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天津市水资源足迹灾变预测

, PP. 63-67

Keywords: 水资源足迹,灾变预测,虚拟水贸易,天津市

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Abstract:

为实现缺水区域水资源灾害提前预测,从水足迹视角(考虑蓝水、绿水和灰水),构建了区域水资源足迹灾变预测模型,并以天津市为例,综合运用自上而下和自下而上两种算法,按照生产用水(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4个方面对2000-2009年天津市水资源足迹进行了计算,获得了天津市近10年的水足迹数据(每年介于60亿~80亿m3之间),并以此为基础数据进行了精度较高(年均相对误差为0.0128)的灾变预测,得出了天津市将在2011年和2015年左右发生水资源足迹下灾变,所提预测方法可为缺水地区水资源灾变预测和预防提供参考。

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