Intact forest landscape (original) (raw)
An intact forest landscape (IFL) is an unbroken natural landscape of a forest ecosystem and its habitat–plant community components, in an extant forest zone. An IFL is a natural environment with no signs of significant human activity or habitat fragmentation, and of sufficient size to contain, support, and maintain the complex of indigenous biodiversity of viable populations of a wide range of genera and species, and their ecological effects.
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| dbo:abstract | An intact forest landscape (IFL) is an unbroken natural landscape of a forest ecosystem and its habitat–plant community components, in an extant forest zone. An IFL is a natural environment with no signs of significant human activity or habitat fragmentation, and of sufficient size to contain, support, and maintain the complex of indigenous biodiversity of viable populations of a wide range of genera and species, and their ecological effects. IFLs are estimated to cover 23 percent of forest ecosystems (13.1 million km2). Two biomes hold almost all of these IFLs: dense tropical and subtropical forests (45 percent) and boreal forests (44 percent), while the proportion of IFLs in temperate broadleaf and mixed forests is very small. IFLs remain in 66 of the 149 countries that could potentially have them. Three of these countries, Canada, Russia, and Brazil, contain 64 percent of the total IFL area in the world. Nineteen percent of the global IFL area is under some form of protection, but only 10 percent is strictly protected, i.e., belongs to IUCN protected areas categories I–III. It is estimated that the planet has lost seven percent of its IFLs since 2000. (en) Un paysage forestier intact ou PFI (plus souvent désigné par Intact Forest Landscape ou IFL dans la littérature) désigne — dans une zone forestière existante — un paysage « naturel » considéré comme à la fois non artificiellement morcelé et non dégradé. La dégradation peut porter tant sur la continuité écologique que sur les composantes écosystémiques générales, que plus spécifiquement floristiques, faunistiques et d'habitats . Ce territoire qui inclut des forêts primaires, des zones humides et des prairies doit aussi être assez vaste pour que toute la biodiversité autochtone puisse durablement s'y maintenir, en particulier pour les populations d'espèces à large répartition ou nécessitant un grand territoire de vie. Dans ce contexte, on définit comme intact tout milieu naturel exempt de traces d'activité humaine significative, et de tout signe de fragmentation anthropique de l'habitat. Ce paysage doit aussi avoir une taille suffisante pour contenir et naturellement entretenir la biodiversité autochtone, des « populations viables » d'une large gamme de biotes et taxons et, des effets écologiques de la biodiversité correspondant à l'écopotentialité forestière de la région considérée. Selon la carte mondiale des paysages forestiers intacts mise à jour au tout début du XXIe siècle, environ 23 % (13,1 millions de km2) de forêts intactes subsistaient à la fin du XXe siècle. Ces forêts étaient presque toutes situées dans deux biomes (à 45 % en zone tropicale et 44 % en zone boréale), avec une très faible part de forêts feuillues tempérées et mixtes. 66 des 149 pays forestiers avaient perdu leurs paysages forestiers intacts. Au début du XXe siècle, dans le monde, seuls 10 % des PFI sont strictement protégés et, surtout concentrés dans quelques pays (voir détails plus bas). (fr) |
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| dbo:wikiPageExternalLink | http://www.intactforests.org/publications/publications.htm http://www.globalforestwatch.org/english/about/publications.htm http://www.intactforests.org https://web.archive.org/web/20110517030550/http:/www.biodiversitya-z.org/areas/21 http://www.greenpeace.org/international/campaigns/forests/our-disappearing-forests http://www.biodiversitya-z.org/areas/16/ |
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| rdfs:comment | An intact forest landscape (IFL) is an unbroken natural landscape of a forest ecosystem and its habitat–plant community components, in an extant forest zone. An IFL is a natural environment with no signs of significant human activity or habitat fragmentation, and of sufficient size to contain, support, and maintain the complex of indigenous biodiversity of viable populations of a wide range of genera and species, and their ecological effects. (en) Un paysage forestier intact ou PFI (plus souvent désigné par Intact Forest Landscape ou IFL dans la littérature) désigne — dans une zone forestière existante — un paysage « naturel » considéré comme à la fois non artificiellement morcelé et non dégradé. La dégradation peut porter tant sur la continuité écologique que sur les composantes écosystémiques générales, que plus spécifiquement floristiques, faunistiques et d'habitats . Ce territoire qui inclut des forêts primaires, des zones humides et des prairies doit aussi être assez vaste pour que toute la biodiversité autochtone puisse durablement s'y maintenir, en particulier pour les populations d'espèces à large répartition ou nécessitant un grand territoire de vie. (fr) |
| rdfs:label | Intact forest landscape (en) Paysage forestier intact (fr) |
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