... ©PaoloRosselli–CourtesyofUrbanAge,LondonSchoolofEconomics,www.urban-age.net40Megacities and Climate Change41Chapter4 Land use and urban planninghectaresoffarmlandweretransformedintotowns and citiesduring1972–1992 and intheUSAaround400,000hectaresoffarmlandarelosttourbanisationeveryyear.3Clearlythistrendisunsustainable and thedesiretosatiatehumanwants and lifestylesinthisway and atthisrateisfarexceedingthewiseuseofnaturalresources.Ifwearetomanagelandusedevelopmentmoresustainably,itisessentialthatwebetterunderstandthekeydriversforlandusechange.Reasonsunderlyingchangesinland-useareoftenover-simplified and asaconsequenceprovideaflawedbasisforenvironmental and developmentpolicy.Itisnotalwayspopulationorpovertyalonethatdriveslandusechangesbutoftenhowacommunityrespondstoeconomicopportunities and howsuchresponsesaremediatedbyvariousinstitutionalfactors.Somedriversoperateondifferentspatial and temporalscales, and thismakestheirassessment and managementmorepractically and politicallycomplex.ForexampleinacountrylikeSouthAfrica,wherethemajorityofthepopulationhavelongbeendeprivedofaccess and rightstoland,changingconceptsofsocialjusticehavebecomeastrongdriverwhichcouldhavesignificantimplicationsforfuturechangesinlanduse.However,whileopportunities and constraintsfornewlandusearecreatedbylocalaswellasnationalmarkets and policies,itisoftenglobalforceswhichbecomethemaindeterminantsastheyamplifyorattenuatelocalfactors.Landdegradationproblemsaredirectlyrelatedtolandusepractices,especiallywherecityboundarieshaveextendedintourbansprawltoaccommodatenewhousingdevelopment,industry, and intensiveagriculturalpractices.Thereforeacallforinnovativelandusemanagement and spatialplanningsystemsisparamounttoreversetheunwise and unsustainableuseoflandresources.Bharati ... 2000, Mexico City demanded 17% of the country’s total energy fuels output. ©NickHarrison46Megacities and Climate Change47Chapter4 Land use and urban planningWaste and climate changearecloselylinked.InIndia,60%oftotaldisposablewasteisorganic,whichcanrapidlydecompose, and releasemethanegasduringtheprocess.Moreover,itisrecognisedthatrecyclingresultsinreducingtheneedforrawmaterials.Incasessuchasaluminum,recyclingplaysanimportantrolebyreducingtheamountofenergyrequiredforitsproduction and alsoeventuallyreducegreenhousegasemissions.6Wastepickers,whoarenotrecognisedasformalstakeholdersbytherecyclingsector,undertakebothrecycling and extensiverepair/reuse,makingtheirinclusioninanywastemanagementplanessential.Someestimatessuggestthatapproximately1%oftheurbanpopulationinthedevelopingworldisengagedinrecycling.Manyofthemarepoorminorities,migratingfromtheruralregions,whereecological and economiccollapseisunderway.Therefore,theirinclusioninsuchplansisessentialbothfromanenvironmental and povertyalleviationpointofview.Leadership ... SummaryIn2007,theCityofTorontoadoptedits Climate ChangeActionPlanwhichincludesatargetedreductioningreenhousegasemissionsof80%by2050.Inadoptingtheplan,theCityCouncilalsocalledforthedevelopmentofacomprehensive climate changeadaptationstrategy and isoneofthefirstcitiesintheworldtodoso.In2008,theCityofTorontoreleased‘AheadoftheStorm–PreparingTorontofor Climate Change’,adocumentdesignedtoengagestakeholdersinunderstandingwhatcanbedonetopreparefor climate changeinordertominimizeitsimpactonToronto’senvironment,health and economy.Toronto’sleadingeffortstoaddressadapationalongsidemitigationwillprovideausefulcasestudyforothercitiesaroundtheworld.DetailTorontoCityCouncilhascommittedoveronebilliondollarsoverthenextfiveyearstofundprojectsthatwillhelpreducegreenhousegasemissions.Itscomprehensivestrategytorespondto climate change,knownasthe Climate Change,CleanAir and SustainableEnergyActionPlan’,focusesonactivitiesthatreducegreenhousegasemissions and helppreparefor climate change(mitigation and adaptation).Torontounderstandsthatmitigation and adaptationstrategiesareoftencomplementary and shouldbedevelopedintandeminordertobestutiliseresources and achievemaximumbenefit.Case...