Abstract
Taiwan acacia (Acacia confusa) is a nitrogen-fixing tree with strong adaptability and has been planted extensively in Taiwan. The wood color and quality compared to rose wood but with grater gravity make it more valuable. It is a tree species with the greatest efficiency of CO2 sequestration and a major composition of Shiitak growth bag in Taiwan. The whole trees including wood, bark, twig, and flower were found chemicals with antioxidant activity. In this project we woud select trees with good phenotype. Clonal seed orchard and progeny test would established. Silviculture technique including different planting densities, selection felling, copse regeneration, etc. would be conducted.