Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (22): 8-15.doi: 10.11924/j.issn.1000-6850.2014-0504

Special Issue: 农业气象

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Comparative Study on Interspecific Association in Tropical Evergreen Monsoon Elfin Forest at Two Successional Stages in Tongguling of Hainan Island

  

  • Received:2014-03-03 Revised:2014-04-04 Online:2014-08-05 Published:2014-08-05

Abstract: In order to reveal the interactions between the characteristic of interspecific association and communities succession, the author studied the dynamic changes of communities in tropical evergreen monsoon elfin forest. Based on 2×2 contingency tables, a series of parameters including X2 test, association coefficient (AC) ,percentage of co-occurrence (PC) and variance ratio (VR) were used to applied, the author studied the characteristic of interspecific association among fifteen main plant populations in tropical evergreen monsoon elfin forest at early and late successional stages (the stage of shrub forest and the stage of tropical evergreen monsoon elfin forest) in Tongguling National Nature Reserve of Hainan island. The studied indicated that: (1) because of an effective protection for shrub communities, all trees showed a significant of positive association at early stage (WI=139.91>X20.05=83.68). At late stage, the percentage of positive association was increased and the percentage of negative association was decreased in tropical evergreen monsoon elfin forest, all trees showed a significant of positive association too. The results indicated that the communities were developing towards a stabilized stage in which the woody species coexisted in harmony. (2) As to the bridging species and later invading species, half of position associations among them were significant. Compared with the positive and null associations, fewer negative associations were found. This implied that the reason for these species coexisted in harmony was changing of community structure made the space, light and other resources had an effective allocation.