China's growing political power and influence on the world economy has many people in North America concerned, polling suggests.
Substantial numbers of people in Canada and the US worry that China's emergence is a threat to world peace and worry about China's impact on the economy in their own countries.
Two-thirds of Americans and half of Canadians say that "China is a serious threat" to jobs in their own countries, according to polling done by Ipsos-Reid.
Just over half of Americans, 54 percent, and nearly half of Canadians say they are concerned about the level of Chinese investment in their countries.
Tensions have been increasing between a number of countries and China recently over its trade surplus, surging textile imports and problems with product piracy.
"It's clear that Americans are concerned about the emergence of China as a world power," said Darrell Bricker, Ipsos' president of public affairs for North American countries.
"Canadians, on the other hand, see it as much an opportunity as a threat."
Bricker said Canadians view increased trade with China as a way of balancing Canada's current reliance on the US.
Majorities in both Canada (61 percent) and the US (71 percent) said that they did not believe an increased global role for China would go on to prompt democratic reforms.
As China gains economic and political clout internationally, a sizable group of people in both Canada (42 percent) and the US (31 percent) said that they concurred with the statement that "China will soon dominate the world."
While most people in both countries see China's economic growth as an opportunity, they do not think that Beijing's record of human-rights abuses should be rewarded by pursuing expanded trade with it.
Seven in 10 Canadians said they thought expanding Canada's trade with China would be a good thing because it would reduce dependence on US goods.
The survey of 1,000 adults was conducted from April 5 to April 7 in Canada and the US for the Canada Institute of the Woodrow Wilson International Center.