Timber! Are We Out on a Limb? - Recent Articles - Greensource Magazine

The forests of the world sequester carbon in vast quantities: an estimated 289 gigatonnes (Gt) in their biomass alone, according to the Food and Agriculture Organization (FAO) of the United Nations. About half of the dry weight of a tree is stored carbon, which is released when the wood rots or burns. • Substituting wood for other structural materials in construction locks in forest-sequestered carbon while avoiding the environmental scars of mining for metals and concrete constituents, and saving the energy and greenhouse-gas emissions of their manufacture. Slide Show Infographics by Tien-Min Liao According to the United Nations Food and Agriculture Organization, there are about 4 billion hectares (ha) (10 billion acres) of forest in the world today, of which about 3 billion ha is primarily for the production of wood and non-wood products, and a further 900 million ha is ...

Full article: http://greensource.construction.com/features/other/2013/1...

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