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1、GreenhouseWhat is greenhouse?How does it influence us?What are the factors?What has been done to settle it?Our opinions and suggestions第1页/共17页What is greenhouse?DefinitionThe so-called greenhouse effect is short-wave solar radiation through the atmosphere into the ground,and warming the ground afte
2、r the length of radiation being released in the atmosphere by absorbing carbon dioxide and other substances,thereby creating the effect of atmospheric warming.第2页/共17页Greenhouse gas:Carbon dioxide is not the only greenhouse gas.Other gases,such as methane(CH4)and nitrous(氮的、硝的）oxide(NO),are even str
3、onger infrared（红外线的）absorbers.第3页/共17页 The natural greenhouse effect is crucial（决定性的）for maintaining the proper temperature needed to sustain(支持、支撑）life on Earth.BUT:THE GLOBAL WARMING!第4页/共17页Global warming第5页/共17页 Temperature A worldwide greenhouse effect might produce a dangerously warmer world.S
4、ince the late 19th century,the average global temperature has increased between 0.3 C and 0.6 C.Internationally,2010 was the hottest year on record since official weather records first started being kept by the British in about 1860.第6页/共17页 Estimates（估计）of global average temperatures have projected
5、 an increase of as much as 5C before the year 2100.Such a rise in global temperature would produce new patterns and extreme drought and rainfall,which would seriously disrupt food production.This could potentially cripple the North American corn belt,which produces much of the worlds grain,leading t
6、o much higher food prices,and even less food for the Third World than they already have.第7页/共17页 The other serious worry is that rising sea levels from the melting of the polar ice could severely flood many countries.A rise in sea levels of one metre,which many experts are predicting by the year 210
7、0(and some as soon as 2030),would flood 15 percent of Egypt（埃及）,and 12 percent of Bangladesh(孟加拉国).The Maldives(马尔代夫）in the Indian Ocean would almost completely disappear.返回第8页/共17页What are the factors?The mankind burning coal,oil,natural gas and tree and produce a great deal of carbon dioxide and m
8、ethane so many years,those gases get into the atmosphere make carbon circulate a disequilibrium and have changed the energy of the Earth biosphere conversion form.And finally become global warming.第9页/共17页What had we done第10页/共17页What has been done to settle it?Kyoto Protocol京都议定书（英文：Kyoto Protocol，
9、又译京都协议书、京都条约；全称联合国气候变化框架公约的京都议定书）是联合国气候变化框架公约（United Nations Framework Convention on Climate Change，UNFCCC）的补充条款。是1997年12月在日本京都由联合国气候变化框架公约参加国三次会议制定的。其目标是“将大气中的温室气体含量稳定在一个适当的水平，进而防止剧烈的气候改变对人类造成伤害”。第11页/共17页AOSIS(小岛国联盟):Most of the countries which would suffer mostly from a rise in sea levels are the
10、 poor island states,so the islands in the Caribbean（加勒比海的）,South Pacific（太平洋的）,Mediterranean（地中海的）and Indian Ocean have formed the Alliance（联盟）of Small Island States,AOSIS,so they have a louder voice in internatioanl politics and can make the richer developed world listen to their problems.第12页/共17页
11、返回第13页/共17页What should we do:*Take the public transportation*Dont set off the firecrackers（爆竹）*Use solar energy*Afforestation（造林）第14页/共17页*Try to be a volunteers*Support environmental protection commonwealth*Simple life!*第15页/共17页As long as we try to change,we will succeed!Thank you！第16页/共17页感谢您的观看！第17页/共17页