江苏云台山森林群落学特征研究

根据大量样地调查材料,用常规方法,对云台山森林群落组成、结构、分布、更新等进行探讨,分析其形成原因.结果表明:云台山森林群落的种类组成丰富,但优势种或优势种组不明显,物种重要值最高为48.27;种类组合多样、重现性低,典型样地中恒有度0.6以上的树种仅3种;云台山森林层次结构较为完整,乔、灌、草各层间分化清晰,植物群落分布的连续性明显.形成的主要原因与云台山森林的小生境、特殊的地理位置及低山谷地的地形条件等因素有关.

Study on Forest Community Characteristics in Mount Yuntai Area, Jiangsu Province

The community constitution,structure,distribution,regeneration and the formation reasons of the forest in Mount Yuntai area,Jiangsu Province,were studied by conventional approaches on the basis of analyzing large quantity of data obtained from plot investigation.The results showed that there were no obvious predominant species,nor the predominant species groups in the studied area though the composition of the forest community was plentiful.The maximum figure of the important value of species was 48.27.There were many forms of species combination,but the reappearance level of the combinations was quite low.Only 3 tree species had constant-rate value above 0.6 in the typically sampled plots.There was complete forest structure in Mount Yuntai area,and the hierarchy of arbor,shrub and the grass was clear and the continuity of plant community distribution was evident.The habitat,the special geographic location and the topographical conditions in the valley and around the low Mount Yuntai are the main reasons to cause above results.