Brian Barton
China's pollution problem is a well-known issue that has gained global attention. The country's rapid industrialization, population growth, and economic development have led to various forms of pollution, including air, land, and water pollution, which pose significant risks to the environment and public health. China's pollution levels have been so severe that they have triggered a war against pollution, with the government implementing various measures to combat the issue. While some progress has been made, China remains one of the most polluted countries in the world, and its pollution levels continue to affect the health and well-being of its citizens.
| Characteristics | Values |
|---|---|
| Population | 1.4 billion |
| Land Area | 9.6 million square kilometres |
| Air Pollution Ranking | 11th dirtiest country in the world in 2019 |
| US AQI Figure in 2019 | 110 |
| PM2.5 Concentration in 2019 | 42.1 µg/m³ |
| Cleanest City in 2019 | Linzhi, Tibet |
| Cleanest City in 2019 AQI Figure | 27 |
| Dirtiest City in 2019 | Hotan, Xinjiang |
| Dirtiest City in 2019 AQI Figure | 179 |
| Number of Vehicles in Beijing | 3.3 million |
| Average Life Years Lost Due to Pollution | 2.3-2.5 years |
| Total Life Years Lost if Current Pollution Levels Persist | 3.6 billion years |
| Total Land Area Affected by Soil Pollution | 38,610 square miles (100,000 km2) |
| Land Area Irrigated by Contaminated Water | 31.5 million square miles (21,670 km2) |
| Land Area Covered or Destroyed by Solid Waste | 2 million square miles (1,300 km2) |
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What You'll Learn
China's air pollution crisis
Major contributors to air pollution in China include industry, transportation, coal power plants, and household solid fuel usage. The burning of fossil fuels, in particular, has led to the formation of smog, which poses a direct threat to the health of Chinese citizens. Fine particles in the air, resulting from pollution, can penetrate deep into the lungs and cardiovascular system, causing various diseases, including stroke, heart disease, lung cancer, and respiratory infections. According to the Chinese Ministry of Health, industrial pollution has made cancer the leading cause of death in the country. It is estimated that air pollution is responsible for about 2 million deaths in China annually, with ambient air pollution alone causing more than 1 million deaths.
The impact of air pollution in China extends beyond its borders. Sulfur dioxide and nitrogen oxides from China fall as acid rain on cities like Seoul, South Korea, and Tokyo. Additionally, the pollution crisis has affected water resources, with severe water shortages and pollution affecting both agricultural land and drinking water sources. According to reports, 500 million people in China lack access to safe and clean drinking water. The water pollution issue is further exacerbated by the improper disposal of electronic waste, with China producing 2.3 million tons of e-waste in 2011, a number that is expected to grow with economic development.
Recognizing the severity of the situation, China declared a “war against pollution” in 2014. Since then, the country has made significant progress in reducing pollution levels. By 2022, China's fine particulate air pollution (PM2.5) had decreased by 41% compared to 2013 levels. This has led to an increase in the average life expectancy of Chinese citizens. However, despite these improvements, China's pollution levels still exceed the World Health Organization's (WHO) guideline of 5 µg/m³, and the country could gain an additional 216.7 million total life years if national standards were met.
While China continues to make strides in the right direction, the air pollution crisis remains a critical issue that demands sustained efforts and commitment to ensure a healthier future for its citizens and the global community.
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The war on pollution
China's pollution problem has been well-documented over the years, with the country facing an unprecedented environmental health crisis. The situation has been so severe that it has posed a major long-term burden on the Chinese public and an acute political challenge to the ruling Communist Party. The pollution in China has been attributed to various factors, including industrialisation, population growth, economic development, and the lack of proper waste disposal.
In 2014, China declared a "war against pollution", recognising the serious threat it posed to its people and the environment. Since then, the country has made significant strides in reducing pollution levels, with a particular focus on controlling PM2.5, the most harmful type of particulate matter. According to a University of Chicago study, the decline in global pollution levels from 2013 to 2021 can be entirely attributed to China's success in steeply reducing pollution. During this period, China's pollution levels fell by 41-42%, a remarkable achievement.
The anti-pollution measures taken by the Chinese government have been comprehensive. They have included limiting the number of cars on the roads in major cities, banning new coal plants in the most polluted areas, cutting emissions or closing existing plants, and reducing high-polluting industrial activities such as iron and steel manufacturing. These efforts have not gone unnoticed, with Beijing recording its best monthly air quality in 2021 since records began in 2013.
However, despite these improvements, China remains the world's 13th most polluted country, and the war on pollution is far from over. While China's particulate pollution levels meet its national standards, they still exceed the World Health Organization's (WHO) guidelines. The rebound in PM2.5 levels in 2023, after a decade of decline, is a concerning development. Additionally, the government needs to address the increasing trend of other pollutants, such as ozone (O3), which exacerbates respiratory conditions and contributes to mortality.
The progress made in China's war on pollution demonstrates that change is possible through sustained efforts and commitment. However, continued action is necessary to ensure that the gains made are not lost and that the health and well-being of China's people and environment are protected.
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Soil pollution and food safety
China's rapid industrialization and urbanization since the 1970s have resulted in widespread soil pollution, which has contaminated food crops and posed a significant threat to public health and food safety. Official estimates suggest that China produces 12 million tons of heavy-metal-contaminated grain annually, causing economic losses of over $3.2 billion.
