“The plan is aimed at dealing with regional air pollution—such as acid rain and smog—which have become increasingly obvious in China in recent years and caused a severe threat to people’s health,” Zhang Lijun, vice-minister of environmental protection, said in an interview on Monday.

　　“The air quality in a city affects the regions nearby because pollutants (污染物) Can travel through the atmosphere,” said Chai Fahe, vice-director of Chinese Research Academy of Environmental Sciences.

　　“So efforts to reduce air pollution in a single city, targeting a certain pollutant will not be enough,” Chai said.

　　Zhang said, “The country’s major industrial districts—the Yangtze River Delta, Pearl River Delta and the Beijing-Tianjin-Hebei region—have recorded more than 100 misty days annually in recent years.”

　　These three regions, home to at least 200 million people, occupy only 6. 3 percent of the country’s area but consume 40 percent of the country’s coal and produce half of its steel, according to official figures.

　　Studies also show that the visibility (能见度) in eastern regions of China has dropped by 7 to 15 km compared to that in the early 1960s, as a result of air pollution.

　　Liaoning province, the Shandong Peninsula, Wuhan in Hubei province and its surrounding area, the Changsha-Zhuzhou-Xiangtan region in Hunan province, the Chengdu-Chongqing region, and the western coast of the Taiwan Straits are also listed as areas to carry out such regional air pollution control programs, according to the plan.

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