江苏龙潭森林公园森林群落类型及植物组成分析

Analysis of the forest community types and plant constituents of Longtan Forest Park in Jiangsu Province

利用典型样地取样法,对江苏龙潭森林公园植被进行了调查,发现共有种子植物1 063种(变种),隶属于146科515属,其中,木本植物65科163属348种(变种),草本植物77科345属708种(变种)。依据优势种组成,可将森林植被分为7种次生林群落:松阔混交林、糙叶树-朴树-榉树林、青冈栎林、紫楠林、落叶栎林、枫香林和毛竹林群落;5种人工林群落:杉木林、国外松林、板栗林、茶林及毛竹林群落。与邻近宜兴地区森林资源相比,植被组成具有一定相似性和重叠性,但比位于北亚热带的南京紫金山、常熟虞山森林植物资源总量明显增加,丰富性增强。基于植被现状,对不同森林群落类型提出了相应合理林分改造措施,以提高森林群落的稳定性。

In virtue of typical sample area sampling method ,a systematic vegetation survey was conducted in Longtan Forest Park of Jiangsu .There were 1 063 species of seed plants , which belong to 146 families and 515 genera .With further analysis ,there were 348 species of w oody plants ,w hich belonged to 65 families and 163 genera ,and 708 species of herba‐ceous plants belonging to 77 families and 345 genera .According to the composition of domi‐nant species ,seven secondary forest communities were divided ,including pine and broad leaved forest ,A phananthe ,Celtis and Zelkova forest ,Cyclobalanopsis forest , Phoebe for‐est ,deciduous oak forest ,Liquidambar forest and Phyllostachys forest .There were five planted forest communities of Chinese fir forest ,foreign pine forest ,chestnut forest ,tea for‐est ,and bamboo forest .There existed some similarities and overlaps in forest resource type and quantity between Longtan Forest Park and adjacent Yixing area ,but the resources in Longtan Forest Park showed a higher total quantity and richness than Nanjing Zijinshan and Changshu Yushan ,which are located in the north subtropical region .Therefore ,some ra‐tional stand transformation and tending management were proposed so as to improve its com‐munity stability .