马尾松群落的种间联结性研究  

Interspecific association of Pinus massoniana community

作　　者：刘鹏[1,2] 张合平[1,2] 

机构地区：[1]中南林业科技大学,湖南长沙410004 [2]南方林业生态应用技术国家工程实验室,湖南长沙410004

出　　处：《湖南林业科技》2017年第5期22-28,共7页Hunan Forestry Science & Technology

基　　金：国家林业公益性行业科研专项项目(201204512);湖南省水利厅水土保持专项(20132130310)

摘　　要：以马尾松群落为研究对象,采用方差比率法、x^2检验、Pearson相关和Spearman轶相关检验对乔木层5个主要树种、灌木层25个优势树种、草本层16个优势物种的种间联结性及相关程度进行定量研究。结果表明:马尾松群落乔木层、灌木层、草本层总体种间关系分别表现为显著负关联、不显著正关联和显著负关联;x^2检验统计显示乔木层、灌木层、草本层负关联种均占较大优势,分别占总种对数的40.00%、66.67%、61.67%,正关联种对数次之,分别占总种对数的10.00%、33.33%、38.33%,无关联种对数较少;Pearson相关检验显示乔木层有正关联种对4对、负关联种对6对、正负关联比为0.67,灌木层有正关联种对113对、负关联种对187对、正负关联比为0.60,草本层有正关联种对51对、负关联种对69对、正负关联比为0.74;Spearman轶相关检验显示乔木层有正关联种对3对、负关联种对7对、正负关联比为0.43,灌木层有正关联种对111对、负关联种对152对、无关联种对37对、正负关联比为0.73,草本层有正关联种对46对、负关联种对65对、无关联种对9对、正负关联比为0.71。The study was conducted in Pinus massoniana forest at Shuikoushan forest farm of Hunan. A number of statistic methods （ Variance ratio method, x test, Pearson correlation coefficient test and Spearman rank correlation coefficient test） were used to characterize interspecific associations of 5 overstory tree species, 25 shrub species and 16 herbaceous species. The results showed that the Hunan Shuikoushan Pinus massoniana community forest tree layer, shrub layer, herb layer of interspecific relationship were showed significant negative correlation and no significant positive correlation and significant negative correlation, x2 test statistics of tree layer, shrub layer and herb layer were negatively correlated to occupy a great advantage, respectively of the total species 40.00%, 66.67%, 61.67% log, positive association pairs took second place, respectively of the total pairs 10%, 33.33% and 38.33%, unrelated pairs less. Pearson related test showed that the tree layer has a positive correlation for 4 pairs, 6 pairs of negative association, positive and negative correlation ratio is 0.67, the shrub layer is in 113 postitive association, 187 negative association, positive and. negative association ratio is 0.60, the herb layer has a positive correlation for 51 pairs, 69 pairs of negative association, positive and negative association ratio is 0.74. Spearman Yi correlation test showed that tree layer has a positive correlation of 3 pairs, negative association of seven pairs, positive and negative association is 0.43, shrub layer has positive correlation of 111 pairs, negative association of 152 pairs, independent contact for 37 pairs, positive and negative association is 0.73, herb layer has positive association of 46 pairs and negative association of 65 pairs, independent contact for 9 pairs, positive and negative associations is 0.71.Keywords Pinusmassoniana

关 键 词：马尾松群落 种间联结 方差比率法 相关检验 

分 类 号：S718.54[农业科学—林学]