欢迎来到天天文库
浏览记录
ID:39420352
大小:24.10 KB
页数:10页
时间:2019-07-02
《Series Proportion of marine areas protected - World Database on 海洋保护区-世界数据库系列比例》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、ShortSummaryofMethodologyThisisashortsummaryofthemethodologyusedbyUNEP-WCMCtocalculatetheprotectedareastatisticsforthe2013MillenniumDevelopmentGoals(MDG)Report.ThissummaryandthestatisticswillbepublishedbytheUnitedNationsStatisticsDivisionontheMDGIndicatorswebpage.Pleasecontactprotectedareas@u
2、nep-wcmc.orgformoreinformation.Contents1)Proportionofterrestrialareasprotected2)Proportionofmarineareasprotected3)Proportionofterrestrialandmarineareasprotected101)ProportionofterrestrialareasprotectedDefinitionTheunitsofmeasureinthisindicatorareterrestrialprotectedareas.TheInternationalUnion
3、forConservationofNature(IUCN)definesaprotectedareaas‘aclearlydefinedgeographicalspace,recognized,dedicatedandmanaged,throughlegalorothereffectivemeans,toachievethelong-termconservationofnaturewithassociatedecosystemservicesandculturalvalues’(Dudley,2008).MethodofcomputationThisindicatoriscalc
4、ulatedusingalldesignatedprotectedareasrecordedintheWorldDatabaseonProtectedAreas(WDPA)whoselocationandextentisknown.TheWDPAisheldwithinafilegeodatabasethatstoresinformationaboutprotectedareassuchastheirname,typeanddateofdesignation,documentedarea,geographiclocation(point)and/orboundary(polygo
5、n).AGISanalysisisusedtocalculateterrestrialandmarineprotection.ForthisaglobalprotectedarealayeriscreatedbycombiningthepolygonsandpointsrecordedintheWDPA.Circularbuffersarecreatedaroundpointsbasedontheknownextentofprotectedareasforwhichnopolygonisavailable.Annualprotectedarealayersarecreatedby
6、dissolvingtheglobalprotectedarealayerbytheknownyearofestablishmentofprotectedareasrecordedintheWDPA.Theannualprotectedarealayersareoverlaidwithcountry/territoryboundariesandcoastlinestoobtaintheabsolutecoverage(insquarekilometers)ofprotectedareasbycountry/territoryperyearfrom1990topresent.The
7、totalareaofacountry’s/territory’sterrestrialprotectedareasisdividedbythetotalareaofitslandareas(includinginlandwaters)toobtaintherelativecoverage(percentage)ofprotectedareas.CommentsandlimitationsTheextenttowhichthelandareas,includinginlandwa
此文档下载收益归作者所有