The region, which covers much of China's remote northwest and includes the Himalayas, has been identified as one of the country's "ecological security barriers" and is a vital "water tower" regulating flows to eastern, central and southern Asia.

A recent report by the UN's Intergovernmental Panel on Climate Change said the plateau region was facing rising flood hazards and more frequent extreme heat and rain.

Government researchers found that temperature and rainfall increases had made the region greener, more fertile and more "beautiful", expanding lakes and rivers and improving the habitats of gazelles, antelopes and donkeys.

"But in fact, a high price will be paid for this 'beauty', with significant warming and humidification exacerbating the occurrence of extreme weather and climate events," the China Meteorological Administration (CMA) said in a summary of the expedition's findings published on Tuesday.

Over the long term, warmer temperatures are likely to further destabilise weather patterns and water flows and encourage encroachment by invasive lowland species, putting native animals under stress.

Temperatures in the region have risen 0.35 degrees Celsius (0.6 degrees Fahrenheit) per decade since 1960, twice the global average. Annual rainfall has increased 7.9mm (0.31 inch) per decade since 1960, reaching 539.6mm a year over the 2016-2020 period, 12.7 percent higher than the 1961-1990 average.

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