威海市区黑松林群落分析的研究

根据威海市区黑松林的调查结果,分析了该群落的组成和结构特征。在11500m2的样地里有维管束植物105种,它们隶属于39科89属,其中被子植物37科;裸子植物1科;蕨类植物1科。该群落以单种科和寡种科占绝大多数,单种属有75种,占总数的71%,种数大于2的有13科,占总数的33%。该群落分为乔木层、灌木层及草本层3个层次,乔木层主要以黑松Pinusthunbergli、麻栎QuercusacutissimaCarr.等种类组成,灌木层主要以麻栎组成,草本层种类较少,以禾本植物为主。该群落中、高位芽植物占优势,缺乏隐芽植物。叶型以中、小型叶为主,缺乏大型叶植物。TWINSPAN将115个样方分为11个群落类型。调查结果表明本地区黑松林群落结构简单,不同黑松林群落结构差异较小,且物种丰富度低,是人为干扰强烈所致。

Community analysis of the Pinus thunbergli forest at Weihai

The vegetation survey on a secondary forest at Weihai,indicated that there were 105 species of vascular plants in 89 gen-era of 39 families in 115 plots.The community were vertically divided into tree layer,bush layer and grass layer,with some species in grass layer.The dominant species in tree layer were found as Pinus thunbergli and Quercus.acutissima.The species in bush layer were found as Quercus.acutissima and Quercus glandulifera var.brevipetiolata Nakai.Some species of Gremineae superseded the grass in grass layer.The Mesophanerophytes and Microphanerophytes were found having high percentage,and Geophytes were not found in the species life form of the community.The Mesophyll and Microphyll had high percentage in leaf-size class spectrum of the community,and Macophyll were not found.11community types were classified y TWINSPAN.The survey indicated that the community structure of Pinus thunbergli is simple,and the difference among different communities was low,which likely resulted from the intensive human disturbance in the area.