摘要
以大兴安岭火烧迹地下小叶樟-刺梅蔷薇群落为研究对象,采用2×2列联表,运用方差比率法(VR)、x^2统计量检验,以共同出现百分率(PC)等指标为参考,对小叶樟-刺梅蔷薇群落及其伴生种的种间关联性进行分析,结果表明:群落内物种的总体关联性的方差比率为1.18,表现为净的正关联性,但并不显著,反映了整个群落处于稳定状态。在13个主要物种形成,78个种对中,28个为正相关,其中有3个种对显著正相关,其余47个种对为负相关。
Interspecific association of companion species in Calamagrostis angustifolia - Rosa davurica community in burned area of Dazing＇ anling district was analyzed in this paper using 2×2 contingency table, variance ratio and χ^2 test. The total related variance ratio among species in Gynostemma pentagynum community was 1 ： 18. The results indicated that there was a positive correlation among species, and the community was at a stable stage. Among 78 species pairs of 13 main species in the community, 28 species pairs showed positive correlations and 3 species showed significant positive correlation, while the other 47 pairs showed negative correlations.
出处
《林业科技情报》
2007年第4期6-8,共3页
Forestry Science and Technology Information
关键词
火烧迹地
小叶樟-刺梅蔷薇
群落
关联性
burned area
Calamagrostis angustifolia - Rosa davurica community
assciation
