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Use constraints
Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports. For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Riccardo Pravettoni, UNEP/GRID-Arendal)
Source(s)
Hillshade generated from SRTM 90m DEM available from the CGIAR website (http://srtm.csi.cgiar.org/).
Bathymetry from the ETOPO1 Global Relief Model downloaded from: http://www.ngdc.noaa.gov/mgg/global/global.html
Sumatran orangutan distribution shapefile prepared by Singleton and Wich and based on Wich et al. 2008 with unpublished data added.
Forest layer interpreted by PanEco/ YEL, 2010 from Landsat 5 TM, 2009 and Landsat ETM 7 filled, 2010.
Boundaries of Plantation concessions in the Tripa area digitized by PanEco/YEL based on concession rights maps issued by National Land Agency of Aceh Province, and for other region as shown on map adapted from LMU/LDP data based on National Land Agencies of Aceh Province and Langkat District.
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Uploaded on Wednesday 01 Feb 2012
by GRID-Arendal
Plantation concessions
Year:
2011
Author:
Riccardo Pravettoni, UNEP/GRID-Arendal
Description:
Oil palm plantations depend on the microclimate conditions generated by nearby forests, and the rivers emanating from orangutan habitat. Not all plantations concessions on the map have been cleared and planted yet. The majority of concessions are oil palm, but the map also contains rubber and other plantation crops. The establishment of many of these plantations has resulted in significant losses in orangutan habitat, since they have been created by converting forests instead of making use of already deforested areas, such as existing agricultural or low current use value land.
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