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应用生态学报 ›› 1997, Vol. 8 ›› Issue (5): 500-504.

• 研究论文 • 上一篇    下一篇

3种禾草圆锥花序小穗及小花分布格局的比较

杨允菲1, 傅林谦2   

  1. 1. 东北师范大学国家草地生态工程实验室,长春 130024;
    2. 中国农业科学院畜牧研究所,北京 100094
  • 收稿日期:1995-10-27 修回日期:1996-08-23 出版日期:1997-09-25 发布日期:1997-09-25
  • 基金资助:

    国家“八五”科技攻关(85-11-02-04);国家自然科学基金(9389009-I)

Distribution patterns of spikelets and florets in conical spikes of three grass species

Yang Yunfei1, Fu Linqian2   

  1. 1. National Laboratory of Grassland Ecological Engineering, Notheast Normal University, Changchun 130024;
    2. Institute of Animal Husbandry, Chinese Academy of Agricultural Sciences, Beijing 100094
  • Received:1995-10-27 Revised:1996-08-23 Online:1997-09-25 Published:1997-09-25

摘要: 分析草芦、鸭茅、苇状羊茅3种圆锥花序禾草小穗及小花的分布格局,结果表明,3种禾草在各节位上的小穗、小花数量均适合于Weibull分布,随着节位序的增加均呈饱和型曲线增长.通过赋予各统计参数生物学涵义,从宏观上分析与揭示了有关生命现象与发展规律及其生物生态学机理.

关键词: 苇状羊茅, 圆锥花序, 小穗, 小花, 分布格局, 草芦, 鸭茅, 生态保护, 选择实验, 支付意愿, 随机效用理论, 条件价值评估法

Abstract: The distribution patterns of spikelets and forets in conical spikes of Phalaris arundinacea,Dactylis glomerata and Festuca arundinacea showed that their spikelets and florets on each node were in Weibull distribution,and all grew in saturation curves along with the increase of node order.By entrusting the statistical parameters with biological meanings,the relevant life phenomena,the development patterns and their biological and ecological mechanisms were analyzed and revealed macroscopically.

Key words: Phalaris arundinacea, Dactylis glomerata, Festuca arundinacea, Conical spike, Spikelet, Floret, Distribution pattern, ecological protection, random utility theory, choice experiment, contingent valuation method, willingness to pay