The Last Empire: China's Pollution Problem Goes Global


Jacques Leslie, Mother Jones
(Excerpts of long article)

    In a mere two and a half decades, China has awakened from Maoist stagnancy to become the world's manufacturer. Among the planet's 193 nations, it is now first in production of coal, steel, cement, and 10 kinds of metal; it produces half the world's cameras and nearly a third of its TVs, and by 2015 may produce the most cars. It boasts factories that can accommodate 200,000 workers, and towns that make 60 percent of the world's buttons, half the world's silk neckties, and half the world's fireworks, respectively.

    China has also become a ravenous consumer. Its appetite for raw materials drives up international commodity prices and shipping rates while its middle class, projected to jump from fewer than 100 million people now to 700 million by 2020, is learning the gratifications of consumerism. China is by a wide margin the leading importer of a cornucopia of commodities, including iron ore, steel, copper, tin, zinc, aluminum, and nickel. It is the world's biggest consumer of coal, refrigerators, grain, cell phones, fertilizer, and television sets. It not only leads the world in coal consumption, with 2.5 billion tons in 2006, but uses more than the next three highest-ranked nations--the United States, Russia, and India--combined. China uses half the world's steel and concrete and will probably construct half the world's new buildings over the next decade. So omnivorous is the Chinese appetite for imports that when the country ran short of scrap metal in early 2004, manhole covers disappeared from cities all over the world--Chicago lost 150 in a month.

    The catch (tricky condition) is that China has become not just the world's manufacturer but also its despoiler, on a scale as monumental as its economic expansion. Chinese ecosystems were already dreadfully compromised before the Communist Party took power in 1949, but Mao managed to accelerate their destruction. With one stroke he launched the "backyard furnace" campaign, in which some 90 million peasants became grassroots steel smelters; to fuel the furnaces, villagers cut down a 10th of China's trees in a few months. The steel ultimately proved unusable.

    With another stroke, Mao perpetrated the "Kill the Four Pests" campaign, inducing the mass slaughter of millions of sparrows and a subsequent explosion in the locust population. The destruction of forests led to erosion and the spread of deserts, and the locust resurgence prompted a collapse of the nation's grain crop. The result was history's greatest famine, in which 30 to 50 million Chinese died.

    Yet the Mao era's ecological devastation pales next to that of China's current industrialization. A fourth of the country is now desert. More than three-fourths of its forests have disappeared. Acid rain falls on a third of China's landmass, tainting soil, water, and food. Excessive use of groundwater has caused land to sink in at least 96 Chinese cities, producing an estimated $12.9 billion in economic losses in Shanghai alone. Each year, uncontrollable underground fires, sometimes triggered by lightning and mining accidents, consume 200 million tons of coal, contributing massively to global warming. A miasma of lead, mercury, sulfur dioxide, and other elements of coal-burning and car exhaust hovers over most Chinese cities; of the world's 20 most polluted cities, 16 are Chinese.

    The government estimates that 400,000 people die prematurely from respiratory illnesses each year, and health care costs for premature death and disability related to air pollution is estimated at up to 4 percent of the country's gross domestic product. Four-fifths of the length of China's rivers are too polluted for fish. Half the population--600 or 700 million people--drinks water contaminated with animal and human waste. Into Asia's longest river, the Yangtze, the nation annually dumps a billion tons of untreated sewage; some scientists fear the river will die within a few years. Drained by cities and factories all over northern China, the Yellow River, whose cataclysmic floods earned it a reputation as the world's most dangerous natural feature, now flows to its mouth feebly, if at all. China generates a third of the world's garbage, most of which goes untreated. Meanwhile, roughly 70 percent of the world's discarded computers and electronic equipment ends up in China, where it is scavenged for usable parts and then abandoned, polluting soil and groundwater with toxic metals.

    Acid rain caused by China's sulfur-dioxide emissions severely damages forests and watersheds in Korea and Japan and impairs air quality in the United States. Every major river system flowing out of China is threatened with one sort of cataclysm or another, including pollution (Amur), damming (Mekong, Salween), diverting (Brahmaputra), and melting of the glacial source (Mekong, Salween, Brahmaputra). The surge in untreated waste and agricultural runoff pouring into the Yellow and China Seas has caused frequent fish die-offs and red-tide outbreaks, and overfishing is endangering many ocean species. The growing Chinese taste for furs and exotic foods and pets is devastating neighboring countries' populations of gazelles, marmots, foxes, wolves, snow leopards, ibexes, turtles, snakes, egrets, and parrots, while its appetite for shark fin soup is causing drastic declines in shark populations throughout the oceans; according to a study published in Science in March 2007, the absence of the oceans' top predators is causing a resurgence of skates and rays, which are in turn destroying scallop fisheries along America's Eastern Seaboard. China's new predilection for sushi is even pricing Japan out of the market for bluefin tuna.

    Seeking oil, timber, gold, copper, cobalt, uranium, and other natural resources, China is building massive roads, bridges, and dams throughout Africa, often disregarding international environmental and social standards. Finally, China overtook the United States as the world's leading emitter of CO2 in 2006, according to the Netherlands Environmental Assessment Agency.

