全球变暖英文课件.ppt

Global Warming,1,1,2,3,4,Background,Reason,Problem,Solution,目录CONTENT,2,The climatehasbeengettingsteadilywarmerandwarmerinrecentyears.,Background,1,3,The average global temperaturerises significantly after entering the eighties,Global warming is coming !,4,There are many reasons of the global warming, but it mainly caused by human activities,Reason,2,5,Initial causes of temperature changes,Aerosols and soot,Greenhouse gases,Variations in Earths orbit,Solar activity,6,Greenhouse gases,CO2,7,Aerosols and soot,8,Solar activity,9,Variations in Earths orbit,10,Global warming causes all sorts of problems,Problem,3,11,12,Extreme,weather,13,Sea,Level,Rise,19th centuryrise at the rate of 0.10 to 0.15 per one hundred meters,Ice, islands, city disappear,Bring disaster to the coastal areas,14,Terrestrial（陆地） ecosystems,threaten coral reefs, fisheries, protected species, and other natural resources of value to society,Effect the flight of the migratory birds,affect particular ecosystems reduced diversity of ecosystems,ocean ecosystem,1,2,3,Ecological systems,Air,15,effects,Long-term,Abrupt climate changea response from the Earths crustthe rapid release of methane and carbon dioxide from permafrostinjury and loss of lifea large risk to global and regional food securityEconomic and Infrastructure loss,16,Low carbon life,Solution,4,17,Mitigation,Adaptation,Climate engineering,Mitigation of climate reduce greenhouse gas emissions, or enhance the capacity of carbon sinks to absorb GHGs from the atmosphere,Local adaptation effortsEnhancing adaptive capacityAgricultural productionMore spending on irrigationWeather controlDamming glacial lakesGeoengineeringMigrationInsurance,solar radiation management and carbon dioxide removal.,18,谢谢大家观看,Thanks For Watching,LOGO,19,