摘要
在异质生境中克隆生长使克隆分株处于不同的小生境中，从而将基株死亡风险以不同方式分摊。分摊有利于维持或提高基株适合度，因此，植物克隆生长被认为具有对小尺度生境异质性的生态对策性意义。拟一年生克隆草本Ｔｒｉｅｎｔａｌｉｓｅｕｒｏｐａｅａ对养分梯度的反应给出了基株风险分摊的实例。
As clonally growing in heterogeneous environments, a single genet may place its ramets in different microhabitats. In this process, mortality (risk) of the genet is spreaded. Risk-spreading makes a great contribution to maintenance of or even increase in genet fitness. Therefore, clonal growth was considered having adaptive value, particularly in fine-scale heterogeneity of environment. Responses of a pseudoannual clonal herb, Trientalis europaea, to a nutrient gradient provides an example of genet riskspreading. Meanwhile, a hypothesis on the relationship between the maintenance of ramet-between connection and the enviromental heterogeneity is proposed.
出处
《植物生态学报》
CAS
CSCD
北大核心
1996年第6期543-548,共6页
Chinese Journal of Plant Ecology
基金
国家自然科学基金
关键词
植物生态学
生境异质性
植物克隆生长
风险分摊
Environmental heterogeneity
plant clonal growth
Risk-spreading
Trientalis europaea
