亮果桉引种和种源试验及其在我国人工林中应用潜力的研究

亮果桉Eucalyptus nitens(Deane ＆ Maiden)Maiden]在分类学上与蓝桉(E.glo-qulas Labill)和多枝桉(E.viminalis Labill)亲缘关系密切,同属于双蒴盖亚属(Sgm-phyomyrtus)蓝桉组。亮果桉是桉树属中高大乔木树种之一,是澳大利亚高大桉树林的重要组成树种。树高通常40-70m,偶见高达90m,胸径1-2m,树干饱满通直。亮果桉的地理分布呈现出典型的地理间断特征,种群之间彼此隔离,因此其形态特征,尤其是幼态叶的特征产生明显的种内地理变异。它分布在澳大利亚的新南威尔土和维多利亚4个相互隔离地区。水平分布的地理纬度范围为30°-38°S,垂直分布海拔

INTRODUCTION AND PROVENANCE TRIAL OF EUCALYPTUS NITENS AND ITS POTENTIAL IN PLANTATION FORESTRY IN CHINA

The trial was established in July 1986 and comprised of 10 provenances of E. nitens and 4 related species, E. globulus, E. maidenii, E. bicostata and E. viminalis. Local seedlots of E. globulus and E. maidenii were includedas contral. 4-year results indicated that there were significant difference be-tween species and between provenances in the growth of height, diameter andvolume. Provenance from Federation Range (12401) has the heighest growthrate while provenance from Marshalls SPUR(15015)has the lowest. The volu-me of provenance 12401 was 2.5 times as much as that of 15015. At age 4,the volume of E. nitens was 23% and 45% larger than that of local E. glo-bulus and local E. maidenii respectively. Bioclimatic analysis showed that E.nitens appeared to have great potential in plantation forestry in Yunnan-Gui-zhou plateau area. It would also be promising in the east part of Sichuan andthe south Jiangxi and Hunan Province as well as south Jiangsu Province andnorth Zhejiang Province.