川西高原红毛五加群落生态学研究

目的:研究川西高原地区红毛五加群落特征,红毛五加在群落中的地位与适应性。方法:采用群落生态学方法调查不同红毛五加样地植被组成、红毛五加丛数与无性分株数,计算各物种重要值、各样地生物多样性指数,统计不同群落生活型谱。采用卡方检验分析红毛五加对群落内主要灌木物种的依存度。结果:红毛五加生境的群落类型可分为3类,不同生境类型中红毛五加种群数目差异较大,红毛五加与群落中主要灌木物种不呈显著性种间关联。结论:红毛五加种群生长对光照因子敏感,红毛五加可能具备单一种群栽培的生物学特性。

Community ecology of Acanthopanax giraldii in west Sichuan plateau

Objective : To study the community characteristics of Acanthopanax giraldii and its role and adaptability in the community. Method: The methods of community ecology were used to investigate vegetation composition in different sample plots and the number of the clumps and clonal ramets. The importance value of species and biodiversity index of each plot was calculated. The life form spectra in different community were counted. The chi-square test was applied to analyze the dependence degree of A. giraldii to other main shrub species in the community. Result : The investigation had showed that A. giraldii community could be divided into three types. The number of A. giraldii population in each type had great difference. Statistical analysis had shown that there's no correlation between the growth of A. giraldii with biodiversity and no significant interspecific association between A. giraldii and other main shrub species in the community yet. Conclusion : The population growth of A. giraldii was sensitive to Sunshine. A. giraldii maybe has the biological characteristics for artificial planting as a single population.