The purpose of this research is to investigate the termite resistance of ten native Taiwan hardwood species and its relationship with wood specific gravity and alcohol-benzene extractives. Wood meals and wood blocks of each species were fed to the termites. Taiwan red pine samples were served as controls, The results revealed that termite mortality was not significantly correlate with oven dry specific gravity (r^2=0.35, F=4.87, p>0.05)but showed significant correlation with alcohol-benzene extractives of the wood(r^2=0.77. F=l3.47, P<0.0l).Weight loss of wood blocks after termite feeding was significantly correlate with oven dry specific gravity of the wood (r^2=0.66. F=17.33, P<0.01) and alcohol-benzene extractive of the wood (r^2=0.52, F=9.89, P<0.05). In conclusion, Cyclobalanopsis pachyloma was the most termite resistant tree species among the 10 tested hardwood species. while Sapium discolor and Mall outs panicululus were the least resistant species.
The purpose of this research is to investigate the termite resistance of ten native Taiwan hardwood species and its relationship with wood specific gravity and alcohol-benzene extractives. Wood meals and wood blocks of each species were fed to the termites. Taiwan red pine samples were served as controls, The results revealed that termite mortality was not significantly correlate with oven dry specific gravity (r^2=0.35, F=4.87, p>0.05)but showed significant correlation with alcohol-benzene extractives of the wood(r^2=0.77. F=l3.47, P<0.0l).Weight loss of wood blocks after termite feeding was significantly correlate with oven dry specific gravity of the wood (r^2=0.66. F=17.33, P<0.01) and alcohol-benzene extractive of the wood (r^2=0.52, F=9.89, P<0.05). In conclusion, Cyclobalanopsis pachyloma was the most termite resistant tree species among the 10 tested hardwood species. while Sapium discolor and Mall outs panicululus were the least resistant species.