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Concept
Intact forest landscape
Summary
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.
The term "intact forest landscape" was developed by a group of environmental non-governmental organizations including Greenpeace, the World Resources Institute, Biodiversity Conservation Center, International Socio-Ecological Union, and Transparent World. IFL has been used in regional and global forest monitoring projects such as Intact-Forests.org, and in scientific forest ecology research.
The concept of an intact forest landscape and its technical definition were developed to help create, implement, and monitor policies concerning the human impact on forest landscapes at the regional or country levels.
Technically, an IFL is defined as an area which contains forest and non-forest ecosystems minimally influenced by human economic activity, with an area of at least 500 km2 (50,000 ha) and a minimal width of 10 km (measured as the diameter of a circle that is entirely inscribed within the boundaries of the territory).
Official source
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