武陵山区蛇足石杉居群的分布与生境特征

The distribution and habitat characteristics of Huperzia serrata populations in Wuling Mountain range

采用田野调查法对分布于武陵山区蛇足石杉(Huperzia serrata)居群进行了较全面的研究,发现该种主要分布于原生常绿阔叶林、各种次生林及人工林下的荫湿生境,在群落中处于从属地位.分析了影响蛇足石杉分布的生物学因素,以及导致其濒危的主要原因,并提出相应的保护策略.

We carried out field surveys on the populations of Huperzia serrata distributed in Wuling Mountain range.This species was found to be dominated by other species in different forest communities（i.e.primary evergreen broad-leaved forest,various secondary communities and planted forests）.Although the types of concomitant community of H.serrata varied,the habitats characterized by shade,damp,mossy and acid soil were found to be consistent.The paper analyses the key biological factors which effect distribution,as well as the main factors responsible for the endangerment of H.serrata,and puts forward protection countermeasures.