Data Source: Ministry of Ecology and Environment, websites of provincial/municipal ecological environment departments(bureaus)
In 2019, the statistical methodology for mobile source emissions changed, adopting the survey methods and emission factors from the Second National Census of Pollution Sources for mobile sources. The main changes include updates to mobile source activity levels (such as average annual mileage and operating time) and emission factors, as well as the addition of hydrocarbon (HC) evaporative emissions from motor vehicles.
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