Green wood properties for 6-year-old Acacia melanoxylon
In order to provide a reference basis for the rational utilisation of Acacia melanoxylon in plantation forests,the green wood properties were analysed.Bark volume,heartwood percentage,moisture content of green wood and wood density were determined by drainage method,mass method and numerical method.The research showed that:The average values of bark volume fraction,bark mass fraction,heartwood percentage,moisture content of green wood,green wood density and basic density of 6-year-old A.melanoxylon were 15.94%,17.06%,49.53%,77.70%,0.773 and 0.437 g/cm3,respec-tively.With the increase of the tree height,the bark volume fraction,bark mass fraction and basic density showed a fluctu-ating increasing trend;the heartwood percentage showed a decreasing trend and the moisture content of green wood and green wood density showed a fluctuating decreasing trend.From pith to sapwood,the moisture content of green wood gradu-ally decreased,and the green wood density showed a steady and then decreasing trend,the results were consistent in the north-south direction.However,the basic density had different patterns of change in the southward and northward direc-tions,with a decreasing and then increasing trend in the northward direction and a gradual increasing trend in the southward direction.
Acacia melanoxylonBark percentageHeartwood percentageMoisture content of green woodWood density
NETL
NSTL
万方数据
