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shu zi
Pages: 40
Year: Issue:  8
Journal: Environmental Education

Keyword:  化学需氧量产粮大县吉林省气象局北京晨报商品粮基地旱情监测预报预警人民网农安北屯;
Abstract: <正>4项近日,环境保护部对北京市上半年主要污染物总量减排进行了核定。全市4项主要污染物二氧化硫、氮氧化物、化学需氧量和氨氮排放量上半年分别比去年同期减少5.43%、7.59%、2.22%和5.95%,近百个减排项目建成投运并较好发挥了减排效益,实现了"时间过半、任务过半",各主要污染物排放量保持
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