草地学报

草地学报 ›› 2016, Vol. 24 ›› Issue (4): 910-914.DOI: 10.11733/j.issn.1007-0435.2016.04.031

• 研究专报 • 上一篇    下一篇

羊草草甸草原刈割、施氮对物种多样性与生产力关系的影响

陈积山1, 张强1, 朱瑞芬1, 高超1, 董妍2, 邓波3   

  1. 1. 黑龙江省农业科学院草业研究所, 黑龙江 哈尔滨 150086;
    2. 黑龙江出入境检疫局, 黑龙江 哈尔滨 150001;
    3. 中国农业大学动物科技学院, 北京 100193
  • 收稿日期:2014-07-16 修回日期:2015-01-23 出版日期:2016-08-15 发布日期:2016-11-29
  • 作者简介:陈积山(1979-),男,甘肃古浪人,博士研究生,主要从事牧草栽培及草地管理,E-mail:gscjs2008@aliyun.cn
  • 基金资助:

    国家公益性行业（农业）科研专项（201303060）；黑龙江省农科院科技创新工程重点基金项目（ZD015）资助

Effects of Clipping and Fertilizing N on the Relationship between Diversity and Productivity of Leymus Chinensis Meadow

CHEN Ji-shan1, ZHANG Qiang1, ZHU Rui-fen1, GAO Chao1, DONG Yan2, DENG Bo3   

  1. 1. Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Science, Harbin, Heilongjiang Province 150086, China;
    2. Immigration and Quarantine Bureau of Heilongjiang, Harbin, Heilongjiang Province 150001, China;
    3. China Agricultural Universty, Beijing 100193, China
  • Received:2014-07-16 Revised:2015-01-23 Online:2016-08-15 Published:2016-11-29

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摘要：

本文通过控制试验研究了刈割次数与施氮梯度上羊草草甸草原群落中所有物种、响应物种、作用物种和共有物种的多样性变化与群落地上净初级生产力的关系。研究表明，刈割能增加物种多样性，并降低净初级生产力，而施氮的作用与前者相反。群落中全部物种的多样性变化受刈割影响较大，而作用物种的多样性变化受施氮影响较大；地上净初级生产力主要由少数影响生产力的响应物种和作用物种的多样性决定，而与大量共有物种的多样性无关。

关键词: 羊草草甸, 刈割, 施氮, 初级生产力, 物种多样性

Abstract:

Experiment was conducted in Leymus chinensis meadow using a split-plot design with clipping treatment as main plot and N fertilization as subplot. We observed that clipping and fertilization had opposite effects on species diversity, aboveground net primary productivity (ANPP), i.e., the former increased species diversity and decreased ANPP, while fertilization had opposite effects on them. Our results suggested that ANPP was mainly affected by the diversity of response species and effect species, and had no relationship with common species.

Key words: Leymus chinensis meadow, Clipping, Fertilizing N, Primary productivity, Species diversity

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