世界人口問題問題 - 英文版課件

ProblemofworldpopulationTheworld'smostpopulouscountry---ChinaAttheendof2014,China'stotalpopulationof13.6782people(excludingtheHongkongSpecialAdministrativeRegion,theMacaoSpecialAdministrativeRegionandtheTaiwanregion),anincreaseof710overthepreviousyear.Amongthem,themalepopulationof70079people,thefemalepopulationof64703people,themalepopulationis5376morethanwomen,theurbanpopulationof74916people,ruralpopulationof61866people.China'spopulationhasaccountedformorethan30%oftheworld'spopulation,andChina'spopulationaccountsforabout19%oftheworld'spopulation,and12%oftheworld'spopulation.ThepopulationofChinais30timesmorethantwocountriesinWesternEurope,aboutAfricaandLatinAmerica.IfallthepeopleinChinaarestandinginarow,theycanrotatearoundtheearth'sequatormorethan40.WorldpopulationPopulationdensitydistributionmapofEurope

Europe'stotalpopulationof7.9(1990,includingtheAsianpartofKazakhstan,Kyrgyzstan,Uzbekistan,Turkmenistan,Tajikistan,notincludingtheEuropeanpartofTurkey),theworld'stotalpopulationof16.7%,afterAsia,rankingsecondinallcontinents.Averagepopulationdensityisthefirstplaceinallcontinents,andtheaveragepopulationdensityis1.2timeshigherthantheworldaverage.india

Indiapopulationiscurrentlyabout1210193422people,andChinaisnowanaverageof1600births,deathsfrom900to1000orso,thepopulationgrewbylessthan700millionayear,thenaturalpopulationgrowthrateof5/1000,India'spopulationgrowthrateofalmostthreetimesthatofus,ayearcanincreasemorethan1000millionpeople.Bytheendof2014,Chinais13.678billionpopulation,Indiaby12.5billioncount,inviewofChina'sfuturetenyearspopulationgrowthrateislowerandlower,evenfullyopensecondyearalsoincreasednot100millionlivebirths,andtheincreasingpopulationofIndia,tenyearsispossible.secondadultpopulationTheimpactofpopulationgrowth1theimpactofpopulationgrowthonnaturalresourcesOftheearth,SheungShui,atotalof13.8millionKM3,which96.53%aboveintothesaltwaterofthesea,thetotalamountoftheearth'sfreshwatersupplyfor0.35billionKM3,accountedforonly2.53%ofthetotalglobalwater.Threequartersofthemwereinthesouth,theArcticicecapsandglaciers.Therefore,humanscanreadilyusefreshwateraccountedforabout20%ofallthefreshwaterinthe.Anddirectfromtheriverandlakewateraccountedforonly0.5%ofallfreshwater,canfordirecthumanuseandeasytoobtainfreshwaterresourcesareverylimited.Becausethegrowthandlivingstandardsofthepopulationisincreasingdaybyday,someareasinsomecountries,thedemandforwaterhasreachedthelimitsofsupplycapacityintheregion.2foodissues,landissuesWiththeincreaseofpopulation,humandemandforfoodisincreasing.AccordingtotheInternationalFoodPolicyResearchInstituteestimated,nowworldgraingrowthnotbeabletocatchupwiththepopulationgrowthratein1985afterthepopulationgrowthrateunchanged,eachyearwillbeashortageof100milliontonsofgrainandproteinqualityof50milliontons,therewillb