铜尾矿废弃地定居的旱柳群落结构特征研究

对安庆月山铜尾矿废弃地定居的旱柳群落结构进行了野外调查和分析。调查发现,该调查区域内自然定居的高等植物24种,隶属于13科24属。木本植物中以旱柳为主,草本植物中以白茅、芦苇和水蜡烛为主;群落中木本植物中旱柳的重要值为2.34,远高于其他定居的木本植物,其为铜尾矿木本植物群落的建群种和优势种,该群落为旱柳群落。该群落的多样性较低,其Simpson指数为0.615 3,Shannon-Wiener指数为2.557 0,均匀度E为0.193 6。结果表明,铜尾矿废弃地定居的旱柳群落结构简单,群落多样性指数低,属于草本植物群落向木本植物群落演替的初期阶段。

Studies on Characteristics of Salix matsudana Community Structure on the Copper Tailings Wasteland

Salix matsudana community structure in Yueshan copper tailings wasteland was investigated and analyzed in Anqing.The research results showed that there were 24 species of higher plants in the investigation areas,which belonged to 13 families and 24 genera.S.matsudana was dominant specie among the woody plants,and I.cylindrica,P.australis and Typha angustifolia were dominant species among herbaceous plants.The important value of S.matsudana was 2.34,which was higher than that of other woody plants in this community.S.matsudana was the constructive species and dominant species,so this community should be named S.matsudana community.The community diversity index was low,its Simpson index was 0.615 3,Shannon-Wiener index was 2.557 0 and Evenness index was 0.193 6,respectively.The results indicated S.matsudana community structure in the copper tailings was simple and unstable,diversity index was low,belonging to the early succession stage from herbaceous plant community to woody plant community.