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Change in forest cover, 1985-2007

Between 1985 and 2007, 49.3% of all forests on the island were lost. In the provinces of Aceh and North Sumatra the figures were 22.7% and 43.4%, respectively. Most forest loss has occurred in the lowlands, the very areas where orangutan density is highest.

Year: 2011

From collection: Orangutans and the Economics of Sustainable Forest Management in Sumatra

Cartographer: Riccardo Pravettoni, UNEP/GRID-Arendal

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