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中国沙漠 ›› 2021, Vol. 41 ›› Issue (2): 129-137.DOI: 10.7522/j.issn.1000-694X.2020.00103

• • 上一篇    下一篇

古尔班通古特沙漠沙丘主要灌木的种群数量动态

李功麟1(), 张定海1(), 张志山2, 胡宜刚2, 黄磊2, 路丽宁1   

  1. 1.甘肃农业大学 理学院 数量生物研究所,甘肃 兰州 730070
    2.中国科学院西北生态环境资源研究院 沙坡头沙漠研究试验站,甘肃 兰州 730000
  • 收稿日期:2020-07-16 修回日期:2020-09-23 出版日期:2021-03-20 发布日期:2021-03-26
  • 通讯作者: 张定海
  • 作者简介:张定海(E-mail: zhangdh@gsau.edu.cn
    李功麟(1995—),男,山东聊城人,硕士研究生,主要从事应用统计学研究。E-mail: gonglinli1@163.com
  • 基金资助:
    国家自然科学基金项目(41661022);甘肃农业大学盛彤笙创新基金项目(GAU-CX1121);甘肃农业大学学科建设专项基金(GAU-XKJS-2018-144)

Population dynamics of main sand-fixing shrubs in the Gurbantunggut Desert

Gonglin Li1(), Dinghai Zhang1(), Zhishan Zhang2, Yigang Hu2, Lei Huang2, Lining Lu1   

  1. 1.Center for Quantitative Biology,College of Science,Gansu Agricultural University,Lanzhou 730070,China
    2.Shapotou Desert Research and Experimental Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2020-07-16 Revised:2020-09-23 Online:2021-03-20 Published:2021-03-26
  • Contact: Dinghai Zhang

摘要:

种群数量动态的研究是认识种群的生存现状及发展动态的前提。通过对古尔班通古特沙漠固定沙丘、半固定沙丘和流动沙丘上主要固沙灌木的样地调查,分析了固沙灌木的年龄结构,建立了3种沙丘上固沙灌木的静态生命表和存活曲线。结果表明:(1)固沙灌木的存活个体数呈逐级递减的趋势,幼龄个体占有很高的比例;固定沙丘上梭梭(Haloxylon ammodendron)呈现Ⅰ型存活曲线,种群退化,白梭梭(Haloxylon persicum)呈现Ⅱ型存活曲线,种群稳定;(2)半固定沙丘上白梭梭呈Ⅱ型存活曲线,种群相对稳定;沙拐枣(Calligonum mongolicum)和油蒿(Artemisia ordosica)均呈现Ⅰ型存活曲线,种群处于退化状态;(3)流动沙丘上沙拐枣呈现Ⅲ型存活曲线,种群有较大的增长潜力,白梭梭呈现出Ⅱ型存活曲线,种群相对稳定,油蒿呈现出Ⅰ型存活曲线,种群处于不稳定的退化状态。

关键词: 古尔班通古特沙漠, 种群数量动态, 生命表, 存活曲线

Abstract:

The study of population dynamics is a prerequisite for understanding the current situation of population survival and development dynamics. In this paper, the age structure of sand-fixing shrubs was analyzed and the static life table and survival curve were established based on our survey of the sand-fixing shrubs under three types of sand dunes (i.e. the fixed sand dunes, the semi-fixed sand dunes and the mobile sand dunes) in the Gurbantunggut Desert. We developed the following conclusions: (1) The survival number of sand-fixing shrubs showed a gradual decrease with age-class and high proportion of sand-fixing shrubs population is young individuals in three habitats. (2) On fixed sand dunes: the population survival curves of Haloxylon ammoolenelron was close to Deevey-Ⅰ type which indicated that its population was degonerating; Haloxylon persicum population was close to Deevey-Ⅱ type survival curve, the population was in a dynamic and stable state. (3) On semi-fixed sand dunes: H.persicum belong to Deevey-Ⅱ type survival curve, its population in a relatively stable state; Calligonum mongolicum and Artemesia ordosica all belong to Deevey-Ⅰ type survival curve, which shows that these populations were in a degraded state. (4) On mobile sand dunes: C.mongolicum population presented Deevey-Ⅲ type survival curve, which had great growth potential; H.persicum population presented Deevey-Ⅱ type survival curve, which shows that the population was in a relatively stable state; A.ordosica population presented Deevey-Ⅰ type survival curve, which indicates that the populations was in unstable state of degradation.

Key words: Gurbantunggut Desert, population dynamics, life table, survival curve

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