China's average temperature may rise by 2.8 degrees Celsius by 2030 and its 
crop production could tumble by 10 percent as global warming throws the climate 
into disarray, a senior Chinese climate official said on Thursday. 
The leading China Meteorological Administration official told a government 
meeting in Beijing that global warming is likely to lift China's average 
temperature -- compared to annual averages for 1961-1990 -- by 1.3 to 2.1 
degrees Celsius by 2020, and by 1.5 to 2.8 degrees by 2030, the Xinhua News 
Agency reported. 
And these rises threaten to overturn patterns of rainfall and slash crop 
output, said the official, whom Xinhua did not name. 
"Our country's precipitation distribution over time and space will become 
even more unbalanced," Xinhua said, citing the official, who said the changes 
would lead to less rain and the accelerated spread of arid land in northern 
China and around the Yangtze River, the country's largest river. 
But in other areas, climate changes may lead to more severe and frequent 
rainstorms that "will present a massive threat to our country's disaster 
prevention system", the report said. 
The official said disturbed weather patterns could cut China's crop 
production by 5 to 10 percent by 2030, with wheat, rice and corn suffering the 
steepest falls. 
"Under the impact of cimate change, instability in our country's agricultural 
production will increase and turbulence in production volumes will grow," the 
report said. 
Scientists believe industrial pollution and human consumption are raising 
global temperatures by producing greenhouses gases that trap heat in the 
atmosphere, especially carbon dioxide from burning coal and other fossil fuels. 
The United States accounts for nearly a quarter -- 24 percent -- of all 
emissions of carbon dioxide, the main greenhouse gas. 
Chinese Vice Premier Hui Liangyu told the Beijing meeting on Thursday that 
China needed to upgrade its weather tracking and climate research to address 
impending change. 
"We need to observe changes in weather and climate, and the question of 
global warming, from a high strategic vantage point," he said, according to the 
China Meteorological Administration website (www.cma.gov.cn).