摘要
通过α-多样性指数研究了蕲春九棵松野生蕲艾的群落基本结构。结果表明:该蕲艾居群面积约为15~20 m~2,植株数约25株左右,盖度仅为3%,为小居群。主要有10科13属13种植物与蕲艾相伴生。蕲春九棵松野生蕲艾群落的群丛名为刺槐+尖头青竹+野菊花。α-多样性指数分析表明蕲艾群落辛普森指数(D)、香农威纳指数(H′)和Pielou均匀度指数(J)分别为0.867、2.180和0.850。人为干扰和过度采集是影响该野生蕲艾居群恢复更新的重要原因。
Population characteristics and community structure of wild Artemisia argyi at Qichun in China were surveyed with α-diversity index. The main results were as follows:the population area of Artemisia arg yi was 15~20 m2,coverage was 3%. The population was small population,the plant number was about 25 individuals. It was found that there were 13 plant species belonging to 10 families and 13 genera in the community,among which Robinia pseudoacacia,Phyllostachys acuta, Dendran-thema indicum,and Stephania japonica were dominant species. The vegetation was called Robinia pseudoacacia + Phyllostachys acuta + Dendranthema indicum Ass. α-diversity index analysis indicated that Simpson index(D),Shannon-Wiener index(H′),and Pielou evenness index(J)were 0. 867,2. 180,and 0. 850,respectively. Human disturbance and excessive collection might be an important factor affecting the wild populations of restoration and regeneration.
引文
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