蝴蝶花无性系在不同光强度下表现结构的研究

本文以四川缙云山的克隆草本蝴蝶花为对象，对其在竹林和针阔叶混交林林窗地带不同的光变化生境中的表现结构进行了研究。经对蝴蝶花无性系小株的高度、基径、叶片数以及地上和地下生物量的统计分析，结果表明：从林窗→林缘→林下，随着光照强度的减弱，蝴蝶花的高度、基径和地上生物量相应减小，在林下达到最小，而地下生物量在林下却最大，叶片数目没有明显变化。文章分析和讨论了蝴蝶花所表现出的结构变化，并分别对株高和地上生物量与基径的关系拟合了回归方程。

THE PERFORMANCE STRUCTURES OF CLONAL HERB IRIS JAPONICA IN RESPONSE TO CHANGING LIGHT CONDITION

In this paper, the performance structures of clonal herb Iris japonica population in different changing light habitats in both bamboo forest and mixed needle broad leaved forest in Mt. Jinyun of Shichuan province have been studied. The data being statistically analyzed show significant differences in various habitats. From gap to edge to undergrowth, the ramet height, diameter and aboveground biomass decreases with the weakening of light intensity, but underground biomass is the highest in the undergrowth habitat, and there is not much variation of leaves number in various habitats. In addition, the results have been analyzed and discussed, regression equations of both ramet height and aboveground biomass to diameter have been established, and the correlation is obvious (r>90, t>0.01).