Wood density varies with tree species, growth conditions and the part of the tree measured. The main stem generally has a higher wood density than the branches, while fast growth is generally related to relatively low wood density. For most species the literature thus gives a range with low, medium and high values. In this database we have collected quantitative information from a number of publicly available sources. As you will note, there is no standardisation of the moisture content of the (‘air dry') wood in the densities reported, and some conversions may be needed.

For more information, visit this link:
http://www.worldagroforestrycentre.org/af2/node/109 or http://www.worldagroforestry.org/sea/Products/AFDbases/WD/Index.htm or send your queries to s.rahayu@cgiar.org