%0 Journal Article
%T Dynamic Analysis and Diversity of Plant Life Cycle Forms<br>植物生活史型的多样性及动态分析
%A ZU Yuan-Gang
%A <br>祖元刚
%J 生态学报
%D 2002
%I 
%X This paper mainly discussed the basic definition and types of plant life cycle form. According to the plant ecological amplitude, fitness and energy allocation patterns, plant life cycle form could be classified as three basic forms (V form: vegetative growth form; S form: sexual reproduction form and C form: clone reproduction form) and six transitional forms (VS form, SV form, CS form and SC form, VC and CV form) which combine features of three basic forms. By trading off the energy allocation among different plant cycle phases, plants optimize their energy utilization and adopt a specific plant life cycle form with the characteristics of best reproductive and survival benefits as well as maximum fitness to habitats. Moreover, our results indicate that primary metabolism and secondary metabolism might be closely correlated with plant life cycle forms and their transformation between forms. Generally speaking, primary metabolite is mainly used in vegetative growth, but secondary metabolite may be mainly used to promote propagation and over come environmental stress. The plant life cycle form of one specific species could transform from one form to another to adapt to the changing environment. This transformation process is characterized as a dynamic process and form the spectrum of plant life cycle forms of this species. The developing mechanism of plant life cycle form is also discussed in this paper. The size of an environmental sieve (resource status and disturbance degree of habitat) results in the selective pressure. According to the pressure intensity, plants optimize their energy allocation with regard to the need of their different organs by way of producing primary and secondary metabolites, These result in the adaptive strategy and ecological amplitude of one specific species. Finally, fitness manifested by the interaction between the habitat and the adaptive strategy can be characterized as plant life cycle form. Furthermore, this paper also discusses the transformation mechanism between the plant life cycle forms. Because each species has its specific habitat type, selective pressure, metabolite and adaptive strategy, habitat also has a transformational change with the continuous change in spatial and temporal scales. These result in the formation of transformation types of habitat. These kinds of habitat enhances the transformational changes in selective pressure, metabolite and adaptive strategy, which form their transformation types, respectively. As a result, the inter\|transformation processes of plant life cycle forms (so\|called transformation types) were observed. The spectrums of plant life cycle forms of five species including Rhodiola sachalinensis were exemplified to analyze the dynamic features of these spectrums and their possible correlation to the community characteristics. Our results indicated that: First,plants mainly with a V life cycle form generally have a stable population because of their relative big vegetati
%K plant life cycle form
%K spectrum of plant life cycle form
%K ecological amplitude
%K fitness<br>植物生活史型
%K 多样性
%K 动态分析
%K 生态幅
%K 适合度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=C616ABE1E8640EC3&yid=C3ACC247184A22C1&vid=BC12EA701C895178&iid=708DD6B15D2464E8&sid=EF31684301C70518&eid=F1D2609F60C74576&journal_id=1000-0933&journal_name=生态学报&referenced_num=22&reference_num=21