摘要
为了探明甘肃敦煌西湖湿地芦苇群落的物种组成和种间关系,在对其植物群落进行样方调查的基础上,通过2×2列联表,采用方差分析、χ2检验、Ochiai指数、Dice指数和Jaccard指数对甘肃敦煌西湖湿地芦苇群落8个主要物种组成的28个种对间的关联性和相关关系进行了深入分析研究。结果表明:(1)芦苇群落总体间的关联性表现为显著正关联。(2)在28对种对中,有20对显示为正关联,占总关联对数的71.4%;有8对显示负关联,占总关联对数的28.6%。(3)芦苇群落种对间多呈正关联,正负关联的对数比为2.5,正关联占优势,但关联性较弱,负关联数较少,但关联性较强;28种物种对之间关联程度及共同出现概率不高,多数表现为无关联。
In order to find out species composition and interspecific relationship of reed community in Dun- huang Westlake Wetland of Gansu, we investigated the relevance and correlation of 28 sepcies pairs （be- tween species to species） composed of 8 dominant species of reed community in Dunhuang Westlake Wet- land of Gansu,according to quadrat investigation of plant community,on the basis of 2×2 contingency ta- ble,using analysis of variance,chi-square test, Ochiai index,Dice and Jaccard index. The results showed： （1）The overall correlation among dominant species of reed community showed a significant positive corre- lation; （2）Among the 28 sepcies pairs, 20 pairs showed a positive correlation accounted for 71.4% of the total correlation pairs;8 pairs showed a significant negative correlation accounted for 28.6% of the total correlation pairs;（3）Reed community species pairs showed a significant positive correlation, and the loga- rithmic ratio of positive and negative correlation was 2.5. The positive correlation was dominated （correla- tion was weak） and the negative correlation was low （correlation was strong）. The correlation and proba- bility of common occurrence of 28 species were not high,and most showed no correlation.
出处
《西北植物学报》
CAS
CSCD
北大核心
2014年第2期358-363,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
甘肃省科技重大专项计划(1302FKDA035)
甘肃省科技支撑计划-社会发展类项目(1011FKCA136)
关键词
甘肃敦煌
西湖湿地
植物群落
种间关联
Dunhuang
West Lake wetland
plant community
correlation of species