    Half a century ago, the world was much less dusty. Dust, after all, is nothing more than fine particles of soil, in contrast to larger particles known as sand. Many deserts are basins filled with dust and sand held in place by a protective crust of mosses, lichens, and soil bacteria. But modern civilization has exposed the fragility of these crusts as the human population has pushed impoverished migrants and profiteers onto marginal land. As the deserts deteriorate, they expand: Overgrazing of cattle, sheep, and goats causes grasslands to collapse, baring the underlying dust and sand to the mercy of wind. Sand is too heavy to travel more than a few miles, but dust can fly farther than many birds. If a storm system sucks it upward into the troposphere a few miles above the earth, it reaches a conveyor belt of powerful currents that can carry it across oceans and continents.

    China now rivals North Africa as the world's leading producer of border-crossing dust. It has always been generously endowed with deserts--including the Gobi, Asia's largest (which China shares with Mongolia), and the forbidding Taklimakan, the world's largest sand dune desert--which cover more than a fourth of Chinese territory. Until recently, when programs to combat desertification began to make some progress, it lost a Rhode Island-sized parcel of land to desert each year.

    Dust storms that now debilitate Beijing appear in records from as long ago as the 1200s, but they occurred less than once a year on average then; today they come at least 20 times a year. At their worst, the storms drape Beijing in a yellowish cloak that blots out the sun, shuts down air and road traffic, clogs machinery, and makes seeing across the street nearly impossible. Each year, they blow a million tons of dust through Beijing and several tens of millions of tons as far as the western Pacific Ocean, 7,000 miles away. Dust particles are so small--at most a seventh of the diameter of a human hair--that human lungs are defenseless against them. Frequent inhalation can cause coughing, painful breathing, bronchitis, asthma, permanently decreased lung function, and premature death.

    Dust storms also set off ripples of harm. "When dust blows, what you are seeing are nutrients leaving a system--the ability of the soil to support agricultural crops is leaving," says Jayne Belnap, a research ecologist at the U.S. Geological Survey. "So you're setting up a dynamic that causes people to starve or to add more fertilizer to their soil. If they add more fertilizer, then the water becomes eutrophic (1), and it flows into the ocean and screws that up. It's just this huge hunk of 'uh-oh' on a massive scale. And every time we have an 'uh-oh' in a country, it doesn't matter where, it comes back and hits us."

    That became clear in April 2001, when a satellite photograph showed a vast, perfectly coiled cyclonic spiral of white clouds intertwined with brown dust plumes centered over Inner Mongolia. Joseph Prospero, a leading atmospheric researcher at the University of Miami, called it "the most remarkable dust-storm image that I have ever seen." Visibility soon dropped close to zero in Beijing and driving was nearly impossible. Satellites tracked the dust as it moved across eastern China, the Yellow Sea, Korea, the Russian coast from Vladivostok to the Kamchatka Peninsula, the Sea of Japan, and Japan itself. In less than a week, it crossed the Pacific Ocean, and produced thick haze as far east as Denver. High concentrations of dust were found as far away as Maine and Georgia and eventually in the Canary Islands off northwest Africa. Dan Jaffe, an atmospheric scientist at the University of Washington-Bothell, calculated that only a 20th of the storm's dust reached the United States, but that amount, 50,000 metric tons, was two and a half times as much as all U.S. sources typically produce in a day.

    For all that, dust storms are merely the most dramatic example of an array of pollutants that Asian winds deliver to other countries. In 2003, Siberian forest fires covered 73,000 square miles, an area larger than North Dakota, and sent up a smoke plume that drove ozone levels above epa limits in Seattle, 5,000 miles away. The fires are assumed to be the work of arsonists intent on supplying Chinese sawmills with logs. A year later, clouds from Asia carried enough industrial pollutants across the Pacific to produce a sudden spike in measurements of mercury, ozone, and carbon monoxide at a monitoring station at Mt. Bachelor, Oregon. Analysis of the pollutants revealed a chemical signature with what Jaffe calls "a very robust China fingerprint."

    Sulfur dioxide is "China's number one pollution problem," according to Barbara Finamore, director of the Natural Resources Defense Council's China program. Sulfur dioxide causes respiratory illness, aggravates asthma and heart disease, and turns soil, lakes, streams, and oceans acidic. It is the key ingredient in the premature deaths of more than 400,000 Chinese each year from air pollution and has led to the outbreak among Chinese in their 30s of chronic lung diseases usually associated with old people. By 2005, China's sulfur-dioxide emissions were nearly double those of the United States--and they are estimated to have grown by 14 percent since. As a result, acid rain now plagues a third of China, much of Japan and Korea, and even the Pacific Ocean.

    Coal has also made China the world's leading producer of human-caused mercury emissions, accounting for 30 percent of the global total and rising. A 2004 peer-reviewed study found that up to 36 percent of man-made mercury emissions settling on America originated in Asia. Mercury impairs neurological development in fetuses, infants, and children, and is highly toxic.

    The most insidious product of China's coal consumption is carbon dioxide, which, along with CO2 generated by the rest of the world, is destroying China's ecosystems: Already-arid northern China is drying out, the wet south is seeing more and more deluges and floods, and the Himalayan glaciers that feed China's major rivers are melting; according to a June 2007 Greenpeace report, 80 percent could disappear by 2035. Such a development would jeopardize hundreds of millions of people who depend on the rivers for subsistence and livelihood.

(1)               
eu·troph·ic (y¶ träf´ik, -tr³´fik)
adj.
designating or of a body of water, esp. a lake or pond, rich in nutrients which cause excessive growth of aquatic plants, esp. algae: the resulting bacteria consume nearly all the oxygen, esp. during warm weather, choking the fish, etc.