世卫组织发布报告:空气污染每年致700多万人过早死亡

2015-10-23 佚名 国际在线

世界卫生组织22日在日内瓦发布的一份报告强调,目前迫切需要采取措施减少黑碳、臭氧和甲烷等短期气候污染物的排放,因为这些排放物不仅会影响到气候变化,而且每年还导致700多万人因空气污染过早死亡。这份报告题为《减缓短期气候污染物排放 降低人类健康风险》,由世界卫生组织与联合国环境规划署所属机构“气候和清洁空气联盟”共同完成。报告共140页,通过大量事实数据和分析,说明了短期空气污染物对健康的影响,并就



世界卫生组织22日在日内瓦发布的一份报告强调,目前迫切需要采取措施减少黑碳、臭氧和甲烷等短期气候污染物的排放,因为这些排放物不仅会影响到气候变化,而且每年还导致700多万人因空气污染过早死亡。

这份报告题为《减缓短期气候污染物排放 降低人类健康风险》,由世界卫生组织与联合国环境规划署所属机构“气候和清洁空气联盟”共同完成。报告共140页,通过大量事实数据和分析,说明了短期空气污染物对健康的影响,并就减少此类污染物排放、改善人类健康提出具体建议。

短期空气污染物是指在大气中存留时间较短的一些有害颗粒物,包括黑碳、臭氧、甲烷等。其中,黑碳在空气中存留时间最短,只有几天,而甲烷可以达到12年至15年。这些排放物与二氧化碳一样,不仅导致全球气候变暖,更为有害的是,它们每年还导致700多万人因空气污染而过早死亡。最新分析显示,如果从现在起全球联合采取减排措施,那么到2030年,每年可以拯救350万人的生命。世卫组织公共卫生和环境司负责人玛丽亚·内拉说:“我们今天展现给大家的,是短期气候污染物排放与健康的关系,它们是直接导致心血管和呼吸系统疾病的主要元凶,包括心脏病、肺部疾病、呼吸道感染和肺癌。”

这份报告特别关注了黑碳对大气环境和健康的影响。说起黑碳,很多人可能并不十分了解,但说到空气中的颗粒物,人们都不陌生,黑碳就是空气污染物中最主要的颗粒物之一。黑碳主要是由于化石燃料和生物质燃料未得到充分燃烧所致,如柴油、燃煤、砖窑、垃圾焚烧、农作物废料焚烧,以及家用燃煤等,都会排放大量黑碳。报告显示,中国北方地区空气颗粒物的主要来源分布为:24%来源于粉尘,工业、交通、家用燃料各占约15%,另有30%为不明来源。

世卫组织公共卫生和环境司负责人玛丽亚·内拉指出,与二氧化碳在大气中能够存留数百年甚至数千年相比,这些短期污染物只存留几天或十几年,因此采取应对措施也能够在短期内就见到效果,“因此好的、积极的一面就是,当你开始解决这些问题时,就可以非常迅速地减少排放,同时提高空气质量并减缓近期气候变化的速度。”

这份报告提出了二十多项切实可行的应对措施,旨在缓解短期气候污染物的排放,其中的4项重要措施包括:一是制订更为严格的汽车尾气排放标准;二是在政策及投资层面做出努力,优先发展公共交通和火车,并建立安全的行人和自行车交通网络。这些措施可以产生多重好处:包括减少空气和噪音污染,增加运动量从而降低缺乏运动带来的健康风险,减少道路交通伤害的发生等;三是提供更为清洁、高效的家用炉灶和燃料替代品。目前全球有28亿低收入家庭依赖木材、粪便和其它固体燃料取暖做饭,是最大的空气污染源。

报告还把改变膳食结构作为减排的第四项重要措施,即鼓励“多吃菜、少吃肉”。世卫组织公共卫生和环境司协调员卡洛斯·多拉认为,这不仅有助于减少饲养生畜导致的甲烷排放量,而且还有益于人们的健康,“这就是改变我们的膳食结构,减少肉类及肉制品的摄入,更多食用富含营养的蔬菜,促进人类的健康。因为这意味着少盐、低脂肪,更少摄入有害健康的肉食成份,减少心脏疾病和中风的发生。”

世卫组织已经将防止与空气污染有关疾病和死亡作为全球健康的新目标,并确定到2030年“大幅度减少危险化学品及空气、水和土壤的污染,以及污染导致的死亡和患病人数”。联合国环境署“气候和清洁空气联盟”负责人莫林·瓦尔德斯强调:“我们越快采取减排行动,就能够越快缓解在气候变化和人类健康方面的压力。”

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    2015-12-07 cmn

    逃离

    0

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    2015-10-24 slicer

    怪不得呼吸内科那么火

    0

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印度尼西亚苏门答腊岛及加里曼丹岛的山火灾情近日开始恶化,虽然有大量民众和军警参与灭火,然而至今仍然未能扑灭林火。印度尼西亚官员表示,光是在苏门答腊南部,因为霾害而有呼吸道问题的民众就有2.2万人。不仅印尼,其他南亚国家也因此遭殃。南亚国家新加坡以环境整洁优美著称,但是每年也总是有那么几周,会受到其他国家林火或者民众燃烧芭蕉林的影响,雾霾成为了该国全年中最难过的日子。不仅航班延误、部分体

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