Acta Agrestia Sinica

›› 2001, Vol. 9 ›› Issue (2): 106-109.DOI: 10.11733/j.issn.1007-0435.2001.02.006

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Effect of Management on the Fractal Relation Between Biomass and Height of Poa botryoides

LI Lian-fang1, WANG Pei2, YIN Fu-lu 3   

  1. 1. College of Biology, CAU, Beijing, 100094;
    2. Institute of Grassland Science, CAU, Beijing, 100094, China;
    3. Hongsongwa Grassland Natural Reserve, Weichang, 0684457, China
  • Received:2000-01-08 Revised:2000-12-07 Online:2001-05-15 Published:2001-05-15

管理对华灰早熟禾生物量及株高分形关系的影响

李连芳1, 王培2, 殷甫辂3   

  1. 1. 中国农业大学生物学院, 北京, 100094;
    2. 中国农业大学草地所, 北京, 100094;
    3. 围场红松洼国家级自然保护区管理处, 河北, 068457
  • 作者简介:李连芳(1963- ),男,讲师,生物学硕士,草业科学博士.1992年任教于中国农业大学生物学院,主要从事植物分类学及生态学的教学和科研工作,已发表科研论文10余篇,参编的著作及教材5部
  • 基金资助:
    本文由中国农业大学资助

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Abstract: By the use of methods of fractal geometry,the relation between aboveground biomass and height of Poa botryoides population were studied under the different managements in Hongsongwa Grassland Natural Reserve of China.The results show as follows:1)at any moment, the individuals of Poa botryoides population were similar each other in the accumulative rate of biomass;2)the increase of gradient is the law of accumulation of biomass of Poa botryoides population;3)during the growing season,the heterogeneity of biomass accumulation is obvious in experiment area,which indicates that graxing pressure can increase the complications of the fractal relation between biomass and height of that population;4)in buffer area,if grass is cutted once each year,the accumulative rate of biomass in that population do not be affected.

Key words: Poa botryoides, Biomass, Height, Fractal method

摘要： 在河北省围场县红松洼草原生态系统自然保护区研究管理条件对华灰早熟禾地上生物量与株高分形关系的影响.结果表明,华灰早熟禾生物量的积累规律具有自相似性特征.梯度生长是华灰早熟禾生物量积累的规律.在实验区,生物量与株高的分形关系在生长季节存在明显的差异,表明放牧压能增加华灰早熟禾生物量积累规律的复杂性.缓冲区每年割草1次对华灰早熟禾生物量和株高分形关系没有影响.

关键词: 华灰早熟禾, 生物量, 株高, 分形方法

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