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通过 2 4 0 0m2 标准地调查 ,研究福建南平溪后安曹下 76年生杉木丰产林的山坡和山洼 2个地段的植物分布 ,结果表明 :老龄杉木林下蕨类植物的比例较天然林大 ,总共有 71科、119属、16 8种维管束植物 ,山坡地段的物种丰富度大大高于山洼地段 ,2个地段的科、属、种共有率分别为 6 3 38%、4 7 90 %、4 2 2 6 % ,说明老龄杉木林都是以热带成分为主 ,其中山洼地段的热带成分比例略高
Through the standard investigation of 2400m2, the distribution of plants in hillsides and hilly areas of 76-year-old fir forest in Ancaoxia, Nanpingxi, Fujian Province was studied. The results showed that the proportion of ferns in old fir forest was larger than that in natural forest, There are 71 families, 119 genera and 168 vascular plants in total. The species richness of hillside sections is much higher than that of mountainous sections. The common shares of families, genera and species in the two sections are respectively 6 3 38% and 47 90% 4 2 26%, indicating that the old fir forest is dominated by tropical components, of which the proportion of tropical depression slightly higher