不同生境中淫羊藿克隆构型和分株种群特征

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Abstract

In order to explore the conservation strategy and resource acquisition of Epimedium brevicornum.The variations of clonal architecture and ramet population characteristics of E.brevicornum growing at the open land of forest edge,forest and forest understory were studied by field investigation and laboratory analysis.The influences of environmental factors on the clonal architecture and ramet population characteristics were analyzed.The results indicated that the branching intensity,spacer length,branching height,length of rhizome and ramet population density were different among three habitats.There were signficant regressive relationships between them and relative light intensity,soil water content of habitats.It implied that the relative light intensity and soil water content of habitats mainly influence the clonal growth of E.brevicornum.The clonal growth depended on the rhizome under ground,and has morphological plasticity.These results were discussed in the context of resource acquisition strategy by clonal plants.The response of clonal architecture and ramet population characteristics to resource heterogeneity has important ecological implication.Protect the rhizome under ground and reduce the disturbance by human being,it's an effectual way to keep the continuable utilization of E.brevicornum which lived in field.

Key words： Epimedium brevicornum Clonal architecture Ramet population

Received: 25 August 2005

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	Articles by authors
	FENG Tu
	LI Yun-xiang
	YANG Zi-song
	QIAN Bao-ying

Cite this article:

FENG Tu,LI Yun-xiang,YANG Zi-song, et al. Clonal architecture and ramet population characteristics of Epimedium brevicornum in different habitats[J]. , 2005, 24(4): 298-303.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2005/V24/I4/298

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