Changes in the circulation of the atmosphere and the ocean are natural factors that contribute to global climate change. The increase of carbon dioxide in the atmosphere leads to global climate change and has become a global hot issue. The so-called CO2 fertilization effect means that the increase in CO2 concentration contributes to plant growth, and the yield of some food crops will increase. The impact of rising CO2 concentration on the yield of food crops will directly affect the global food supply security and human adaptation strategies in the context of climate change. However, due to the warming of the climate and changes in precipitation and water cycle, meteorological disasters frequently occur in many areas, such as increased droughts and floods, affecting food production. Climate is the main factor that determines the distribution of biomes. Climate change can change the adaptability of different species in a region and change the competitiveness of different species within the ecosystem. Animals and plants in the natural world, especially plant communities, may have been mismanaged due to their inability to adapt to global warming. Past climate changes (such as glacial periods) have caused many species to disappear. Future climate will make certain species disappear in some areas. While some species will benefit from warming, their habitats may increase, competitors and Natural enemies may also be reduced. For example, oranges. In the past 1970s, its northernmost boundary line was on the Huangshan line. Xuancheng City had also tried to plant it. However, in the winter, a heavy snowfall caused the trees to freeze. But now our campus orange trees are all growing well. In another example, the alligator only lives in narrow areas such as Xuancheng, Jixian and Nanling. If the northern boundary line moves north, the Chinese alligator may become extinct naturally. This is from a part of our province. In terms of the whole country, China regards the 0°C isotherm in winter as the northern subtropical zone. At present, the boundary line is in the Qinling-Huaihe area of China. The study found that the increase in temperature will move this boundary north to the north of the Yellow River, and winter temperatures in Xuzhou and Zhengzhou will be similar to those in Hangzhou and Wuhan.
Climate change has been a topic of discussion for many years now, and it has affected the whole world. With global warming increasing at a fast rate, we have experienced hotter and longer summers. While global warming is a natural occurring phenomenon, the current climate we are experiencing