草地学报

草地学报 ›› 2016, Vol. 24 ›› Issue (2): 302-308.DOI: 10.11733/j.issn.1007-0435.2016.02.009

• 研究论文 • 上一篇    下一篇

春季休牧后放牧强度变化对短花针茅草原植物种群种间关系的影响

吕世杰1, 吴艳玲2, 刘红梅3, 卫智军4   

  1. 1. 内蒙古农业大学理学院, 内蒙古 呼和浩特 010018;
    2. 内蒙古师范大学生命科学与技术学院, 内蒙古 呼和浩特 010022;
    3. 内蒙古自治区林业科学研究院, 内蒙古 呼和浩特 010010;
    4. 内蒙古农业大学生态环境学院, 内蒙古 呼和浩特 010019
  • 收稿日期:2014-12-05 修回日期:2015-05-04 出版日期:2016-04-15 发布日期:2016-06-06
  • 通讯作者: 吴艳玲
  • 作者简介:吕世杰(1978-),男,内蒙古赤峰人,硕士,讲师,主要从事生物统计学和数量生态学研究,E-mail:lshj123@163.com
  • 基金资助:

    内蒙古自然科学基金项目(2014BS0326);内蒙古师范大学高层次人才科研启动项目(2013YJRC016)资助

Effect of Grazing Intensity Changes on Population Inter-specific Relationship of Stipa breviflora Steppe after Banning in Spring

LV Shi-jie1, WU Yan-ling2, LIU Hong-mei3, WEI Zhi-jun4   

  1. 1. College of Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China;
    2. College of Life Science, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China;
    3. Inner Mongolia Academy of Forestry Science, Hohhot, Inner Mongolia 010010, China;
    4. College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010019, China
  • Received:2014-12-05 Revised:2015-05-04 Online:2016-04-15 Published:2016-06-06

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摘要：

为探讨春季休牧后放牧对短花针茅(Stipa breviflora)草原植物种群种间关系的影响,于2013年8月对苏尼特右旗荒漠草原进行调查研究,试验设2种放牧方式,分别为春季休牧+夏季重牧+秋季适牧(SA1)和春季休牧+夏季适牧+秋季重牧(SA2),分析物种数、物种频度差异,种对关联及群落总体关联性,得到如下结果:春季休牧较对照(全年禁牧)能够显著增加单位面积的物种数,且SA1>SA2;不同植物种群出现频率对春季休牧后不同放牧方式的响应存在显著差异(P < 0.05)。春季休牧后,主要植物种群短花针茅和无芒隐子草(Cleistogenes songorica)主要表现为无关联性,短花针茅与碱韭(Allium polyrhizum)主要表现为负关联性。无芒隐子草和碱韭受春季休牧影响,种间关联由对照处理的正关联转为负关联,且负关联程度SA1较SA2强。春季休牧后,无论放牧强度变化如何,正关联种总数较对照均减少,但物种总体种间亲和作用增加。

关键词: 休牧, 放牧强度, 短花针茅草原, 种间关联

Abstract:

The paper set up 2 kinds of grazing intensities, banning grazing in Spring + heavy grazing in Summer + moderate grazing in Autumn (SA1) and banning grazing in Spring + moderate grazing in Summer + heavy grazing in Autumn(SA2)in Sonid Youqi Inner Mongolia in August 2013. In order to explore the impact of changes in grazing intensity after banning grazing on population interspecific relationship in Stipa breviflora desert steppe, species numbers, differences in species frequency, species association, and overall community association were analyzed. The results showed that compared with the control area (banning grazing all years), banning grazing in Spring can significantly increase the species numbers of per unit area and the species number of SA1 was bigger than SA2. There was significant difference among grazing treatments on plant populations frequency (P < 0.05). Stipa breviflora and Cleistogenes songorica showed no relevance while Stipa breviflora and Allium polyrhizum showed negative correlation after banning grazing in Spring. By banning grazing In Spring, the relationship between Cleistogenes songorica and Allium polyrhizum could turned the positive association appeared in control area into a negative association and the transition of SA2 was stronger than SA1. Banning grazing in the spring caused a decreased positive species correlation. However, the overall species affinity interaction increased no matter how grazing intensity changed.

Key words: Banning, Grazing intensity, Stipa breviflora steppe, Inter-specific association

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