33年生格氏栲人工林与天然林群落特征比较

对福建三明33年生格氏栲人工林的植物区系和群落特点进行研究,并与临近的格氏栲天然林群落进行比较。结果表明,1 200 m2格氏栲人工林群落共有维管束植物42种,少于相同面积的天然林群落(87种)。种子植物属的热带成分在2个群落中均占优势,人工林群落热带属比例(87.50%)高于天然林(76.56%)。高位芽植物在2个群落中均占优势,人工林群落高位芽植物比例(71.43%)小于天然林(89.66%)。格氏栲人工林层次结构简单,乔木层树种单一,灌木层和草本层发育较差,物种少,乔木层、灌木层和层外植物的Shannon-Wiener多样性指数低于天然林群落;天然林群落层次结构复杂,乔木层树种多,有3个亚层,灌木层发达,有2个亚层,种类较多,草本层发育较差。

Comparison of community characteristics between 33-year-old plantation and natural forest of Castanopsis kawakamii

A 33-year-old Castanopsis kawakamii plantation forest community was studied and compared with the neighboring natural community in Sanming,Fujian,China.The results showed that there were 42 vascular plant species in the study area(1 200 m2) of the plantation community,and fewer species than in the natural community with the same area(87 species).Tropical areal types of genus of spermatophyte were dominant in both of the communities,and their percentage in the plantation(87.50%) was higher than that in the n...