The overuse of chemical fertilizers, pesticides, and manure has been identified as a major contributor to soil pollution and food safety issues in China. The low utilization efficiency of these agricultural inputs has led to high input and low output, with excessive chemical residues remaining in the soil and crops. According to the Ministry of Agriculture of China, as of 2015, the utilization rate of fertilizers and pesticides, the recovery rate of plastic film, and the effective treatment rate of livestock waste were all below expectations.
Heavy metal contamination, particularly of cropland, has emerged as a critical concern. Approximately 10.18% of China's arable land is polluted by heavy metals, resulting in the contamination of 13.86% of grain production. Cadmium (Cd) and lead (Pb) have been detected in excessive amounts in rice and vegetables, exceeding the recommended guidelines set by the WHO and FAO. The long-term consumption of food contaminated with heavy metals can lead to serious health issues such as diarrhea, abortion, hepatitis, and typhoid.
The Chinese government has recognized the severity of the situation and has implemented a series of targeted policies to address the food security threat posed by industrial pollution and the overuse of toxic agricultural inputs. However, the effectiveness of these policies remains to be seen, and the challenge of balancing economic development with environmental sustainability persists.
In conclusion, soil pollution in China, exacerbated by rapid industrialization and urbanization, has severely compromised food safety and public health. The presence of heavy metals in cropland and the overuse of chemical inputs have contaminated grain production and led to significant economic and health consequences. Addressing these issues is crucial for safeguarding the well-being of China's population and ensuring sustainable agricultural practices.
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Plastic waste and pollution
China is the world's largest producer and exporter of single-use and virgin plastics. In 2021, China produced 80.1 million tons of plastic, and in 2020, the country produced about 60 million tons of plastic waste, of which only 16 million tons were recycled. On average, only about 17% of the plastic used in China is recycled. China's large population, which is growing by 0.5% annually, contributes to the high levels of plastic waste in the country.
China has been working to address plastic pollution through regulatory frameworks and bans on certain plastic products. In 2008, China banned all supermarkets, department stores, and shops from giving out free plastic bags, and prohibited the production, sale, and use of ultra-thin plastic bags. In 2019, China banned non-degradable single-use plastic straws. In 2020, China introduced the "opinions on further strengthening the control of plastic pollution", transitioning to a source-segregation collection system. China has also banned the importation of electronic waste and plastic waste.
Despite these efforts, China is the largest source of mismanaged plastic waste and is the biggest offender of ocean plastic pollution. The Yangtze River has been identified as one of the biggest sources of global plastic pollution, although more recent studies have suggested that the Philippines is responsible for a larger proportion of plastic inputs in oceans.
China's plastic waste management policies have had a positive impact on recycling rates, and the country is focusing on economic policies and incentives to reduce plastic production and waste. However, there is still a lack of regulatory attention on the upstream part of the plastic lifecycle, and plastic production continues to increase in China.
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Water pollution
The pollution of China's water sources is a result of several factors, including industrial waste, agricultural runoff, and sewage discharge. In 2011, it was reported that Luliang Chemical Industry in Yunnan province had disposed of 5,000 tonnes of chemical waste near a river used as a drinking water source, with local residents claiming that over 140,000 tonnes had accumulated over 22 years. A government study in 2013 found that 90% of China's cities have contaminated groundwater, with similar reports from 2011 and 2002.
China's coastal waters are also severely polluted, with the size of the affected areas increasing by 50% in 2012. One study found that 8.3 billion tons of sewage were released into Guangdong Province's coastal waters in 2006, a 60% increase over five years. China's economic growth, industrialization, and urbanization have also put pressure on water resources, with inadequate investment in water treatment infrastructure. This has resulted in widespread water pollution and seasonal water shortages that affect millions of people.
The impact of water pollution in China is not limited to human health but also extends to the environment. Pollution-induced algae blooms have affected China's lakes, including Lake Tai and Lake Chao, the country's third and fifth largest freshwater lakes, in 2007. The blooms made the water undrinkable and produced a terrible stench, affecting the residents of Wuxi who rely on Lake Tai for their water supply. Additionally, canals and rivers are often covered in floating trash, mainly plastic containers, and deformities in fish have been observed, potentially due to paint chemicals.
Efforts have been made to address water pollution in China, such as Greenpeace's Detox campaign in 2011, which aimed to publicize the relationship between multinational companies, their suppliers, and water pollution. The Chinese government has also taken steps to improve water quality, with the Ministry of Environment ordering provinces to meet their five-year water quality targets in 2015. However, nearly half of the country missed these targets for the period 2011-2015, indicating that more action is needed.
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Frequently asked questions
Particulate pollution is among the five greatest threats to human health in China, reducing the average life expectancy by 2.3 years. If pollution levels are brought down to the levels prescribed by the World Health Organization (WHO), people in China could see their average life expectancy increase by 2 years.
Industry, transportation, coal power plants, and household solid fuel usage are major contributors to air pollution in China. The agricultural sector is also a significant source of waste, and Chinese farms generate more pollution than factories.
Air pollution is responsible for about 2 million deaths in China per year. It leads to diseases including stroke, heart disease, lung cancer, chronic obstructive pulmonary diseases, and respiratory infections.
China launched a "war against pollution" in 2014, focusing on controlling PM2.5 particulate matter. Since then, the country has limited the number of cars on roads in major cities, banned new coal plants in the most polluted areas, cut emissions or closed existing plants, and reduced high-polluting industrial activity.
While China has made progress in reducing pollution, it remains the world's 13th most polluted country. Critics argue that China's economic policies, such as the Belt and Road Initiative (BRI), lack clear environmental guidelines, safety standards, and worker protections, leading to projects that displace local populations, negatively affect water quality, and pollute land.
