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生态学杂志 ›› 1998, Vol. ›› Issue (3): 16-19.

• 研究报告 • 上一篇    下一篇

沙地云杉种群种子雨的时空分布规律

邹春静1, 徐文铎1, 刘广田2   

  1. 1. 中国科学院沈阳应用生态研究所, 110015;
    2. 内蒙古白音敖包自然保护区, 025375
  • 收稿日期:1996-08-12 修回日期:1996-11-01 出版日期:1998-06-10
  • 基金资助:
    国家自然科学基金

The Spatial-Temporal Distribution of Seed Rain in Picea Mongolica Population

Zou Chunjing1, Xu Wenduo1, Liu Guangtian2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Baiyinaobao Natural Preserve, Inner Mongolia Autonomous Region, Baiyinaobao 025375
  • Received:1996-08-12 Revised:1996-11-01 Online:1998-06-10

关键词: 大型海藻, 附着, 附着基, 暴波

Abstract: The flux of seed into and out of a unit of habitat determmines the potential population of that habitat. The process is called seed rain. Based on the study of spatial temporal heterogeneity of seed rain in Picea mongolica population, we found that its seed rain is a spatial process, that is to say, the seed rain intensity(SRI)is maximum in the distance 5-10 meters from the mother tree and it is difference in different directions. SRI is maximum with wind, then across wind and finally against wind. Furthermore, the seed rain is a temporal process too. The period of seed rain is about two weeks. SRI is maximum in 2-5 days and its spatial heterogeneity is as former. Based on the seed characters and dispersibility of Picea mongolica, we estimate that a single mature tree(DBH=50cm, Height=17m)can produce 1.6kg seed and 40kg fresh cores.

Key words: macroalgae, attachment, substratum,  , wave exposure.