Helena Joyce
China's air pollution is a pressing issue that has severe environmental, societal, and economic implications, not just for China but also for other countries. The primary causes of air pollution in China include the burning of fossil fuels, industrial emissions, vehicle emissions, and coal-burning heating sources. These factors have led to a significant increase in greenhouse gas emissions and dangerous levels of fine particulate matter (PM2.5) in the air, which has caused a range of health issues, including respiratory and cardiovascular diseases, and premature deaths. While China has made some progress in reducing air pollution, it continues to be a major public health concern, affecting the quality of life and economies of its citizens.
| Characteristics | Values |
|---|---|
| Causes of air pollution in China | Coal-burning, industrial emissions, vehicle emissions, biomass burning, waste incineration, soil dust, desertification, fossil fuels, lax environmental oversight, cement production, fuel combustion |
| Effect on China | Cancer is the leading cause of death, 2 million deaths per year, 500 million without safe drinking water, 1% of city dwellers breathe safe air, lower birth rates, lung cancer rates up 60% in a decade, shortened lifespans |
| Effect on other countries | Air pollution reaches South Korea, Japan, and the US, causing deaths, emergency room visits, and costing South Korea $2.6 billion per year |
| Progress | China has made significant progress in reducing air pollution since 2014, with 338 cities enjoying good air quality 79% of the time in 2018 |
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Industrial pollution
China's rapid industrialization has resulted in excessive greenhouse gas emissions, with industrial pollution being a major contributor to the country's poor air quality. China is the world's largest emitter of anthropogenic air pollutants, with coal-burning playing a significant role in this regard. The burning of fossil fuels, particularly coal, has led to the emission of fine particulate matter (PM2.5) that poses severe health risks to Chinese citizens and those in neighbouring countries.
The immense urban growth in Chinese cities has substantially increased the demand for consumer goods, vehicles, and energy, resulting in increased burning of fossil fuels and the formation of smog. This smog is a complex mixture of soil dust, coal combustion byproducts, biomass burning emissions, traffic pollution, waste incineration emissions, industrial pollution, and secondary inorganic aerosols. The high concentration of PM2.5 in this smog has been linked to over a million premature deaths in China in 2010 alone, with lung cancer rates rising over 60% in the past decade.
Industrial emissions from factories producing goods for foreign markets have also contributed significantly to China's air pollution problem. The manufacturing and export of goods, driven by international demand, have resulted in the release of pollutants that are carried across the Pacific Ocean to the Western United States by global winds. This has made China's air pollution an international issue, impacting not only neighbouring Asian countries but also regions farther away.
To address the issue of industrial pollution, Chinese authorities have implemented various measures, including the war against pollution initiative. This has involved relocating factories to other provinces, converting coal furnaces to natural gas, and enforcing mandatory factory closures and vehicle bans on days with heavy air pollution. Since 2014, China has also implemented a nationwide air pollution reduction program, resulting in a decrease in transboundary air pollution and associated health impacts in neighbouring countries.
While China has made progress in reducing industrial pollution, it continues to face challenges due to its rapid industrialization and population growth. The country's economic development has led to a surge in vehicle ownership, contributing to the high levels of air pollution in major cities. Additionally, the burning of coal for power generation and heating during cold months remains a persistent source of industrial pollution, affecting both China and neighbouring nations.
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Fossil fuels
In northern China, air pollution from the burning of fossil fuels is causing people to die, on average, 5.5 years sooner than they would have otherwise. Fine particles in the air, caused by the burning of fossil fuels, penetrate deep into the lungs and cardiovascular system, causing diseases including stroke, heart disease, lung cancer, chronic obstructive pulmonary diseases, and respiratory infections.
Chinese communities rely on coal-powered power plants, and in the colder months, coal-burning heating sources. These fuel sources produce fine particulate matter (PM2.5) that rises into the air and affects people's health when levels are high. The combustion of coal also releases secondary pollutants such as SO2 and NOX, which react to form dangerously small new particles.
Beijing, China's capital, has been waging a ""war against pollution"" due to the opaque smog that shrouds the city. The number of motor vehicles on Beijing's roads has doubled to 3.3 million, with nearly 1200 added each day, and emissions from these vehicles contribute to nearly 70% of the city's air pollution. However, the Chinese government has taken steps to address air pollution, such as converting coal furnaces in tens of thousands of homes to natural gas and relocating factories to other provinces.
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Population growth
China's rapid industrialization and economic growth have resulted in a massive increase in air pollution, which has had severe social, economic, and political repercussions. One of the key factors contributing to this issue is the country's overreliance on coal as a cheap energy source. While the percentage of energy consumption from coal has decreased over the years, it still accounted for 57.7% of China's energy consumption in 2019. The large-scale combustion of coal has led to a significant increase in harmful emissions, such as carbon dioxide, sulfur dioxide, nitrogen oxide, and particulate matter (PM2.5 and PM10). These fine particles released into the air can infiltrate the lungs and cardiovascular system, causing various health issues, including respiratory and cardiovascular diseases, stroke, heart disease, and lung cancer.
