Resume of Liaoning Chaoyang giant Haiyan
Biodiversity has declined sharply: there are a lot of biological resources in the polar regions, such as whales in the Antarctic, polar bears in the Arctic, seals, walruses and sea lions. In recent years, driven by commercial interests, whales in the Antarctic region have been killed indiscriminately and have fallen into crisis. Melting glaciers: Due to the increase of population and the continuous expansion of the scale of human production activities, greenhouse gases such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), chlorofluorocarbons (CFCs), carbon tetrachloride (CCl4) and carbon monoxide (CO) are released into the atmosphere, resulting in changes in atmospheric composition. The air quality is affected and the climate is getting warmer. Due to global warming, it will have various effects on the world, and higher temperatures can melt polar glaciers. According to the latest observation and analysis of several scientific research groups, in the next 100 years, human activities will have an increasing impact on the earth's climate and will melt the vast polar ice sheet on this planet. Destruction of the ozone layer: Freon, carbon dioxide and other gases emitted by human activities accelerate the destruction of the ozone layer. Most of these gases that destroy the ozone layer are emitted by human beings in their production and life, especially in the northern hemisphere where industrialized countries are concentrated. Every day, a large number of gases such as industrial waste gas, automobile exhaust gas and freon produced by refrigerants are emitted. Animals, plants and soils in polar research stations: human activities in Antarctica and other parts of the world have caused regional problems such as soil and vegetation pollution in Antarctica, wildlife interference, introduction of exotic species and invasion of bacterial diseases. The petroleum fuel and burning garbage used in the research station also pollute the Antarctic air, and the lead discharged into the Antarctic atmosphere by human activities is almost 20% of the total lead in the Antarctic atmosphere every year. Suspended pollutants in the atmosphere have posed a serious threat to land plants in Antarctica. Wild animals that live in Antarctica all the year round are also disturbed by human activities. Giant petrels, Adele penguins and other Antarctic wild animals sensitive to human activities have been greatly reduced due to human invasion. As human food, meat, poultry, vegetables, flowers and plants, captive animals and so on. Even humans themselves may be carriers and disseminators of germs, posing a direct and potential threat to the original life system in Antarctica.