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  SeveralanimalspeciesincludinggorillasinRwandaandtigersinBangladeshcouldriskextinctioniftheimpactofclimatechangeandextremeweatherontheirhabitatsisnotaddressed,aUNreportshowedonSunday.Launchedonthesidelinesofglob

  SeveralanimalspeciesincludinggorillasinRwandaandtigersinBangladeshcouldriskextinctioniftheimpactofclimatechangeandextremeweatherontheirhabitatsisnotaddressed,aUNreportshowedonSunday.

  LaunchedonthesidelinesofglobalclimatenegotiationsinDurban,thereportbytheUnitedNationsFoodandAgricultureOrganizationshowshowhighertemperatures,theriseinsealevels,deforestationandexcessivelandusehavedamagedthehabitatsofcertainspecies,especiallyinAfrica.

  “Manyecosystemshavealreadybeenstressedbyincreasingpopulation,historicalandrecentdeforestation,unsustainablemanagementpracticesandeveninvasive(入侵的)species,”EduardoRojas-Briales,assistantdirectorgeneralattheFAO'sforestrydepartment,saidatthelaunchofthereport.

  Themostaffectedareasincludemountains,isolatedislandsandcoastalareas,whichlimitthepossibilitiesforanimalstomigrateelsewhereandcreatenewhabitats.

  “Theremainingpopulationsbecomesurroundedinverysmallecosystems,theyhaveinbreeding(近亲交配)problems...andattheendthesespeciesmaydisappear,”headded.

  OtherexamplesofaffectedanimalsincludedelephantsinMali,lionsintheSerengetiandcrocodilesinMalawi.

  Thereportsaidanestimated20-30percentofplantandanimalspecieswillbeathigherriskofextinctionduetoglobalwarmingandasignificantproportionofnativespeciesmaybecomeextinctby2050asaconsequence.

  Otherconsequencescouldincludethespreadofinvasivespeciesandinfectiousdiseases,itsaid.

  Thereporturgesmorefocusonrestorationofdamagedecosystems,especiallythosekeytodealingwithclimatechangesuchasmangroves(红树林),inlandwaters,forests,savannahs(非洲大草原)andgrasslands.

  TheFAOalsocalledforthecreationofmigrationcorridorsforanimalsinareaswheretheirmovementwaslimited.

  Theorganizationsaidwhilemoreresourceswereflowingtobiodiversityconservation,moreactionatthegovernmentandpolicylevelwasneeded.

  Italsourgedlocalcommunitiestodevelopprojectsthatmitigatetheimpactofclimatechangeonwildlife,namingeco-tourismactivitiesasanexampleWhatdoestheauthortellus

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2020-04-16 18:52
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潘荣江

  CDBCA

2020-04-16 18:56:26

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