2.2生态足迹及生态承载力.ppt

,EcologicalFootprintvirtuallyeveryactionwetaketoreduceclimatechangealsoreducesovershoot,andviceversa.,EcologicalOvershoot,EarthOvershootmeansthatwearereducingtheabilityoftheearthslandandwatertosupporthumansandotherspeciesintothefuture.Ifweconquerclimatechangewithoutdepletingothernaturalassets,wecanrebalanceourEarthbudget.,SustainabilityandOvershoot,Theecologicalfootprintofacountrymayexceedtheeco-capacityavailablewithinitsboundaries,resultinginanational“ecologicaldeficit”thecountrymaysufferadegradationofitsresourcestocksandofenvironmentalqualitymorecommonly,thereisanattempttooffsetthenationalovershootbyimportinggoodsandservicesfromothercountriesthismaybeconsideredequivalentto“exporting”theresourcedepletionandenvironmentaldamage,ecologicalfootprintandbio-capacity(ha/person),CountrieswithanEcologicalDeficit,ecologicalfootprintandbio-capacity(ha/person),CountrieswithanEcological“Surplus,ACanadianFootprint,Examiningthefactorscontributingtotheecologicalfootprintofan“average”Canadianhelpstoclarifythedegreetowhichourlifestylechoicesaffecttheenvironment.Thesedata(ha/person)arebasedonastudyoftheCanadianfootprintbyWackernagelandRees(1996).,1988-2007年辽宁省人均生态足迹(EF)、人均生态承载力(EC)、生态赤字(ED)变化趋势,张晶晶,胡晓钧*,杨继松.辽宁省生态足迹动态变化分析，安徽农业科学,2010,38(29):16407-16409,16494,1998-2007年辽宁省人均生态足迹构成,1998-2007年辽宁省万元GDP生态足迹变化趋势,丁祖荣，李静，杭州市生态足迹计算模型与生态足迹分析，中国城市经济,2010年10期,杭州市人均生态足迹构成变化情况,杭州市人均生态承载力构成变化情况,杭州市人均生态赤字,TheCanadianandChinaFootprint,Canada:thecalculatedfootprintofan“average”Canadianis6.4Gha/persontheeco-capacitywithinthebordersofCanadaaffords14.4ha/personthisleavesanecological“surplus”of8.0ha/person,assumingthecurrentpopulationandlifestylearemaintainedGlobal:theglobalaveragefootprintis2.2ha/persontheglobalbio-capacityaffords1.8ha/personandso,thereisanecological“deficit”of0.4ha/personthissuggeststhathumansarelivingbeyondthebio-capacityofEarthanditsbiosphere,China:1.6Gha/person0.8Gha/personthisleavesanecological“deficit”of0.8ha/person,1900,2100,2003,2050,outcome：Weneedfourearthsin2100,“Apersonshouldliveinharmonywithnature”ProverboftheGreekStoicphilosopher,Zeno(ca.336-265BCE),Footprintcalculator,/en/index.php/GFN/page/calculators/.au/ecologi