Climate Could Cut Output of Chinese Factories
Andrea Estrada, 2 Dec 17
       

(Credit: Guang Niu/Getty Images)

Climate change will dramatically lower output for the Chinese manufacturing sector, research shows.

To date, most empirical evidence on climate change impacts has focused on the agricultural sector.

In a new paper published in the Journal of Environmental Economics and Management, researchers use detailed production data from a half-million Chinese manufacturing plants in the period 1998-2007. They predict that by the middle of the 21st century, if no additional adaptations occur, climate change will reduce Chinese manufacturing output annually by 12 percent—equivalent to a loss of nearly $40 billion in 2007 dollars.


It is well documented that when it’s hot, people work less productively.


With the Chinese manufacturing sector producing 32 percent of national gross domestic product (GDP), this effect is equivalent to a 4 percent drop in overall Chinese GDP annually. Further, given that China’s manufacturing sector supplies 12 percent of global imports, the worldwide economic consequences may be substantial.

“Previous work has largely focused on how climate change may affect economic activity by lowering the productivity of workers,” says coauthor Kyle Meng, an assistant professor of environmental economics in the University of California, Santa Barbara’s Bren School of Environmental Science & Management and its economics department. “It is well documented that when it’s hot, people work less productively.”

The new paper, written with Olivier Deschenes, a professor of economics UC Santa Barbara, Peng Zhang of the Hong Kong Polytechnic University, and Junjie Zhang of Duke Kunshan University in China, points to the effects of temperature on the productivity of capital as well. That is, increasing temperatures not only make workers less productive, they also make machines operate less well.

“In one particularly striking result, we separately examine temperature sensitivity between low- and high-tech industries in China,” Deschenes says. High-tech industries include those that produce medical supplies, aerospace equipment, and computer equipment. “We typically think of these sectors as being capital intensive with indoor production facilities that tend to operate with air conditioning,” Deschenes continues. “We find that these industries are just as sensitive to extreme temperature as low-tech industries.”

According to Meng, the results suggest that if we are to reduce climate losses on manufacturing output, adaptation measures should not focus solely on reducing the sensitivity of workers to extreme heat, but also that of factory machines.

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