Atomic Weights
Carbon 12,0107
Oxygen 15,999
CO2 44,0087
 Trees sequester 22 kg CO2 /yr
Petrol/gasoline weighs 0,75 kg Iitre
 produces 2,331 kg Co2 /litre

How much carbon is there in wood?

Rough estimates say about 50% of the dry weight of wood is carbon.

Most building material contains 15% moisture.

The moisture content of freshly harvested logs may be in excess 100% (6), meaning that the weight of water in logs may equal or exceed the weight of the wood itself.



Oct. 27, 2003 – A staggering 98 tons of prehistoric, buried plant material – that’s 196,000 pounds – is required to produce each gallon of gasoline we burn in our cars, SUVs, trucks and other vehicles, according to a study conducted at the University of Utah.

“Can you imagine loading 40 acres worth of wheat – stalks, roots and all – into the tank of your car or SUV every 20 miles?” asks ecologist Jeff Dukes, whose study will be published in the November issue of the journal Climatic Change.

References (1) Smith, W., Miles, P., Perry, C., and Pugh, S. 2009. Forest Resources of the United States. 2007. USDA-Forest Service, Gen. Tech. Rep. WO-78, p. 61. (2) USDA-Forest Service. 2011. National Report on Sustainable Forests – 2010. USDA-FS-979. (3) USEPA (2012). Inventory of US Greenhouse Gas Emissions and Sinks, 1990-2011, p. 7-15. (4) Stinson, G., Kurz, W.; Smith, C.; Neilson, E.; Dymond, C.; Metsaranta, J.; Boisvenue, C.; Rampley, G.; Li, Q.; White, T.; and Blain, D. 2011. An Inventory-based Analysis of Canada’s Managed Forest Carbon Dynamics 1990-2008. Global Change Biology 17(6): 2227-2244. (5) Environment Canada. 2012. Greenhouse Gas Sources and Sinks in Canada 1990-2010. National Inventory Report. (6) Idaho Forest Products Commission (2011). How Much Wood Goes Into Building a House? (7) WoodWorks. 2011. The Carbon Calculator. ( (8) Nielson, R., Dobie, J., and Wright, D. 1985. Conversion Factors for the Forest Products Industry in Western Canada. Forintek Canada Corp., Western Laboratory, SP-24R. (Standard units are derived from the metric units presented in this publication).

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