1.Dramaticincreaseinthepopulationfactoristhedramaticincreaseinpopulationinrecentyearsleadingtoglobalwarmingoneofthemainfactors.Besides,ithasalsoseriouslyAdversityribnaturalbalancebetweenecologicalenvironment.Somuchofthepopulation,onlytheirannualemissionsofcarbondioxidewillbeastaggeringfigure,andtheresultswilldirectderivativeofthecontentofcarbondioxideintheatmospherecontinuedtoincrease,thisformofcarbondioxide"greenhouseeffect"willbeadirectimpactonthesurfaceoftheEarthclimatechange.

　　2.AtmosphericpollutionfactorsCurrently,theincreasinglyseriousenvironmentalpollutionhasposedamajorglobalproblem,butalsoleadtoglobalwarmingoneofthemainfactors.Now,withregardtothestudyofglobalclimatechangehasbeenclearlypointedoutthatsincethelate1990sfromtheEarth'ssurfacetemperaturehasstartedtorise.

　　3.MarineecologicaldeteriorationfactorsCurrently,sealevelchangeisaconstantupwardtrend,accordingtoexpertspredictedthatthemiddleofthenextcentury,thesealevelcouldrise50cm.Andiftheydonottakemeasureswillleaddirectlytothedestructionoffreshwaterresourcesandpollutionadverseconsequences.Inaddition,theland-basedactivitieshavealargenumberofestablishmentstoxicchemicalwastesandsolidwastesdischargedintotheocean,andsoconstantly;occurredinamajorChineseseawater(leakage)aswellasoilandotherincidentscausedbyhumanactivitiesincoastalareas,environmentaldegradationandsoonthatledtothedestructionofwaterecologicalenvironmentamajorfactor.

　　4.Landbyerosion,desertification,andotherfactorsdestruction

　　5.Factorssharpdeclineofforestresourcesintheworld,duetonaturalorman-madefactorscausingforestareaissubstantiallysharpdecline.

　　6.Factorsacidrainacidrainharmtotheecologicalenvironmenthasbeentheimpactbroughtaboutbymoreandmoreworldattention.Acidraincandamageforests,acidlakes,threatenbiological.Atpresent,theworldofacidrainandmoreconcentratedinEuropeandNorthAmerica,acidrainoccurredinmostdevelopedcountries,somedevelopingcountries,acidrainisalsogrowingrapidlyanddevelopment.

　　7.AcceleratetheextinctionofspeciesonEarthbiologicalfactorsisavaluablehumanresources,andbiodiversityismankind'ssurvivalanddevelopment.ButnowthebiologicalspeciesonEartharebeinglostatunprecedentedrates.

　　8.WaterpollutionfactorsAccordingtotheGlobalEnvironmentMonitoringSystemshowthatthewaterqualitymonitoringproject,theworldabout10%ofthewaterpollutionmonitoring,inthiscentury,humanbeingsarethesharpincreaseinwaterconsumption,waterpollutionandthescaleisconstantlyexpanding,freshwaterontheformationandtheneedfortheonepairofcontradictions.Clearly,thetreatmentofwaterpollutionisveryurgentandimportant.

　　9.Toxicwastepollutionfactorsgrowingtoxicchemicalsnotonlyforthesurvivalofmankindposeaseriousthreat,butalsofortheecologicalenvironmentoftheEarth'ssurfacewillalsobringharm.