草地学报

›› 2011, Vol. 19 ›› Issue (6): 898-903.DOI: 10.11733/j.issn.1007-0435.2011.06.002

• 研究论文 • 上一篇    下一篇

新疆伊犁2种生境大拂子茅种群年龄结构研究

张维1,2, 贾娜尔·阿汗1, 赵玉1, 杨允菲2, 李建东2   

  1. 1. 伊犁师范学院化学与生物科学学院, 新疆伊宁835000;
    2. 东北师范大学草地科学研究所植被生态科学教育部重点实验室, 吉林长春130024
  • 收稿日期:2011-06-10 修回日期:2011-10-10 出版日期:2011-12-15 发布日期:2012-07-09
  • 通讯作者: 杨允菲,E-mail:yangyf@nenu.edu.cn
  • 作者简介:张维(1973- ),男,四川南充人,讲师,博士研究生,主要从事植物种群生态学研究,E-mail:zhangw891@nenu.edu.cn
  • 基金资助:
    国家自然科学基金项目(31160072)(30470272);新疆高校科研计划项目(XJEDU2008I36);伊犁师范学院科研项目(200917)资助

Population Age Structures of Calamagrostis macrolepis under Two Habitats in Yili of Xinjiang

ZHANG Wei1,2, JIA Naer·ahan1, ZHAO Yu1, YANG Yun-fei2, LI Jian-dong2   

  1. 1. School of Chemistry and Bioscience, Yili Normal College, Yining, Xinjiang 835000, China;
    2. Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun, Jilin Province 130024, China
  • Received:2011-06-10 Revised:2011-10-10 Online:2011-12-15 Published:2012-07-09

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摘要： 通过单位面积取样的方法,测定分析了新疆伊犁2种生境下大拂子茅(Calamagrostis macrolepis)种群分蘖株、根茎和潜在种群的年龄结构,旨在探索大拂子茅种群对不同生境条件的响应策略,揭示大拂子茅种群的繁殖潜力。结果表明:大拂子茅种群分蘖株在2种生境下均由营养分蘖株和生殖分蘖株组成;分蘖株、根茎、冬性苗和芽均有4个龄级;根茎分蘖节最多繁殖4个世代,最多可存活5个生长季;分蘖株数量和生物量为1龄>2龄>3龄>4龄;芽数量为0龄>1龄>2龄>3龄,以0龄芽占绝对优势;根茎生物量、冬性苗数量在2种生境样地也具有低龄级相对占优势的结构特征。2种生境下大拂子茅种群分蘖株、根茎、冬性苗和芽等构件均呈增长型年龄结构。

关键词: 大拂子茅, 分蘖株, 根茎, 冬性苗, 芽, 年龄结构

Abstract: Age structures of tillers,rhizomes and potential populations of Calamagrostis macrolepis populations under two habitats in Yili of Xinjiang were measured and analyzed by the unit area sampling method.The objective was to explore response strategies of Calamagrostis macrolepis populations on different habitat conditions,and to reveal the reproductive potential of Calamagrostis macrolepis populations.Results showed that the tillers of Calamagrostis macrolepis populations consisted of reproductive tillers and vegetative tillers under both habitats.Tillers,rhizomes,winterness tillers and buds all had four age classes.Tiller nodes of rhizomes could reproduce a maximum four generations and survive five growing seasons.The number and biomass of tillers of every age class were ranked as 1st>2nd>3rd>4th,while the number of buds of every age class was ranked as 0>1st>2nd>3rd,and the buds of 0 age class had absolute dominance.The biomass of rhizomes and the number of winterness tillers under both habitats had the structure characteristics of younger age classes as dominant position.Tillers,rhizomes,winterness tillers and buds under both habitats all showed expansive age structures.

Key words: Calamagrostis macrolepis, Tiller, Rhizome, Winterness tiller, Buds, Age structure

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