草业学报2017，Vol.26Issue(8)：12-23,12.DOI:10.11686/cyxb2016390
天山北坡不同区域及海拔对天然草地鸭茅群落物种种间关系影响
Interspecific associations in Dactylis glomerata communities in different regions and altitudes on the northern slope of Tianshan Mountain
摘要
Abstract
The aim of this research was to identify the interspecific associations of Dactylis glomerata and to identify changes in community stability related to altitude.D.glomerata communities in different regions and altitudes on the northern slope of Tianshan Mountain were analyzed using the adjacent lattice method to identify and compare the dominant species.The interspecific associations of D.glomerata and changes in community stability related to altitude were determined by calculating association indexes and spearman's RAML correlation coefficients,and by conducting variance tests and x2 tests.The results showed that:1) the overall association of the D.glomerata community changed from a positive implicative association to a negative association as the altitude increased from 1800 m to 2200 m.The stability of the D.glomerata communities gradually weakened with increasing altitude.2) The association coefficient and association index were weak for most pairs of species,and most of the species pairs showed weak or no interspecific associations.3) D.glomerata showed a positive implicative association with a species in some cases,and a negative association with the same species in other cases.The associations were related to the environmental factors in different regions and at different altitudes.关键词
种间关系/联结指数/海拔/种群Key words
interspecific relationship/association index/altitude/population引用本文复制引用
张鲜花,陈爱萍,朱进忠,李海琪..天山北坡不同区域及海拔对天然草地鸭茅群落物种种间关系影响[J].草业学报,2017,26(8):12-23,12.基金项目
国家自然科学基金项目(31560658)资助. （31560658）
