摘要
小叶章（Ｄｅｙｅｕｘｉａａｎｇｕｓｔｉｆｏｌｉａ）为三江平原的代表植物，也是优良的饲用植物，文章应用分形理论的方法，探讨了三江平原典型草甸小叶章种群地上生物量与株高的关系，揭示其地上生物量的积累和空间分布规律及生长过程。结果表明：两者之间存在分形特征，具有自相似规律。在６～９月其分形维数Ｄ值分别为１１６９、１６７４、２０６５、１８４３；在整个生长季其Ｄ值为１７３０。说明小叶章种群生物量积累及其空间分布是一个分形生长过程，服从Ｄ值规律增长。其成熟植株可看做是生长初期植株经生长放大而形成的。
Deyeuxia angustifolia is a dominant species in marsh meadow on Sanjiang plain. The relationship between aboveground biomass and plant height of Deyeuxia angustifolia population was studied by using Fractal Theory. The results show that there is a fractal relationship between aboveground biomass and plant height, having the law of selfsimilarity. The fractal dimension D is 1 169, 1 674, 2 065 and 1 843 from June to September. During the whole growing season, the fractal dimension D is 1 730. Aboveground biomass accumulation and its distribution in space of Deyeuxia angustifolia population are a fractal growth process, conforming to the law of D value increasing, the mature plants are regarded as the result of the amplification of seeding growth in the early period.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1998年第3期16-19,共4页
Journal of Northeast Forestry University
基金
黑龙江省自然科学基金
关键词
小叶章
种群
地上生物量
株高
分形维数
Deyeuxia angustifolia population
Aboveground biomass
Plant height
Fractal dimension
