古丈县南方红豆杉的植物群落

采用样方法对古丈县南方红豆杉珍稀植物群落进行调查，并对群落结构作了分析.结果表明：（1）该群落区系组成比较丰富和复杂，属于许多属的过渡地带，具有从亚热带向温带过渡的特征；（2）种类组成以壳斗科、樟科、漆树科、卫矛科、榆科、五加科、金缕梅科等为主，但优势种、建群种以温带属为主；（3）种群生活型谱以高位芽占绝对优势，群落垂直结构明显.

Plant Communities of Taxus Mairei in Guzhang County, Hunan Province

The plant communities of Taxus mairei in Guzhang county and the community structure were studied based on the vegetation survey.The results showed:(1)The flora of community is rich and complex,and it belongs to the transitional zone for many genera,the subtropical-temperate zone geographical composition of genera are dominant,about 51.47% of the total genera,and there are characteristics which form subtropical to temperate zone transition.(2)The species are mostly composed of Fagaceae,Lauraceae,Anacardiaceae,Ulmaceae,Araliaceae,Hamameliaceae,etc,but the dominant species in the communities are characterized by temperate genera.(3)In the lifeform spectrum,there are overwhelming meso-,micre-and nano-phanerophytes (55.53% of the total),and abundant linophanerophytes,and the vertical structure of the community is clear.