RT null T1 Orangutans and the Economics of Sustainable Forest Management in Sumatra A1 United Nations Environment Programme, K1 forestry K1 sustainable development K1 deforestation K1 green economy K1 biodiversity K1 ecosystem SN 978-82-7701-095-3 YR 2011 FD 2011 LK https://wedocs.unep.org/handle/20.500.11822/8027 UL https://wedocs.unep.org/handle/20.500.11822/8027 NO Deforestation is responsible for approximately 17% of global greenhouse gas emissions, and is therefore a major contributor to climate change, but also to the loss of biodiversity and ecosystem services and a direct threat to Asia’s great ape the orangutan. Between 2005-2010, Indonesia had accelerating forest loss compared to 2000-2005 ad is within the highest five countries for percentage of primary forest loss globally. This acceleration in forest loss not only negatively impacts forests and biodiversity, but also local and global ecosystem services such as water supply, human health and food security in addition to climate change mitigation. DS UN Environment Document Repository RD Sep 24, 2026