井冈山自然保护区福建柏群落的研究

Studies on Fokienia hodginsii Community in Jinggangshan Nature Reserve

摘要:

对井冈山福建柏(Fokienia hodginsii)群落4个样地的物种组成、区系成分和物种多样性进行了统计和分析。结果表明: 该群落有维管植物32科43属59种, 其中蕨类植物有4科4属5种, 裸子植物3科3属3种, 被子植物25科36属51种。区系分析显示该植物区系起源古老, 地理成分复杂, 以温带性成分为主, 热带亚热带成分占有较大比例。群落为复层异龄结构, 类型有福建柏＋甜槠(Castanopsis eyrei)群落、福建柏＋猴头杜鹃(Rhododendron simiarum)＋甜槠群落。群落物种多样性指数较高, 各样地间多样性指数变幅不大；福建柏群落的4种多样性指数基本表现出相同的趋势, 福建柏群落物种多样性在群落不同层次的变化规律为: 灌木层＞乔木层＞草本层。

Abstract:

Species composition, flora analysis and species diversity features of 4 plots in Fokienia hodginsii community in Jinggangshan Nature Reserve, Jiangxi Province, were analyzed. The results showed that there were 59 species of vascular plants in Fokienia hodginsii community (including varieties), belonging to 32 families and 43 genera, in which the Pteridophyte accounted for 4 families, 4 genera and 5 species, the Gymnosperm 3 families, 3 genera and 3 species, and the Angiosperm 25 families, 36 genera and 51 species. The floristic analysis showed that the flora had come floristic constitents before Quaterary and retains many floristic element before Quaternary, the geographical element is complex, the temperate element dominanted, tropical and sub-tropical elements took larger proportion. Community of Fokienia hodginsii was many storied all-aged forest, community type was make up of Fokienia hodginsii and Castanopsis eyrei community, Fokienia hodginsii, Rhododendron simiarum and Castanopsis eyrei community. Fokienia hodginsii community had high species diversity index, which did not alter too much among plots, the variation patterns of species diversity of Fokienia hodginsii community were similar which ever the index was used. Generally, the order of the magnitude of species diversity was shrub layer＞tree layer＞herb layer.