Interspecific Relationship among Dominant Rock Plant Species in Beijing Phoenix Hill
In order to explore species composition of rock plant community and interspecific relationship of dominant population occurring in Beijing Phoenix Hill,a sampling survey was carried out.The data obtained were analyzed by using x2-test,Pearson correlation coefficient,and Spearman rank correlation coefficient,as well as other methods.Totally,91 vascular species were found in the rock plant community of Beijing Phoenix Hill,belonging to 43 families and 73 genera,in which there were 25 dominant species whose important value was greater than 0.010.The results of x2-test,Pearson correlation coefficient test and Spearman rank correlation coefficient test were relatively consistent.Positive and negative correlation ratios of the three tests were 0.85,0.40,and 0.78,respectively.The species-pairs with most significant or significant correlations accounted for 8.67 ％,5 ％ and 8.33 ％ of the total in three tests,respectively,indicating that the correlations of the community as a whole were weak,and the plant community was in a relatively stable state.Semi-matrix of x2-test,Pearson correlation coefficient test,Spearman rank correlation coefficient and constellation diagram of Spearman rank correlation coefficient were drawn for clarity and distinction,According to the plant ecological habits and the interspecific relationship of Spearman rank correlation coefficient test,dominant populations were divided into five major ecological species group.However,when the result of x2-test was overall taken into account,it could be combined into three ecological species group.It was suggested that the species-pairs with significant correlation could be used in the plant configuration,to be favorable to the formation of relatively stable artificial community,The results could provide basis for the landscape application and plant disposition of the rock plant species.
国家科技期刊平台
NSTL
万方数据
维普
