南平安曹下杉木林植被分析

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

The Vegetation Analysis of Cunninghamia lanceolata Forests in Anchaoxia, Nanping

The study results show that the portion of ferns under old Cunninghamia lanceolata forests is larger than that under the natural forests,71 families 119 genera 168 species vascular plants exist totally,the species rich degree of slope sector is greatly higher than that of low lying mountain sector.The 2 sector family,genus and species intercommunity rates are 63.3%,47.90% and 42.20% respectively,which shows that old C.lanceolata forests are all mainly composed of tropical components,among which the tropical component proportion of low-lying mountain sector is slightly higher.