全球气候变暖对生态的影响相关英文以及文献资料!11.doc

全球气候变暖对生态的影响相关英文以及文献资料 Global warming is one of the most serious environmental issues that we face today.Scientific assessments indicate that if the human-created greenhouse gas emissions are left unchecked,the excessive warming is very likely to distort climate patterns and cause significant impacts on both natural and human systems.As the two largest emitters of greenhouse gases in todays world, both United States and China face great challenges of global warming and climate change.Using quantitative data from multiple sources including surveys,newspapers,and government documents,this study examines major dimensions,concerns and policy developments surrounding the issue of global warming and climate change in the United States and China. Implications of the study are discussed in the conclusion. Global warming will cause temperatures with the north, which led to corresponding changes in atmospheric motion, the global precipitation will subsequently change. In general, the low-latitude regions, the existing precipitation will increase with the rain, snowfall in winter at high latitudes will increase, while the mid-latitudes in summer precipitation will be reduced. For most of the arid and semi-arid regions, increased precipitation is beneficial. As for the reduction in precipitation, such as central North America, northwest China inland, the summer rainfall will decrease because of increased drought and water even more tense. It is estimated considering the water in the thermal expansion, due to increased precipitation led to the Antarc Start at 59 ）This is Bill White with the VOA Special English ENVIRONMENT REPORT.?A new United Nations report says poor countries would (1)suffer the most from the effects of the warming of the Earth. The report says (2)shortages of food and water would affect some of the poorest parts of Africa, Asia and Latin America. These areas also would suffer an increase in diseases. The report says small island nations are most at (3)risk. H