【摘要】 经过15 a的调查研究,首次报道了白石砬子国家级自然保护区共有观赏树木36科、74属、142种。其中国家级珍稀濒危保护树木11种,占保护区观赏树木种数的7.75%。从观赏特性看:观花类、观果类及观叶类最多,分别占观赏树木种数的45.07%,59.15%,33.80%;从园林用途看:园景树类、盆景类、花灌木类最多,分别占观赏树木种数的49.30%,37.83%,33.10%。69.90%的种类属于北温带分布区类型。优势科主要是蔷薇科、忍冬科和槭树科等。文中还介绍了观赏树木其它方面的用途。更多还原

【Abstract】 Based on 15-year’s investigation,it was found that there were 142 species of ornamental tree species belonging to 74 genera of 36 families,including 11 endangered tree soecies under national protectdion which accounted for 7.75 % of the total tree species in the nature reserve.From the viewpiunts of ornamental characters,the flower plants,fruit plants and foliage plants took the percentages of 45.07 %,59.15 % and 33.80 %of the toral respectively.From the viewpoints of ornamental usage,the plants for garden landscape,potted landscape and shrub bedding took the percentaged of 40.30 %,37.83 % and 33.10 % of the total respectively.Abour 69.90 % of the tree species were of the type of northern temperate distribution zone.The dominant families were Rosaceae,Caprifoliaceae and Aceraceae,etc.Some other applications of ornamental tree species were also introduced.更多还原