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澳华媒:人口不断增长 墨尔本十年后或陷用水危机
2017-07-24 14:58:38 中国青年网
中新网7月24日电 澳洲新快网援引澳洲广播公司刊文称,一份新研究显示,澳大利亚墨尔本的水资源或在十年后开始出现枯竭情况,墨尔本供水商已开始为可能出现的水危机做准备。
文章摘编如下:
由于人口不断增长,墨尔本耗水量快速上升,再加上气候变化问题,墨尔本水务局(Melbourne Water)根据这些情况分析了干旱情况加剧的可能性。
分析报告发现,最坏的情况是,墨尔本需水量到2028年可能会超过供给量;而最好的情况是,墨尔本50年内将面临水危机。
报告显示,墨尔本人口到2065年将增加一倍,到那时,社区将建成更多公寓和更小的街区。
这些变化或给水资源利用带来积极影响,如用水量随着房屋的变小而减少,促使房屋建设倾向于装有更高效的设备等。然而这也会带来不利影响,街区和花园面积的变小,会让城市绿化面积缩小,从而使城市热度增加。
硬化路面增多和建筑物面积的增加,会导致雨水下渗面积缩小,引起雨水径流加大,这在一定程度上,会增加洪水风险和对河流小溪的破坏。
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