老杉木人工林与松阔混交林群落区系特征比较

Comparison of Flora of Old-growth Chinese fir and Pinus Massoniana-broadleaved Mixed Forest Communities

通过 360 0 m2标准地调查 ,研究福建南平溪后安曹下 76年生杉木丰产林取代松阔混交林后群落区系特征的变化 ,结果表明 :老龄杉木群落蕨类植物种类数量显著大于松阔混交林 ,而双子叶植物种类数量小于松阔混交林 ;坡位梯度不同带来的土壤水分等生态因子梯度的变化对植物区系组成的影响较大 ;坡位低、环境湿度大 。

The changes of community floristic composition in a 76 year old Chinese fir community, which was originally occupied by a Pinus massoniana broadleaved mixed forest community,were studied based on the data collected from sample plots with an area of 3600 m 2 in Ancaoxia,Nanping.The results showed that the old growth Chinese fir community had far more Pteridophyta species,but less Dicotyledon than the Pinus massoniana broadleaved mixed forest community.Gradients of water and the other ecological factors caused by gradients of slope location had great impact on the floristic composition.Lower slope location and higher environment humidity resulted in higher rate of tropical generic aeral type