海南岛铜鼓岭热带常绿季雨矮林2个演替阶段的种间联结性对比研究  

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

作　　者：杨琦[1,2] 周婧[1,2] 陶楚[1,2] 陈玉凯[1,2] 杨小波[1,2] 李东海[1,2] 龙文兴[1,2] 

机构地区：[1]海南大学热带作物种质资源保护与开发利用教育部重点实验室,海口570228 [2]海南大学园艺园林学院,海口570228

出　　处：《中国农学通报》2014年第22期8-15,共8页Chinese Agricultural Science Bulletin

基　　金：973前期研究专项"海南沿海森林植被变化对岛屿海岸生态安全影响研究"(2010CB134512);中医药行业科研专项"海南省代表性区域中药资源保护利用"(201207002-03);国家科技支撑计划(2012BAC18B04-3-1)

摘　　要：为了揭示热带常绿季雨矮林群落动态变化中,物种种间联结性与群落演替的相互作用,基于2×2联列表,应用X2统计量、联结系数、共同出现百分率和多物种关联指数为参数,研究分析了海南铜鼓岭国家自然保护区内热带常绿季雨矮林的2个不同演替阶段(灌木林阶段和热带常绿季雨矮林阶段)群落15个主要种群的种间联结性。结果表明:(1)演替前期,灌木林群落因为得到有效保护群落总体呈现出显著正联结(WI=139.91>X20.05=83.68);演替后期,热带常绿季雨矮林群落种间负联结比例降低,正联结的比例增加,群落总体仍然呈现出显著正联结(WⅡ=262.11>X20.05=83.68),表明群落演替朝着有利于物种稳定共存的方向发展。(2)过渡种和后期侵入种间正联结与无联结种对数比例(分别为75%和22.7%)远大于负联结比例(2.3%),有一半种对达到显著正联结水平(50%),表明后期侵入种和过渡种通过群落结构的变化分层有效分配空间、光照等资源而稳定共存。In order to reveal the interactions between the characteristics of inter-specific association and communities succession,the author studied the dynamic changes of communities in tropical evergreen monsoon elfin forest. Based on 2 x 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 study the characteristics of inter-specific 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 results showed that： （1） because of an effective protection for shrub communities, all trees showed a significant of positive association at early stage （W1=139.91 〉X^20.05=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 had a significant 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 （75% and 22.7%）, fewer negative associations （2.3%） were found. Therefore, the reason for these species coexisting in harmony was the changes of community structure that effectively allocating the space, light and other resources.

关 键 词：种间联结 群落演替 热带常绿季雨矮林 

分 类 号：Q948.154[生物学—植物学]