| snippet:
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Unbroken expanse of natural ecosystems within the current forest extent in Africa, showing no signs of significant human activity. |
| summary:
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Unbroken expanse of natural ecosystems within the current forest extent in Africa, showing no signs of significant human activity. |
| extent:
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[[-10.4678876897127,-25.0104713436861],[50.4024620056835,8.31227874717707]] |
| accessInformation:
|
Greenpeace, University of Maryland, World Resources Institute and Transparent World |
| thumbnail:
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thumbnail/thumbnail.png |
| typeKeywords:
|
["Data","Service","Map Service","ArcGIS Server"] |
| description:
|
An Intact Forest Landscape (IFL) is an unbroken expanse of natural ecosystems within the current forest extent, showing no signs of significant human activity, and large enough that all native biodiversity, including viable populations of wide-ranging species, could be maintained. For the purposes of our global assessment, an IFL is defined as a territory which contains forest and non-forest ecosystems minimally influenced by human activity, with (i) an area of at least 500 km2 (50,000 ha), (ii) a minimum width of 10 km (measured as the diameter of a circle that could be entirely inscribed within the boundaries of the territory), and (iii) a minimum corridor/appendage width of 2 km. Areas with the evidence of certain types of human influence are considered disturbed or fragmented and consequently not eligible for inclusion in the IFL. Specifically, we excluded from the IFL areas which in the last 30-70 years were affected by industrial activities (e.g. logging, mining, oil and gas exploration and extraction) or by stand-replacement fires in the vicinity of transport infrastructure or resource extraction sites, or which were cleared for agriculture or transformed into tree plantations. Settlements and infrastructure (including roads, navigable rivers, power lines, and pipelines) are excluded with a buffer zone of 1 km. Low-intensity and old (> 70 years) disturbances are treated as a "background" influence, and don’t lead to exclusion of the area from the IFL. Sources of background influence include historic (abandoned) shifting cultivation activities, diffuse grazing by domestic animals, low-intensity selective logging, and hunting. Although all IFLs are located within the forest zone (area with tree canopy over above 20%), some may contain extensive naturally tree-less areas, including grasslands, wetlands, lakes, alpine areas, and ice, if they are surrounded by forests. |
| licenseInfo:
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|
| catalogPath:
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|
| title:
|
Intact_Forest_Landscapes |
| type:
|
Map Service |
| url:
|
|
| tags:
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["Africa","IFL","Forest","AEF","SIGHT","WWF-Norway"] |
| culture:
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en-US |
| name:
|
Intact_Forest_Landscapes |
| guid:
|
2729A751-17EE-46C3-88A3-A3C4FB7C7C38 |
| spatialReference:
|
WGS_1984_Web_Mercator_Auxiliary_Sphere |