【摘要】 以南澳岛台湾相思林不同生境梯度的种群作为一元资源位,共选取8个资源位进行调查,计测台湾相思林主要种群的生态位宽度、重叠和相似性比例。结果表明,台湾相思林种群各种的生态位宽度差别明显,重要值大的种生态位宽度基本较大,种群物种利用资源的相似程度普遍较小;而台湾相思与生态位较宽的树种马尾松、鸭脚木、中华楠、潺槁树等生态位相似程度较大,对生境有一定相似的要求,重叠值也偏高,易形成混交林。其结果对南澳的台湾相思林分及水源涵养林的生态学研究及生产实践有指导意义。更多还原

【Abstract】 Resources position by different habitat gradient populations were taken according to the investigation data of major forest group and plant multiplicity in Nan’ao Island.Total eight resource positions were selected to explore the niche breadth,overlap and proportional similarity of major population of Acacia confusa forest.The results showed that the difference of niche breadth among populations was significant.The larger the populations,the more important the niche breadth they have,while the similarity degree of using resources was generally small.The niche proportional similarity among Acacia confusa and the species with broad niche breadth was much greater,such as Pinus massoniana,Schefflera octophylla,Phoebe bournei and Litsea glutinosa.They held the same similar requirements to the habitat and formed the mixed forest easily because of high niche overlap.The results had instructive importance to ecological research and productive practice of Acacia confusa forest as well as water conservation forest in Nan’ao.更多还原