要保育polar bear有何困難?(超需要)

WWF polar bear expert Geoff York as he tracks polar bear populations in Hudson Bay, Canada. Early indications are that the formation of ice will be very late this year – a situation that would decrease critical hunting time for polar bears and dramatically increase the amount of time the bears have to fast on shore.

With 20-25,000 polar bears living in the wild, the species is not currently endangered, but its future is far from certain. In 1973, Canada, the United States, Denmark, Norway and the former U.S.S.R. signed the International Agreement on the Conservation of Polar Bears and their Habitat. This agreement restricts the hunting of polar bears and directs each nation to protect their habitats, but it does not protect the bears against the biggest man-made threat to their survival: climate change. If current warming trends continue unabated, scientists believe that polar bears will be vulnerable to extinction within the next century. WWF provides funding to field research by the world's foremost experts on polar bears to find out how climate change will affect the long-term status of polar bears.The actions we take include providing support for and communication of key science that will help us build resilience; engaging with indigenous/local communities to reduce human-wildlife conflicts and work towards sustainable development opportunities; and drafting and spearheading management solutions that address the major threats of climate change and industrialization of the Arctic