The Extent of Forest in Dryland Biomes. Bastin, J.; Berrahmouni, N.; Grainger, A.; Maniatis, D.; Mollicone, D.; Moore, R.; Patriarca, C.; Picard, N.; Sparrow, B.; Abraham, E. M.; Aloui, K.; Atesoglu, A.; Attore, F.; Bassüllü, Ç.; Bey, A.; Garzuglia, M.; Garćıa-Montero, L. G.; Groot, N.; Guerin, G.; Laestadius, L.; Lowe, A. J.; Mamane, B.; Marchi, G.; Patterson, P.; Rezende, M.; Ricci, S.; Salcedo, I.; Diaz, A. S.; Stolle, F.; Surappaeva, V.; and Castro, R. 356(6338):635–638.
The Extent of Forest in Dryland Biomes [link]Paper  doi  abstract   bibtex   
[Mapping the world's dry forests] The extent of forest area in dryland habitats, which occupy more than 40\,% of Earth's land surface, is uncertain compared with that in other biomes. Bastin et al. provide a global estimate of forest extent in drylands, calculated from high-resolution satellite images covering more than 200,000 plots. Forests in drylands are much more extensive than previously reported and cover a total area similar to that of tropical rainforests or boreal forests. This increases estimates of global forest cover by at least 9\,%, a finding that will be important in estimating the terrestrial carbon sink. [Abstract] Dryland biomes cover two-fifths of Earth's land surface, but their forest area is poorly known. Here, we report an estimate of global forest extent in dryland biomes, based on analyzing more than 210,000 0.5-hectare sample plots through a photo-interpretation approach using large databases of satellite imagery at (i) very high spatial resolution and (ii) very high temporal resolution, which are available through the Google Earth platform. We show that in 2015, 1327 million hectares of drylands had more than 10\,% tree-cover, and 1079 million hectares comprised forest. Our estimate is 40 to 47\,% higher than previous estimates, corresponding to 467 million hectares of forest that have never been reported before. This increases current estimates of global forest cover by at least 9\,%.
@article{bastinExtentForestDryland2017,
  title = {The Extent of Forest in Dryland Biomes},
  author = {Bastin, Jean-François and Berrahmouni, Nora and Grainger, Alan and Maniatis, Danae and Mollicone, Danilo and Moore, Rebecca and Patriarca, Chiara and Picard, Nicolas and Sparrow, Ben and Abraham, Elena M. and Aloui, Kamel and Atesoglu, Ayhan and Attore, Fabio and Bassüllü, Çağlar and Bey, Adia and Garzuglia, Monica and Garćıa-Montero, Luis G. and Groot, Nikée and Guerin, Greg and Laestadius, Lars and Lowe, Andrew J. and Mamane, Bako and Marchi, Giulio and Patterson, Paul and Rezende, Marcelo and Ricci, Stefano and Salcedo, Ignacio and Diaz, Alfonso S. and Stolle, Fred and Surappaeva, Venera and Castro, Rene},
  date = {2017-05},
  journaltitle = {Science},
  volume = {356},
  pages = {635--638},
  issn = {0036-8075},
  doi = {10.1126/science.aam6527},
  url = {http://mfkp.org/INRMM/article/14624454},
  abstract = {[Mapping the world's dry forests] The extent of forest area in dryland habitats, which occupy more than 40\,\% of Earth's land surface, is uncertain compared with that in other biomes. Bastin et al. provide a global estimate of forest extent in drylands, calculated from high-resolution satellite images covering more than 200,000 plots. Forests in drylands are much more extensive than previously reported and cover a total area similar to that of tropical rainforests or boreal forests. This increases estimates of global forest cover by at least 9\,\%, a finding that will be important in estimating the terrestrial carbon sink.

[Abstract] Dryland biomes cover two-fifths of Earth's land surface, but their forest area is poorly known. Here, we report an estimate of global forest extent in dryland biomes, based on analyzing more than 210,000 0.5-hectare sample plots through a photo-interpretation approach using large databases of satellite imagery at (i) very high spatial resolution and (ii) very high temporal resolution, which are available through the Google Earth platform. We show that in 2015, 1327 million hectares of drylands had more than 10\,\% tree-cover, and 1079 million hectares comprised forest. Our estimate is 40 to 47\,\% higher than previous estimates, corresponding to 467 million hectares of forest that have never been reported before. This increases current estimates of global forest cover by at least 9\,\%.},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-14624454,~to-add-doi-URL,arid-region,dry-region,field-measurements,forest-cover,forest-resources,global-scale,land-cover,open-data,remote-sensing,tree-de},
  number = {6338}
}
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