China News Service, July 21st. Comprehensive foreign media reported that on the 20th local time, the latest research published in the magazine "Nature-Climate Change" showed that climate change has greatly damaged the living environment of polar bears unless humans take more measures. Deal with climate change, otherwise this species will almost disappear within 80 years.
On December 9, 2019, the ecological impact of global warming increased. More than 60 polar bears appeared near the village of Rerkepi in the Chukotka Autonomous Region in northern Russia. Due to the thinning of sea ice due to global warming, polar bears have to break into human villages for food.
According to reports, researchers pointed out that due to climate warming, the Arctic sea ice area has shrunk, making polar bears forced to travel to coastal areas. There, it is difficult for polar bears to find food and feed their cubs, which will greatly reduce the number of polar bears.
Researchers also claim that the weight loss of polar bears also reduces their chances of passing the Arctic winter without food.
The chief scientist of the International Polar Bear Center, Steven Amstrup, said: "Polar bears face a longer fasting period before the ice is frozen and can go back to search for food."
The study concluded that, under current trends, 12 of the 13 polar bear subgroups analyzed will drastically decrease in number within 80 years.
Amstrup said that before 2100, climate change will severely affect the continuation of polar bears, and may even become subgroups of the Queen Elizabeth Islands in Canada. It is difficult to give birth to cubs in other regions.
The report pointed out that this study is expected to increase the average temperature of the earth's surface to 3.3 degrees Celsius higher than the benchmark before industrialization. But even if humans can control global warming within 2.4 degrees, it will only allow polar bears to survive for a while.
According to the report, the threat facing polar bears is not the rise in temperature itself, but the inability of the predator at the top of the food chain to adapt to the rapidly changing environment, "their habitat is melting."