雾灵山自然保护区亚高山草甸植物群落结构研究

通过对雾灵山亚高山草甸植物群落基本特征的研究，发现在调查所涉及的52种植物中，大叶章、硬质早熟禾、地榆、藁本、双花堇菜、细叶藁本、披针叶苔草以及细叶苔草等植物的重要值较高，在群落中占据明显优势。群落的Simpson指数为11．75；Shannon-Wiener指数为4．19；PIE指数为0．91。以这3个指数为基础的群落均匀度指数分别为0．17，0．69，0．93。从总体来看，群落的生态优势度指标偏高，而物种多样性指数偏低。瑙基耶尔生活型谱分析得到以下结果：高位芽和地上芽植物各1种，分别占总种数的1．9％，地面芽植物和隐芽植物占绝对多数，分别为31种和16种，占总数的59．62％和30．77％；1a生植物有3种，占5．77％。表明该地区为夏季较短，冬季漫长，气候严寒而潮湿的温带气候特征。

Study on the Structure of the Subalpine Meadow Community of Wuling Mountain

It shows that the species of Calamagrostis purpurea,Poa sphondylodes,Carex lanceolata,Sanguisorba officinalis,Anemone cathayensis,Ligusticum sinense,Viola biflora ,Carex rigescens and Ligusticum tenuissimum have greater importance value than the others of the 52 species through the study on the basic characters of the subalpine meadow community of Wuling mountain.The Simpson index of the community is 11.75,Shannon wiener index is 4.19,and the PIE index is 0.91,as well as the species evenness indexes which based on the three forenamed indexes are 0.17,0.69,0.93 separately.It comes to the conclusion that the ecological dominance of the community is a little higher and the species diversity is less than normal.The life form spectrum analysis shows that hemicryptophyte predominates absolutely in the community which processes 31 species.Cryptophyte,which processes 16 species,is secondly to hemicryptophyte.Therophyte is less,there are 3 species belong to it.Phaenerophyte and chamaephyte are the least,they have only 1 species separatly.The ratio of them in the community are 59.62%,30.77%,5.77%,1.92% and 1.92% independently.This kind of life form spectrum reflected the special environment and the local climate.And the result is consistent with the conclusion of Raunkiaer.