粗梗水蕨种群特征和群落的物种多样性调查

Investigation of Population Characteristics and Species Diversity of Community of Ceratopteris pteridoides

研究了湖北省蕲春县的濒危水生植物粗梗水蕨种群和群落的基本特征。结果表明种群面积为40～50 m2,植株数为1 000～1 500株,频度和盖度分别为100%、40%,为小种群,与粗梗水蕨相伴生的物种主要有6科7属7种,反映了小种群及人类活动可能是加剧该种群濒危的主要原因,为采取有效措施对其加以更好地保护提供了理论基础。

The paper was to study the basic characteristics of community and population of endangered aquatic plant Ceratopteris pteridoides in Qichun County of Hubei Province.The result showed that the population area was 40-50 m2,plant number was about 1 000-1 500,and the frequency and coverage were 100% and 40% respectively,so it was small population.The species concomitant with C.pteridoides mainly included 7 species,belonging to 7 genera and 6 families.It reflected that small population and human activities might be the major reason aggravating the population,which laid theoretical basis for taking effective measures to provide better protection for the population.