干旱区研究

干旱区研究 ›› 2011, Vol. 27 ›› Issue (1): 83-87.

• 生物及其生理生态 • 上一篇    

准噶尔盆地东南缘天然更新梭梭苗期动态生命表及生存分析

 刘国军1,2, 张希明1, 李建贵3, 吴俊侠1,2, 魏疆4, 李剑凌5, 王学文5   

    1. 中国科学院 新疆生态与地理研究所，新疆 乌鲁木齐 830011
    2. 中国科学院 研究生院，北京 100039
    3. 新疆农业大学 林学院，新疆 乌鲁木齐 830052
    4. 乌鲁木齐市天山区 经济发展改革委员会，新疆 乌鲁木齐 830002
    5. 奇台县林业局，新疆 奇台 831800
  • 收稿日期:2009-01-12 修回日期:2009-04-20 发布日期:2011-09-06
  • 通讯作者: 张希明.E-mail:zhxm@ms.xjb.ac.cn
  • 作者简介:刘国军（1976-），男，新疆昌吉人，博士生，主要从事植物生理生态、种群生态学方面研究.E-mail:lgjs96@sohu.com
  • 基金资助:

    国家自然科学基金项目(30760200，30870472）资助

Analysis on Dynamic Life Table of Natural Haloxylon ammodendron at Seedling Stage in the Southeastern Marginal Zone of the Junggar Basin

LIU  Guo-Jun1,2, ZHANG  Xi-Ming1, LI  Jian-Gui3, WU  Jun-Xia1,2, WEI  Jiang4, LI  Jian-Ling5, WANG  Xue-Wen5   

    1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
    2. Graduate University,  Chinese Academy of Sciences, Beijing 100039, China
    3. College of Forestry, Xinjiang Agricultural University, Urumqi 830052, China
    4.  Economy and Development Reform Committee of Tianshan District, Urumqi 830002, China
    5.  Forestry Bureau of Qitai County, Qitai 831800, Xinjiang, China
  • Received:2009-01-12 Revised:2009-04-20 Published:2011-09-06

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摘要： 运用动态生命表方法，观察和分析了准噶尔盆地东南缘天然梭梭(Haloxylon ammodendron)幼苗生长动态。结果显示：梭梭当年生幼苗存在两个存活率下降快、死亡率和致死力高的阶段。第一阶段从4月1日至5月1日幼苗死亡率为69．9％。第二阶段为6月15日至7月15日，幼苗死亡率由79.1%增加到85.1%。早期生长阶段的高死亡率，是由于动物咬食和不利气候因素的影响；而后一阶段死亡率较高的原因，是由于浅层土壤水分下降所致。存活曲线属DeeveyⅢ型，表明幼苗早期个体死亡率较高，此阶段是幼苗天然更新的关键时期。幼苗期动态生命表的研究可以为梭梭天然更新及其管理措施的制定提供科学依据。

关键词: 动态生命表, 天然更新, 幼苗, 种群, 梭梭, 准噶尔盆地, 新疆

Abstract: Haloxylon ammodendron inhabits along the southeastern marginal zone of the Junggar Basin in Xinjiang. In this paper, the developmental processes of natural population of H. ammodendron are studied with the means of the dynamic life table. The results show that there are separately two peak stages of rapid drop of survival rate and high mortality rate of H. ammodendron seedlings. In which the mortality rate of H. ammodendron seedlings at the first stage from April 1 to May 1 is as high as 69.9%. At the latter stage from June 15 to July 15, the high mortality rate is caused by disadvantageous climatic conditions and eating by animals in the early growth season, but it is caused by the decrease of moisture content in shallow soil layer. The survival curves of H. ammodendron seedlings belong to the pattern of Deevey Ⅲ, which indicates that the mortality rate of H. ammodendron plants is high at the early seedling stage, but the early seedling stage is a key period for the natural regeneration of H. ammodendron seedlings. The study results of dynamic life table at the seedling stage can provide the scientific basis for the natural regeneration of H. ammodendron seedlings and working out the management measures.

Key words: dynamic life table, the Junggar Basin, seedling, population, Haloxylon ammodendron

中图分类号: 

  • Q948