Global warming has caused drastic climate change: rising sea levels have made polar bears unable to survive, dry weather has led to forest fires, and increased carbon dioxide concentrations have also reduced cereal yields.
Australia, NSW (Merxwire) - According to the United Nations, global warming has directly reduced crop and livestock production efficiency, and cereal prices are forecast to rise to 23% by 2050. British researchers have also shown the link between global warming and forest fires. Polar bears are also threatened with survival due to rising temperatures.
Australian Forest Fire
Forest fires occur every year in Australia, but as the climate has become warmer in recent years, the fires have become more widespread and last longer. The Australian fire that broke out in September 2019 severely damaged New South Wales and Victoria, causing about one fifth of the country's forest area to be burned and 500 million animals burned to death.
Researchers have found that the climate models underestimated the rising temperatures observed in southeastern Australia and were therefore unable to determine the number of climate change risks. But observations show that extreme weather has increased the likelihood of a fire in Australia by 30%.
Prof Richard Betts from the Met Office Hadley Centre said we are "seeing a sign of what would be normal conditions under a future warming world of 3C". British researchers said that current research data show that climate change affects the frequency and severity of fires. The combination of high temperature, low humidity, low rainfall and high winds increases the risk of fire.
Polar bears cannot survive
Climate warming has severely affected nature, causing Ice fields and glaciers to melt, so sea levels continue to rise at a rate of 3 millimeters or more each year. According to observations from the Potsdam Institute for Climate Impact Research, sea levels will rise by 1.5 to 3.5 meters by 2200.
Animals living in the Arctic Circle were first affected by temperature and sea-level rise. The number of polar bears and the living environment have always been the focus of attention. With the Arctic Circle less prone to freezing and the Ice field melting earlier, the situation for polar bears has become more difficult.
Global warming has reduced the Arctic ice by 40%, resulting in changes in polar bear habitat and reduced food. As a result, they are thin, hungry, and attack weaker peers. These phenomena have often occurred. Polar bears hunt baby cubs, which is a natural warning to humans.
Reduced cereal production
Global warming and extreme weather affect cereal production. Droughts in Thailand, warmer winters in Europe, and wetter United States, these changes are not only worrying, but also reduce the amount of cereals harvested. Wheat, cotton, and corn have all reduced production and prices have risen.
The climate in Europe and the United States is affected, so wheat acreage has decreased, and prices have risen by 17 to 18% from May 2019 to the present. At the same time, North Africa is also facing drought issues, and crop output may be reduced. Grain is an important food for human beings. If wheat production continues to decrease, we will face a food shortage crisis.
According to the United Nations, global warming has led to frequent droughts and other natural disasters everywhere, which directly affects the global food harvest and affects the efficiency of livestock production. Cereal prices are forecast to rise to 23% by 2050.
Global warming has increased the incidence of natural disasters, and it has damaged forests, ice fields, animal habitats, and cereal planting areas, all of which are warnings to the earth. Human beings need more ways to protect the natural environment and help the planet operate sustainably.
More information please visit: https://news.un.org/en/news/topic/climate-change