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