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研究:城市森林可降低“热岛效应” 减少污染

2017-08-26 09:21:00   央广网

【环球网综合报道】据《日本时报》8月24日报道,一项新的研究表明,城市中的树木帮助减少空气污染、吸收碳还能在热浪中为人们提供阴凉,因此每年都会为大型城市在医疗保健,能源成本和环境保护上的开支节省约5亿美元(约合人民币33亿元)。

据纽约州立大学的一项研究显示,预计到2030年时,每10个人中就会有1人居住在人口超过1000万的大型城市中,而城市中的绿化树木将会使这些城市更加健康。该研究的第一作者,纽约州立大学环境科学与林业学院的西奥多安德尼(Theodore Endreny)说,树木对人类福祉和生物多样性非常重要,还是我们生活质量的基础。

研究表明,城市森林可以帮助降低城市“热岛效应”,城市中的温度往往要比乡村地区更高,导致空气污染和水污染的恶化,使酷热难耐的工人缺少生产积极性。而植物通过蒸腾作用来冷却周围的空气,树叶可以阻隔太阳的热量,还能吸收噪音。研究表明,在温度特别高的时候,由于温度的升高,树木变化频繁,可以帮助建筑物降温,从而降低风扇和空调的运行成本。

研究人员主要关注了全球几个特大型城市,包括莫斯科和布宜诺斯艾利斯,他们发现,如果在人行道、广场和停车场等地区种植更多的树木,城市森林为城市带来的益处将会翻倍。安德尼说,如果我们把重点放在城市外的地区,那么树木的最大受益者就会被忽视,因为全球有超过7亿的人口居住在近数十个大型城市中。(实习编译:王九力 审稿:田瑞哲)            

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