滇中磨盘山不同演替阶段林分结构及物种多样性研究  

Stand Structure and Species Diversity at Different Succession Stages in the Mopan Mountain in Central Yunnan

作　　者：欧阳田甜 赵洋毅[1,2] 涂晓云 和娴越 王帅兵 段旭 OUYANG Tian-tian;ZHAO Yang-yi;TU Xiao-yun;HE Xian-yue;WANG Shuai-bing;DUAN Xu(College of Ecology and Environment,Southwest Forestry University,Kunming 650224,Yunnan,China;Yuxi Forestry Ecosystem Research Station,National Forestry and Grassland Administration,Kunming 650224,Yunnan,China;Chemical Biology and Environment,Yuxi Normal University,Yuxi 653100,Yunnan,China)

机构地区：[1]西南林业大学生态与环境学院,云南昆明650224 [2]国家林业和草原局云南玉溪森林生态系统国家定位观测研究站,云南昆明650224 [3]玉溪师范学院化学生物与环境学院,云南玉溪653100

出　　处：《西北林学院学报》2024年第3期67-76,共10页Journal of Northwest Forestry University

基　　金：云南省自然生态监测网络项目(2022-YN-13);国家林业和草原局林业科技创新平台运行项目(2020132550);云南省青年人才专项(YNWR-QNBJ-2019-226,YNWR-QNBJ-2019-215);云南省科技厅青年基金项目(202101AU070008)。

摘　　要：为探明中亚热带不同演替阶段林分结构特征及其与物种多样性的关系,以滇中磨盘山处于演替前期、中期和后期的针叶纯林、针阔混交林、常绿阔叶林3种典型林分为对象,量化研究不同演替阶段林分空间结构多个指标变化规律和物种多样性指数的差异,并借助冗余分析探究二者间相互作用关系;再利用多元分布对林分空间结构参数进行全面描述和综合评价。结果表明,林分空间结构参数在不同演替阶段林分中差异显著,群落演替对树种混交度、林层差异度的影响最大,均在演替后期达到最大值,分别为0.703、0.511;综合比较多元分布结果发现,3种林分类型中,以常绿阔叶林空间结构相对最为合理;乔木层物种丰富度、Simpson指数、Shannon-Weiner指数和Pielou均匀度指数均随着演替进展而上升,并在常绿阔叶林中各指数最高;树种隔离程度是影响乔木层物种多样性的主要驱动因子,其次是胸径结构及林分密度。研究结果可为该地区林分结构调整和森林可持续经营提供理论依据。In order to explore the structural characteristics of the stands at different succession stages in central and subtropical Asia and their relationship with species diversity,three typical forest stands in the early,middle and late stages of succession in the Mopan Mountain in central Yunnan were selected as research objects,the changes of multiple indicators of stand spatial structure and species diversity index in different succession stages were quantitatively studied,and the interaction relationship between the two was explored with the help of redundancy analysis.The multivariate distribution was used to comprehensively describe and evaluate the spatial structure parameters of the stands.The results showed that the spatial structure parameters of the stands differed significantly among the stands at different succession stages,and community succession had the strongest influence on the degree of tree species mixing and forest layer difference,both reaching the maximum values in the late succession stage,which were 0.703 and 0.511,respectively.The species richness of the tree layer,Simpson index,Shannon-Weiner index and Pielou uniformity index all increased with succession,and the indices were the highest in evergreen broadleaved forests.The degree of tree species isolation was the main driver of species diversity in the tree layer,followed by diameter at breast height,structure and stand density.The results can provide a theoretical basis for stand adjustment and sustainable forest management in this area.

关 键 词：林分结构 物种多样性 多元分布 群落演替 磨盘山 

分 类 号：S718.54[农业科学—林学]