The impact of population growth on air pollution in China is significant. The country's rapid population expansion, coupled with economic development, has heightened the demand for consumer goods, vehicles, and energy. This surge in demand has further exacerbated the burning of fossil fuels, leading to increased smog and air pollution levels. The dense concentration of vehicles in large cities, such as Beijing and Shanghai, has been identified as a major contributor to air pollution, with vehicle emissions accounting for a substantial portion of the overall air pollution in these metropolitan areas.
Moreover, the population's reliance on solid fuels and polluting technologies for cooking and heating further aggravates the problem. Household air pollution caused by the use of polluting fuels and inefficient cooking methods contributes significantly to the overall air pollution levels in China. This is particularly evident in the northern regions, where the Huai River Policy provided homes and offices with free coal for winter heating during the central planning period from 1950 to 1980. As a result, coal consumption and production skyrocketed, intensifying the emission of harmful pollutants.
The consequences of air pollution in China are dire, with approximately 2 million deaths attributed to air pollution annually. This includes deaths caused by both ambient outdoor air pollution and household air pollution. The high levels of air pollution have also impacted neighbouring countries, such as South Korea, leading to increased mortality and health issues, especially among infants and the elderly. China has recognized the severity of this issue and has implemented various measures to combat air pollution, including the nationwide air pollution reduction program introduced in 2014, which has shown some promising results.
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Coal-burning
China's rapid industrialization and economic growth have resulted in excessive greenhouse gas emissions, with coal-burning being a significant contributor to air pollution. China's air pollution has severe health, societal, and economic impacts, affecting not only China but also its neighbouring countries and the West Coast of the United States.
In Beijing, coal combustion was identified as one of the six main sources of smog, along with soil dust, biomass burning, traffic emissions, industrial pollution, and waste incineration. The opaque smog shrouding Beijing and other Chinese cities has been linked to over a million premature deaths in 2010 alone, according to the New York Times. It has also led to cancelled flights and a tarnished image for Chinese cities, with Beijing experiencing a 10% drop in tourism in 2013.
To combat coal-burning pollution, Beijing has implemented emergency measures such as mandatory factory closures and bans on motor vehicles during heavy air pollution days. City officials have also converted coal furnaces in tens of thousands of homes to natural gas and relocated factories to other provinces. Since 2014, China has rolled out a nationwide air pollution reduction program, resulting in a decrease in transboundary air pollution to neighbouring countries like South Korea. While China has made progress in reducing air pollution, it remains a significant issue, impacting the health and quality of life of millions of Chinese citizens.
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Vehicle emissions
China has been the world's largest vehicle market since 2009, and vehicle emissions have become a significant source of air pollution in its cities. The country's rapid economic development has resulted in a stalemate between the booming vehicle industry and delayed vehicle emission control policies. This has led to a significant deterioration in air quality, with vehicle emissions identified as one of the most important contributors to air pollution in most Chinese cities.
The consumption of large amounts of fossil fuels by vehicles has been a primary driver of air pollution in China. Researchers have identified carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (HC), volatile organic compounds (VOCs), and particulate matter (PM) as air pollutants directly or indirectly associated with motor vehicle emissions. These emissions have severe health impacts, exposing people to fine particles that penetrate the lungs and cardiovascular system, causing diseases such as stroke, heart disease, lung cancer, and respiratory infections.
China's most advanced industrial zones, including Beijing-Tianjin-Hebei (BTH), the Yangtze River Delta (YRD), and Pearl River Delta (PRD), face immense pressure to mitigate vehicle emissions and improve regional air quality. The high population density in these regions exacerbates the impact of vehicle emissions on public health.
To address this issue, China has implemented various strategies and plans to reduce on-road vehicular pollution. For example, a fuel tax was introduced in 2009, and pilot subsidies for new energy vehicles (NEVs) were adopted in some regions in 2010. In 2013, the Air Pollution Prevention and Control Action Plan (APPCAP) promoted the use of substitute fuel vehicles in bus fleets and limited the number of vehicles. More recently, in 2022, the Hainan Carbon Peak Implementation Plan was launched, aiming for a complete ban on the sale of fuel-powered vehicles by 2030.
While these measures are a step in the right direction, it is important to acknowledge that the impact of these policies may vary. For instance, promoting NEVs may lead to increased CO2 emissions due to coal-related electric power production. Additionally, the success of these policies in reducing air pollution in China may depend on various factors, including the implementation of effective vehicle emission control technologies and the development of sustainable practices in the vehicle industry.
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Frequently asked questions
The main causes of air pollution in China are industrial coal-burning, soil dust, biomass burning, traffic, waste incineration emissions, and secondary inorganic aerosols.
Air pollution in China has been linked to over a million premature deaths in 2010 alone. It has also been linked to lower birth rates and higher adult mortality from respiratory-related diseases. Lung cancer rates have risen over 60% in the past decade.
The Chinese government has been waging a war against pollution, which has included emergency measures such as mandatory factory closures and bans on motor vehicles entering cities on days with heavy air pollution. The government has also passed the Heavy Air Pollution Contingency Plan, which consists of four warning levels based on air pollution levels.
