趋势的结论,并针对这种趋势(2015年将降至617m3),建议从调整产业用水结构、转变虚拟水贸易策略、优化产品消费结构、提高三大产业污水排放达标率、建立水足迹定期监控和预警机制等方面进行动态调节。

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