人类活动对气候变化的影响(英文).docx

What role has human activity played in causing climate change and what can be done to slow down its effects?Climate change is a natural phenomenon, however, more and more unreasonable human activity is speeding up climate change. At the same time, nature seems to be punishing humans. In recent years, more and more natural disasters have begun to appear because of climate change, such as tornadoes, flooding and increase of desert areas. Today, climate change has entered a vicious circle and we must do everything we can to slow it down. In this essay, I will show that human activity has played an extremely important role in climate change. Firstly, this essay will describe three main human activities that are speeding up climate change, i.e. greenhouse gas emissions, population growth and particulate matter emissions. After each problem I will show some appropriate measures which have been taken to slow down the effects of human activity.Firstly, this essay will analyse greenhouse gas emissions. “At the turn of this century scientists suggested that the carbon dioxide added to the atmosphere from burning fossil fuels could influence the global climate”(Carter, 2007, p70). Now, in order to the social development can be fast, human use a large number of fossil fuels. Large amount of greenhouse gas discharged everyday because of fuel burning. Many factories release harmful gases which can damage the atmosphere around the clock, such as sulfur dioxide and chlorine. Thousands of cars release carbon dioxide every minute in the world. These harmful gases and carbon dioxide can lead to global warming, and break the rhythm of climate change.In recent years, the increasing greenhouse gases emissions has attracted the attention of the government and scientist. At the same time, climate change research spending has been increased in many countries, for example, “many billions of dollars have been expended by major climate research groups on honing complex GCMs of the ocean and atmosphere”(Carter, 2007, p70). Climate scientists try to use the computer to simulate climate change and the influence of greenhouse gases. Now, many countries have set up a department to monitor the emissions of greenhouse gases. Many countries have begun to eliminate or improve cars and factories which can not reach the emissions standards. It is a good way to reduce the greenhouse gases emissions.The second reason lead to climate change is the growing population. As we know, the population growth very fast. Growing population need open up more living space and more material sources, therefore, destroy the natural balance (Causes of Climate changes, p3). Because of population growth, people need more resources to maintain life, for example, people need more wood for construction, and need for more land to live. Therefore, humans cut down many trees and destroyed a lot of forest. A large number of forest disappeared, desertification become more and more serious, hot and cold cycle become unbalanced, the difference in temperature between day and night will become larger. Temperature cycle damaged will speed up the climate change.There are some solutions to these problems. Climate change begin to faster, human should take some measures with climate change. In some countries, there have some laws to limit the population, and some governments make regulations about the supply of energy under the constraints of minimizing climate change (Bolin, 2007, p234). For instance, some laws limit the people in the country can not have more than two children. I think if we want to slow down the climate change, most of people should pay enough attention to the environment protect. However, in fact, many people do not care about climate change. Therefore, governments should try all ways to make people kwon the importance of climate change. Through these useful laws and regulations, the climate change will be slowed down.Another reason for climate change is particulate matter emissions. Human activities are more and more intense. Many factories in the production process bring out a lot of dust. “These sunlight-absorbing particles probably decrease albedo over land, causing a warming; they also change stability of lower atmosphere” (Kellogg and Schware, 1981, p33). Now, some industrial cities polluted very serious. Because of the large number of particulate matter emissions, the sky turned into gray, more and more dust into the air. These particles reduce the dissemination of heat and the flow of air. In the end, it will speed up the global warming.There are some solutions to these problems. Now, the science is very developed, people can use some new technology to improve the chemical industry emission standards, and as far as possible to control particulate matter caused by heat radiation (Kellogg and Schware, 1981, p33). By this way, the emission of particulate matter will be reduced. In fact, there have some factories have used the new filtration te。