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From Wikipedia, the free encyclopedia
The environment of China (Chinese: 中国的环境) comprises diverse biotas, climates, and geologies. Rapid industrialization, population growth, and lax environmental oversight have caused many environmental issues and large-scale pollution.[1]
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The geology of China (or the geological structure of the People's Republic of China) consists of three Precambrian cratons surrounded by a number of orogenic belts. The modern tectonic environment is dominated by the continued collision of India with the rest of Asia starting 40–50 million years ago. This has formed the Himalayas and continues to deform most of China.[2] China has vast mineral reserves,[3] a significant earthquake risk in its western regions and rare isolated active volcanoes throughout the country.[4]
Many geological concepts were discovered very early in China's history. However, it was not until the adoption of European natural science in the late 19th century that geology became a science in China.[5]
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China's vast and diverse landscape is home to a profound variety and abundance of wildlife. As of one of 17 megadiverse countries in the world,[6] China has, according to one measure, 7,516 species of vertebrates including 4,936 fish, 1,269 bird, 562 mammal, 403 reptile and 346 amphibian species.[7] In terms of the number of species, China ranks third in the world in mammals,[8] eighth in birds,[9] seventh in reptiles[10] and seventh in amphibians.[11]
Many species of animals are endemic to China, including the country's most famous wildlife species, the giant panda. In all, about one-sixth of mammal species and two-thirds of amphibian species in China are endemic to the country.[8][11]
Wildlife in China share habitat with and bear acute pressure from the world's largest population of humans. At least 840 species are threatened, vulnerable or in danger of local extinction in China, due mainly to human activity such as habitat destruction, pollution and poaching for food, fur and ingredients for traditional Chinese medicine.[12] Endangered wildlife is protected by law, and as of 2005, the country has over 2,349 nature reserves, covering a total area of 149.95 million hectares (578,960 square miles), about 15 percent of China's total land area.[13]
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Owing to tremendous differences in latitude, longitude, and altitude, the climate of China is extremely diverse, ranging from tropical in the far south to subarctic in the far north and alpine in the higher elevations of the Tibetan Plateau. Monsoon winds, caused by differences in the heat-absorbing capacity of the continent and the ocean, dominate the climate. During the summer, the East Asian Monsoon carries warm and moist air from the south and delivers the vast majority of the annual precipitation in much of the country. Conversely, the Siberian anticyclone dominates during winter, bringing cold and comparatively dry conditions. The advance and retreat of the monsoons account in large degree for the timing of the rainy season throughout the country. Although most of the country lies in the temperate belt, its climatic patterns are complex.
The northern extremities of both Heilongjiang and Inner Mongolia have a subarctic climate; in contrast, most of Hainan Island and parts of the extreme southern fringes of Yunnan have a tropical climate. Temperature differences in winter are considerable, but in summer the variance is considerably less. For example, Mohe County, Heilongjiang has a 24-hour average temperature in January approaching −30 °C (−22 °F), while the corresponding figure in July exceeds 18 °C (64 °F). By contrast, most of Hainan has a January mean in excess of 17 °C (63 °F), while the July mean there is generally above 28 °C (82 °F).
Precipitation is almost invariably concentrated in the warmer months, though annual totals range from less than 20 millimetres (0.8 in) in northwestern Qinghai and the Turpan Depression of Xinjiang to easily exceeding 2,000 millimetres (79 in) in Guangdong, Guangxi, and Hainan. Only in some pockets of the Dzungaria region of Xinjiang is the conspicuous seasonal variation in precipitation that defines Chinese (and, to a large extent, East Asian) climate absent.
Annual sunshine duration ranges from less than 1,100 hours in parts of Sichuan and Chongqing to over 3,400 hours in northwestern Qinghai. Seasonal patterns in sunshine vary considerably by region, but overall, the north and the Tibetan Plateau are sunnier than the south of the country.
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Climate change is having major effects on the Chinese economy, society and the environment.[19][20] China is the world's largest emitter of carbon dioxide, through an energy infrastructure heavily focused on coal. China's per capita emissions are greater than the world and European Union averages but less than Australia, Canada, and the U.S.[21] China recorded its hottest year on record in 2023, with an average temperature of 10.7 °C.[22] On the basis of cumulative CO2 emissions measured from 1751 through to 2017, China is responsible for 13% of global and about half of the United States' cumulative emissions.[23][24]
A burgeoning construction industry and industrial manufacturing contribute heavily to carbon emissions. It has also been noted that higher-income countries have outsourced emissions-intensive industries to China.[25][26]
China is suffering from the negative effects of global warming in agriculture, forestry and water resources, and is expected to continue to see increased impacts. China's government is taking some measures to increase renewable energy, and other decarbonization efforts, vowing to hit peak emissions before 2030 and be carbon neutral by 2060 by adopting "more vigorous policies and measures."[27] China's GHG emissions will likely peak in 2025 and return to 2022 levels by 2030. However, such pathway will still lead to a 3 degrees Celsius temperature rise.[28]This is a list of the nationally designated protected areas of China. There are many forms of protected areas in China. Based on their relative importance, each type of protected area can be further graded into two to three levels (national, provincial and prefectural/county level). Nevertheless, the highest rank for "pocket nature preserve" (social and mass-based), "no-hunting area", "no-fishing area", "no-logging area", "wild medicinal material resources conservation area", "crop germplasm resources conservation area", "forest tree germplasm resources conservation area" or "source water protection area" is practically restricted to provincial level. The local government at county level is also responsible for the delimitation and declaration of "basic farmland protection area" and "basic grassland".
Take note that many protected areas in China have multiple official designations, and the statutory boundaries of these multi-designated PAs may be identical or may vary one from the other. For instance, the boundaries of Huangshan NSHA coincide with those of the Huangshan NGP, whereas Fujian province's Wuyi Mountains NNR, NSHA and NFP are adjacent to each other. In Heilongjiang, 27,642.14 hectares out of 115,340.27 hectares of Huzhong NFP are intersected with the experiment zone of Huzhong NNR.
Rapid industrialization, population growth, and lax environmental oversight have caused many environmental issues, such as large-scale pollution in China.[29] As of 2013, Beijing, which lies in a topographic bowl, has significant industry, and heats with coal, is subject to air inversions resulting in extremely high levels of pollution in winter months.[30]
In January 2013, fine airborne particulates that pose the largest health risks, rose as high as 993 micrograms per cubic meter in Beijing, compared with World Health Organization guidelines of no more than 25. The World Bank estimates that 16 of the world's most-polluted cities are located in China.[31]
According to Jared Diamond, the six main categories of environmental problems of China are: air pollution, water problems, soil problems, habitat destruction, biodiversity loss and mega projects.[32] Diamond also states that, "China is noted for the frequency, number, extent, and damage of its natural disasters".[32]
Many of the Chinese citizens started to wonder if air pollution is the cause of the increase of lung cancer. This question began to rise because the citizens in China must constantly wear face masks to avoid breathing in the hazardous particles from their polluted skies. Some experts agree that it is the reason, but others say there isn't enough evidence. Wang Ning, deputy director of the Beijing Office for Prevention and Control, says he has seen a rise in a certain cancer called adenicarcinoma, which is a mucus that is seen as a side effect from pollution. China's lung cancer rate is 32% of the entire world's lung cancer patients. Meanwhile, as lung cancer increases, gastric, esophageal, and cervical cancer have all decreased in China.[33]
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