Chinese scientists have long warned that rising temperatures on the Qinghai-Tibet plateau will melt glaciers, dry up major Chinese rivers and trigger more droughts, sandstorms and desertification.

The Tibet Meteorological Bureau said the temperature rise was most obvious in the west of the region. Tibet, with its glaciers and high altitude, has been regarded as sensitive to the effects of global warming.

Currently, China's average temperature is rising at 0.4 degree Celsius every 100 years, while a report by the Intergovernmental Panel on Climate Change showed the average surface temperature of the globe had risen 0.74 degree Celsius in the past 100 years, Xinhua said.

China is rapidly overtaking the United States to become the world's top emitter of greenhouse gases. It is under rising international pressure to accept mandatory caps on carbon dioxide emissions from its factories and vehicles.