摘要： 应用2×2列联表的χ2检验和Spearman秩相关分析方法对短花针茅群落21个主要物种的种间关系进行了分析。结果表明:呈不显著相关的种对多于呈显著和极显著相关的种对,呈正相关和负相关的种对在所有种对中几乎各占一半 短花针茅群落21个主要物种可划分为三个生态种组,即冷蒿组、狭叶锦鸡儿组和短花针茅组 研究物种种间关系时,Spearman秩相关系数检验具有较高的灵敏度。
关键词:
短花针茅群落,
植物物种,
种间关系
Abstract: The relationship between 21 main species of Stipa breviflora communities were studied by using x2 test forthe 2 X2 contingency table and印eaiman's ranksignificant correlation were more than pairs thatcorrelation analysis. The results indicated that:The pairsthat present nopresent significant and extremely significant correlation. In all of thespecies pairs,each of the positive correlation coefficients and negative correlation The 21mamcoefficients were almost hold the half.species of Stdpa breviflora communities could be divided into three ecological groups,viz. Artemdsda frigddagroup,Caragana stenophylla group and Stipa breviflora gttup.Speaiman's rank correlation coefficient test was moresensitive to study relationship between species.
Key words:
Stdpa breviflora communities,
Plant species,
Interspecific relationships
中图分类号:
王凤兰, 牛建明, 张庆. 短花针茅群落主要物种种间关系的研究[J]. 华北农学报, 2009, 24(1): 159-164. doi: 10.7668/hbnxb.2009.01.035.
WANG Feng-lan, NIU Jian-ming, ZHANG Qing. Study on Interspecific Relationships among Main Species of Stipa breviflora Communities[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(1): 159-164. doi: 10.7668/hbnxb.2009.01.035.