关键词: 园林树木, 基本密度, 生材密度, 生材含水率

Abstract: The wood basic density, green density and moisture content of 30 species landscape trees planted in Longyan urban area had been determined. The results showed that the highest of basic density of softwood was Cupressus funebris (0.636 g穋m-3), the lowest was Araucaria cunninghamii (0.462 g穋m-3). In hardwood, the highest of basic density was Acacia confusa (0.757 g穋m-3), the lowest was Ceiba speciosa (0.228 g穋m-3). The highest of green density of softwood was Podocarpus nagi (0.975 g穋m-3), the lowest was Araucaria cunninghamii (0.838 g穋m-3). In hardwood, the highest of green density was Acacia confusa (1.204g穋m-3), the lowest is Aleurites moluccana (0.799 g穋m-3). The highest of moisture content of green wood in softwood was P. nagi 105%, the lowest was Cupressus funebris (30%). In hardwood, the highest of moisture content of green wood was Ceiba speciosa (319%), the lowest was Cornus wilsoniana and Casuarina equisetifolia (both 56%). Between the south and north direction, the basic density, green density and moisture content of wood were not significantly different. Within the scope of 8 cm from the bark, the radial variation patterns of basic density and green density can be classified into five types: (1)Density increased from pith to bark; (2)Density decreased from pith to bark; (3)Density was not changed obviously from the bark of 8 cm scope; (4)Density was lower from the bark 3 to 5 cm; (5)Density was higher from the bark 3 to 5 cm. The radial variation patterns of the moisture content of green wood were the former four types as mentioned above.

Key words: landscape tree, basic density, green density, moisture content of green wood