【摘要】 应用邻接格子法研究了濒危植物明党参(ChangiumsmyrnioidesWolff)及伞形科另一种药用植物峨参(Anthuiscussylvestris(L.)Hoffm.)不同生境的种群分布格局.明党参的格局规模在0.64m2的区组上均为集群分布,在其余4个小组上分布格局存在差异;峨参在所研究的格局规模上均为集群分布,且在0.04m2上集聚度最大.峨参个体密集度大,还有无性繁殖,因而在受到采挖时可以较快恢复;而明党参密集度低,生长时间长,更新速度慢,受到采挖和人类土地利用干扰后种群不易恢复,可能是其日益稀少和濒危的原因之一.更多还原

【Abstract】 The distribution patterns of endangered species Changium smyrnioides Wolff and another species Anthriscus sylvestris (L.) Hoffm.,that is non-endangered,were investigated in different habitats in Hangzhou by using grid sampling.Both species belong to the same family Umbellaceae.Results showed that the distribution pattern of C.smyrnioides was contagious distribution at scales of 0.64 m2 ,and differed from other 4 small scales considerably;while the distribution pattern of A.sylvestris was contagious in all scales measure,and the most clumped distribution appeared in 0.04 m2.Probably due to the high density and clone,A.sylvestris resumed easily when it was excavated.C.smyrnioides with low density must spend a long time to grow up,therefore it regenerated slowly and resumed difficultly when it was excavated or its habitat was occupied by human.That may be one of the reasons that the population of C.smyrnioides decreased gradually and endangered.更多还原