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• 研究报告 • 上一篇    下一篇

五台山蓝花棘豆群落优势种群的种间关系分析

闫美芳1;上官铁梁2;张金屯3;曹杨1   

  1. 1山西大学黄土高原研究所, 太原 030006;2山西大学环境与资源学院, 太原 030006;3北京师范大学生命科学学院,北京 100875
  • 收稿日期:2005-05-08 修回日期:2005-07-25 出版日期:2006-04-10 发布日期:2006-04-10

Interspecific association and correlation of dominant species in Oxytropis coerulea community in Wutai Mountains

YAN Meifang1;SHANGGUAN Tieliang2;ZHANG Jintun3;CAO Yang1   

  1. 1Loess Plateau Research Institute,Shanxi University,Taiyuan 030006, China;2School of Environment and Resources,Shanxi University,Taiyuan 030006, China;3School of Life Science,Beijing Normal University,Beijing 100875, China

  • Received:2005-05-08 Revised:2005-07-25 Online:2006-04-10 Published:2006-04-10

摘要: 应用2×2列联表的χ2检验和Spearman秩相关系数研究了五台山蓝花棘豆群落(Oxytropis coerulea community)的种间关系,分别测定了18种植物,共153个种对的种间关联(或相关)。结果表明,χ2检验仅有6个种对为显著或极显著正(或负)关联,而相关系数表明有10个种对呈显著正相关,8个种对呈显著负相关。整体来看,大多数种群之间关系松散。种群之间正关联或正相关主要是由于它们具有相近的生物学特性,对生境的需求相似;而种对间的负关联和负相关,则主要是由于它们具有不同的生物学特性,对生境具有不同的生态适应性或相互竞争所致。

关键词: 控释肥, 养分利用率, 水稻, 一次性基施肥

Abstract: By using χ2 test for 2×2 contingency table and Spearman’s rank correlation coefficient,We studied the interspecific relationships of dominant species in Oxytropis coerulea community in Wutai Mountains.A total of 18 plant species and 153 species-pairs interspecific association were investigated.The results indicated that only 6 species-pairs showed significant or highly significant association in χ2 test,while 18 species-pairs had significant or highly significant correlation in Spearman’s rank test.Therefore,Spearman’s rank test was more accurate and reliable.Generally,most species were not closely related with each other.The species with similar biological features tended to be positively associated and correlated,while those with different biological features and different adaptabilities to the habitats or existing inter-competitions tended to be negatively associated and correlated.

Key words: Controlled release fertilizer, Nutrient use efficiency, Rice, Single basal application