module9Unit1Weneedtoprotectanimals第一课时课件

我们需要保护动物第九模块第一单元我们需要保护动物第一课时大纲-PPT标题幻灯片我们需要保护动物

1.:什么是生物多样性？

2.为什么生物多样性重要？

3.生物多样性的主要威胁

4.栖息地丧失和破碎化

5.气候变化

6.入侵物种

7.过度利用

8.Case Studies:Endangered AnimalsAfricanElephants BengalTigersAfrican elephants,the largestland Bengaltigers,known for their strikinganimalson earth,are facinghabitat lossorange fur,are criticallyendangeredand poachingdue to the demandfor due to habitatdestruction andillegalivory.hunting.Giant PandasLeatherback SeaTurtlesGiant pandas,native toChina,are Leatherbacksea turtles,the largestendangeredduetohabitat lossand lowturtles inthe world,face threatsfrombirth rates.They relyalmost entirelyon pollution,entanglement infishing gear,bamboo fortheir diet.and habitatdestruction.What isBiodiversityDiversity ofLifeBiodiversity refersto thevariety ofliving organismson Earth,including plants,animals,and microorganisms,and theecosystems inwhich theylive.Genetic VariationItalso encompassesthe geneticdifferences withinand betweenspecies,whichis crucial fortheadaptation andsurvival ofpopulations.Ecosystem FunctioningBiodiversityplays akey rolein maintainingthe functioningof ecosystems,such asnutrient cycling,pollination,and pestcontrol.Why isBiodiversity Important1Ecological Benefits2Economic Value3CulturalSignificanceBiodiversity Biodiversityprovidescontributes tothe valuableresources Biodiversityisstability andand services,such asdeeply intertwinedresilienceof food,medicine,with humanecosystems,making cleanwater,and culturesandthem moreresistant tourismrevenue.spirituality,to environmentalproviding aestheticchanges.and recreationalvalues.Top Threatsto Biodiversity1Habitat LossandFragmentationConversion ofnatural habitatsClimateChange2for agriculture,urbanization,and infrastructuredevelopmentGlobal warmingand changes infragments anddestroysprecipitation patternsdisruptecosystems.ecosystems,affecting speciesdistributionsand ecological3Invasive Speciesinteractions.Non-native speciesintroducedby humanactivities canoutcompetenative species andOverexploitation4disrupt naturalecologicalprocesses.Unsustainable hunting,fishing,and harvestingof resourcescandeplete speciespopulations and5Pollutiondisrupt ecologicalbalance.Chemical pollutants,such aspesticidesand oilspills,contaminate habitats,threatenspecies,and disruptecosystemfunctioning.Threatened Speciesvs.EndangeredSpeciesThreatened SpeciesEndangered SpeciesThreatenedspecies arethose facinga Endangeredspecies areat avery highhighrisk of extinction inthe nearfuture riskofextinctionand have a lowbutare notyet consideredendangered.population sizeor limiteddistribution.Causes ofEndangermentHuman ActivitiesNatural CausesHabitatdestruction,pollution,climate Naturaldisasters,disease outbreaks,andchange,and overexploitationdriven bychangesinenvironmental conditionscanhuman actionsare majorcauses ofalso contributetotheendangerment ofendangerment.species.Role ofHumans inEndangeredSpecies Recovery1Habitat ProtectionConservingand restoringhabitatsis crucialfor theLegislationand Regulations2survival andrecovery ofendangeredspecies.Enacting andenforcing lawsandregulations thatprotect3Conservation Programsendangeredspeciesandtheirhabitats is essential.Implementing conservationprograms,such ascaptivebreeding andreintroduction,can helpincrease thepopulationof endangeredspecies.Conclusion:Why WeMust ProtectAnimalsBiodiversityConservationProtecting animalsisessentialfor maintainingbiodiversity,which iscrucialforthehealth andsustainability ofour planet.Ethical ResponsibilityWehaveamoral obligationto safeguardthe naturalworld andensure thewell-being ofother speciesthat shareour planet.InterconnectednessThe survivaland conservationof animalsare interconnectedwith ourown well-being andthe healthof ecosystems.。