The public submitted 1,463 pollution reports through the 12369 telephone hotline last year, and most were related to air pollution, the Ministry of Environmental Protection said on Tuesday.

Five provinces in central and eastern regions - Henan, Shandong, Jiangsu, Hubei and Guangdong accounted for the highest number of reports, with 43 percent of the total nationwide.

Henan province ranked No 1, the ministry reported.