摘要
运用X2检验和Pearson相关系数和Spearm an秩相关系数检验分析了皇甫川流域植物群落中20个优势种的种间关系.结果表明:X2检验中31个种对为正关联,27个种对为负关联(p<0.05或p<0.01,下同),Pearson相关系数有16个种对为正相关,13个种对为负相关;Spearm an秩相关系数有36个种对呈正相关,27个种对呈负相关.分析表明优势种间具有一定的联结性,但存在相当独立的分布格局.根据测定结果将20种植物分为3个生态种组.
20 dominant species in Huangfuchuan watershed were analysed by X^2 test,Pearson＇s correlation coefficient and Spearman＇s rank correlation coefficient test. The results indicated that： positive association coefficients of 31 species-pairs for the X^2 test were significant （p〈0. 05） or highly significant （p 〈 0. 01）, and negative association coefficients were significant or highly significant in 27 other species-pairs; In Pearson＇s correlation coefficient test, 16 species-pairs had positive relationship,and 13 species-pairs had negative relationship ; In spearman＇s rank correlation coefficient test ,there were positive relationship between 36 species-pairs and negative relationship between 27 species-pairs. The results showed that dominant species have interspecific relationships and independent distribution pattern. Based on the divided into three ecological groups. results, 20 species in the community were
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第6期660-666,共7页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古自然科学基金(200711020612)
内蒙古大学"513人才计划"(205154)资助项目
关键词
皇甫川流域
优势种
种间联结
相关分析
Huangfuchuan watershed
dominant species
interspecific association
correlation analysis
