普定县天龙山喀斯特森林群落植物多样性对比研究

摘要

The primary community of karst forest in Tianlong Mountain of Puding County was studied in terms of species composition, community physiognomy, and structure feature. The result showed there in the eonmmunity are 40 species belonging to 33 genera in 26 families; the appem：ance of the community was determined mainly by the evergreen phanerophytes with leathery, sample, mesophyllous, and entire leaves; the community structure could be divided into arbors layer, shrub layer, herbaceous layer, and interstratum plants; as for the plant diversity, the Shannon-wiener index is 1.33, and the Simpson index is 0.93,both of which are obviously higher than that of shrub-tree, shrub, and shrub-grass communities.%以贵州省普定县天龙山的喀斯特森林原生群落为研究对象，分析了群落的物种组成、外貌、结构。结果表明，该群落中共有26科33属40种植物；外貌主要由革质、单叶、中型叶和全缘叶为主的常绿高位芽植物景观所决定，结构分为乔木层、灌木层、草本层和层间植物层。植物多样性的香隆一威纳（Shannon-wiener）指数（H）为1．33，辛普森（Simpson）指数（D）为0．93，明显大于灌木林群落、灌丛群落和灌草群落的相应指标。