2011—2016年武夷山甜槠常绿阔叶林乔木层群落动态  

Community dynamics of arbor layer in the Castanopsis eyrei evergreen broadleaved forest in the Wuyi Mountains,Fujian Province,southeastern China in 2011—2016

作　　者：丁晖[1] 徐辉 徐鲜钧 方炎明[3] 陈水飞[1] 李垚[3] 葛晓敏 江宝兴 DING Hui;XU Hui;XU Xianjun;FANG Yanming;CHEN Shuifei;LI Yao;GE Xiaomin;JIANG Baoxing(Research Center for Nature Conservation and Biodiversity/State Biodiversity Comprehensive Observation Station for Wuyi Mountains/State Environmental Protection Scientific Observation and Research Station for Ecological Environment of Wuyi Mountains/State Environmental Protection Key Laboratory on Biosafety,Nanjing Institute of Environmental Sciences,Ministry of Environmental Protection,Nanjing 210042,China;Wuyi Mountains Biological Institute of Fujian Provtnce,Wuyishan 354300,China;Co-Innovation Center for the Sustainable Forestry in Southern China/College of Biology and the Environment,Nanjing Forestry University,Nanjing 210037,China;School of Life Sciences,Nanjing University,Nanjing 210046,China)

机构地区：[1]环境保护部南京环境科学研究所自然保护与生物多样性研究中心/武夷山国家生物多样性综合观测站/国家环境保护武夷山生态环境科学观测研究站/国家环境保护生物安全重点实验室,南京210042 [2]福建省武夷山生物研究所,武夷山354300 [3]南京林业大学南方现代林业协同创新中心/生物与环境学院,南京210037 [4]南京大学生命科学学院,南京210046

出　　处：《生态学报》2018年第20期7391-7399,共9页Acta Ecologica Sinica

基　　金：环境保护部事业费项目;福建省公益类科研院所专项;国家环境保护标准项目

摘　　要：武夷山保存了典型的中亚热带原生性森林生态系统。加强武夷山常绿阔叶林研究,对支撑武夷山生态保护实践具有重要意义。2016年,对按照美国史密森热带研究所热带森林研究中心调查技术规范建立的甜槠常绿阔叶林样地进行了首轮复查,并从物种组成、群落多样性、重要值、死亡率、补员率、胸径等方面分析了其群落动态。结果表明:2016年的乔木个体为25科44属88种,较2011年增加了2科2属7种。群落的优势种组成及其优势程度变化不大,在重要值大于1的21个常见树种中,10个树种的重要值增高,11个降低。甜槠仍为建群种,其重要值略下降。乔木个体增加到3888个,年死亡率为1.31%,年补员率为2.98%。43个树种出现死亡,46个出现补员。4个常见树种的种群数量下降,16个上升。群落的平均胸径从4.82 cm增大为4.89 cm,5个常见树种的平均胸径下降,16个上升。死亡个体的平均胸径为4.47 cm,补员个体为1.67 cm。甜槠仍然将在乔木层,马银花和鹿角杜鹃在亚乔木层保持优势地位。在短期内群落结构不会出现较大的变化,但黄绒润楠、厚皮香等阴生树种和中性树种优势度的增加可能预示群落将向中生群落(顶级群落)演替。The Wuyi Mountains represent the primary forest ecosystem characteristic of the mid-subtropics. It is important to support biodiversity conservation in the Wuyi Mountains by strengthening research on the evergreen broad-leaved forests ofthese mountains. In 2016, relevant data was gathered in an existing research plot, which was established according to standard international protocols （Smithsonian Tropical Research Institute, Center for Tropical Forest Science, CTFS）, in a Castanopsis eyrie-evergreen broad-leaved forest. The community dynamics of the trees was analyzed based on species composition, community diversity, importance values, mortality rate, recruitment rate, and tree DBH. The results showed that the community of trees in the plot changed from 23 families, 42 genera, and 81 species in 2011 to 25 families, 44 genera, and 88 species in 2016. There was no significant change in community-dominant species composition or in the degree of dominance in the past 5 years. For the 21 common tree species with higher importance values （ 〉 1 ） in 2016, the importance values of 10 species increased, and those of 11 species decreased, when compared with their importance values in 2011. Castanopsis eyrei was still the dominant species in the plot, although its importance value declined slightly. The number of individual trees had increased to 3888 by 2016, the average annual mortality was 1.31%, and the average annual recruitment rate was 2.98%. Compared with the plants living in 2011, individual trees from 43 species had died, and those from 46 species were recruited over the past 5 years. The results also indicated that the populations of 4 common tree species declined, and the populations of 16 common tree species increased from 2011 to 2016. The average DBH of all trees in this community increased from 4.82 cm to 4.89 cm. For the 21 common tree species, the average DBHs of trees from 5 species decreased, and those of the others increased. In addition, the average DBH of dead and recruited individuals wer

关 键 词：种群更新 物种组成 群落结构 死亡率 补员率 

分 类 号：S718.5[农业科学—林学]