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REGBorneo_ForestCover_2015_CIFOR (Map Service)


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Service Description:
Areas(in Ha)BorneoKalimantanSabahSarawakBrunei
Total land area73,719,01153,342,2257,396,62112,400,501579,664
Intact Forest area in 201520,531,822 16,798,025
1,647,1491,756,476 
330,172
Logged forest area in 201516,802,8939,323,126
2,322,1395,080,87176,757
Total forest area in 201537,334,71526,121,1513,969,2886,837,347406,929

Definition 
In Borneo, ‘Forest’ are areas that area mainly composed of closed-canopy (>90% cover) evergreen Dipterocarps. In some highland regions, ‘Forest’ may also include Kerangas and in coastal areas, mangroves. ‘Intact Forest‘ include pristine old-growth forests, i.e. forests that have never been disturbed by humans, or for which disturbances were too localized to be detected by satellites. ‘Logged Forest‘ are areas of old-growth forest that have been impacted by industrial-scale mechanized selective logging at some point since 1973. They have lost their original structure, but have remained in good condition and regenerate quickly. ‘Regrowth Forest’ are areas of forest that were likely young regrowth in 1973 and resemble old-growth forest in 2015.  In 1973, before extractive industries began, forests were mainly Intact (old-growth). 

‘Forest’ excludes young forest regrowth, scrublands, tree plantations, agricultural land, and non-vegetated areas. The latter are clumped into ‘Non-Forest’.

Method 
‘Forest’ was classified using in the near-infrared, mid-infrared, and red bands of LANDSAT satellite imagery. Various existing datasets have been used.

We further divided ‘Forest’ into ‘Intact’ and ‘Logged’ using our published dataset of logging roads and a buffer distance method (see information describing how logging roads have been mapped). Briefly, we consider that a forest area has never been logged if our database of satellite images never detected the presence of large (> 10m wide) logging roads in the forest. Degradation by logging usually becomes undetectable within a few years, due to fast forest re-growth. From a satellite perspective, the spectral colors of forests degraded by logging resemble those of intact forests, which explains why satellite-based deforestation analyses categorize logged forests as forest.

For more information on methods used to map ‘Forest’ in year 2015, refer to this scientific publication: Gaveau et al. (2016) Rapid conversions and avoided deforestation: examining four decades of industrial plantation expansion in Borneo. Scientific Reports.

For more information on methods used to map ‘Logged Forest’, refer to this scientific publication: Gaveau et al. (2014) Four decades of forest persistence, clearance and logging on Borneo. Plos One


Map Name: Layers

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All Layers and Tables

Layers: Tables: Description:
Areas(in Ha)BorneoKalimantanSabahSarawakBrunei
Total land area73,719,01153,342,2257,396,62112,400,501579,664
Intact Forest area in 201520,531,822 16,798,025
1,647,1491,756,476 
330,172
Logged forest area in 201516,802,8939,323,126
2,322,1395,080,87176,757
Total forest area in 201537,334,71526,121,1513,969,2886,837,347406,929

Definition 
In Borneo, ‘Forest’ are areas that area mainly composed of closed-canopy (>90% cover) evergreen Dipterocarps. In some highland regions, ‘Forest’ may also include Kerangas and in coastal areas, mangroves. ‘Intact Forest‘ include pristine old-growth forests, i.e. forests that have never been disturbed by humans, or for which disturbances were too localized to be detected by satellites. ‘Logged Forest‘ are areas of old-growth forest that have been impacted by industrial-scale mechanized selective logging at some point since 1973. They have lost their original structure, but have remained in good condition and regenerate quickly. ‘Regrowth Forest’ are areas of forest that were likely young regrowth in 1973 and resemble old-growth forest in 2015.  In 1973, before extractive industries began, forests were mainly Intact (old-growth). 

‘Forest’ excludes young forest regrowth, scrublands, tree plantations, agricultural land, and non-vegetated areas. The latter are clumped into ‘Non-Forest’.

Method 
‘Forest’ was classified using in the near-infrared, mid-infrared, and red bands of LANDSAT satellite imagery. Various existing datasets have been used.

We further divided ‘Forest’ into ‘Intact’ and ‘Logged’ using our published dataset of logging roads and a buffer distance method (see information describing how logging roads have been mapped). Briefly, we consider that a forest area has never been logged if our database of satellite images never detected the presence of large (> 10m wide) logging roads in the forest. Degradation by logging usually becomes undetectable within a few years, due to fast forest re-growth. From a satellite perspective, the spectral colors of forests degraded by logging resemble those of intact forests, which explains why satellite-based deforestation analyses categorize logged forests as forest.

For more information on methods used to map ‘Forest’ in year 2015, refer to this scientific publication: Gaveau et al. (2016) Rapid conversions and avoided deforestation: examining four decades of industrial plantation expansion in Borneo. Scientific Reports.

For more information on methods used to map ‘Logged Forest’, refer to this scientific publication: Gaveau et al. (2014) Four decades of forest persistence, clearance and logging on Borneo. Plos One


Copyright Text: CIFOR

Spatial Reference:
102100

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