Interspecific Affinity of Main Species in Tree Layer of Pinus Kwangtungensis Community in Maolan Nature Reserve
Based on the survey data of Pinus kwangtungensis community in Maolan Nature Reserve,the interspecific association,mutual relationship and niche of 15 main tree species were explored by importance value,species association index,Spearman rank correlation coefficient,niche breadth and niche overlap.The results were as follows:1.The overall community showed no significant positive association,the interaction and competition between species were not strong,and the interspecific collocation relationship formed had better utilization of resources.2.The top five species importance value and niche breadth value of the main species were Pinus kwangtungensis,Platycarya strobilacea,Quercus phillyraeoides,Carpinus lipoensis and Q.glauca,respectively.The number of individuals in the community was large,and they had similar ecological habits and resource needs.They were not only the dominant species and important species of the tree layer,but also the dominant species of community succession.There was a high niche overlap and fierce competition between the dominant species.3.Among the 105 pairs of Spearman rank correlation coefficient,66 pairs were positively correlated,39 pairs were negatively correlated,and the ratio was 1.692.The correlation between species was relatively loose,and various groups tended to be independently distributed with greater randomness.
Pinus kwangtungensisoverall connectioninterspecific correlationecological nichea community
万方数据
维普
