南麂岛木麻黄生存群落空间分布及其环境解释  

Spatial Distribution and Environmental Interpretation of Casuarina equisetifolia Communities on Nanji Island.

作　　者：孔景 季芯悦 王鹏程 杨国栋 俞元春 KONG Jing;JI Xin-yue;WANG Peng-cheng;YANG Guo-dong;YU Yuan-chun(College of Biology and the Environment,Nanjing Forestry University/Co-innovation Center for the Sustainable Forestry in Southern China,Nanjing 210037,China;Jiangsu Provincial Academy of Environmental Science/Jiangsu Province Key Laboratory of Environmental Engineering,Nanjing 210036,China)

机构地区：[1]南京林业大学生物与环境学院/南方现代林业协同创新中心,江苏南京210037 [2]江苏省环境科学研究院/江苏省环境工程重点实验室,江苏南京210036

出　　处：《生态与农村环境学报》2022年第7期882-889,共8页Journal of Ecology and Rural Environment

基　　金：国家自然科学基金(31300558);江苏省基础研究计划(BK20130972)。

摘　　要：木麻黄(Casuarina equisetifolia)是南麂岛主要保护树种之一。为论证南麂岛防护林建设规划,了解不同环境因子对木麻黄群落的影响,设置了24个群落样方,采用自组织特征映射网络模型(SOM)、多元回归树(MRT)等方法对南麂岛主要防护林树种——木麻黄的生存群落进行排序和分类。结果表明:(1)基于所选取的24个样方,木麻黄群落可被分为4种群落类型,不同分析方法得到的结果基本一致;(2)木麻黄生存群落与土壤含水量和土壤有机质之间的关系密切,表明木麻黄作为防风林树种,对保持水土、防风固沙和改善土壤结构非常重要;(3)SOM和MRT 2种分析方法相结合可以用于植物物种与环境因子之间相关性研究。Casuarina equisetifolia is one of the main protective species in Nanji Island,this study aims to prove the planning for the construction of the shelter forest in Nanji Island and understand the impact of different environmental factors on the Casuarina equisetifolia community.Methods:24 community quadrats were established.Multivariate regression trees(MRT)and self-organizing feature mapping(SOM)were used in this study to classify the surviving communities of Casuarina equisetifolia.Results show that:(1)The 24 selected quadrats could be divided into 4 community groups associations and the results obtained using various research methodologies were highly consistent.(2)The relationship between the survival condition of Casuarina equisetifolia and water content and the organic matter in the soil indicates that being one of the windbreak plants,Casuarina equisetifolia plays an important role in the conservation of soil and water,wind prevention and sand fixation,as well as the improvement of the soil structure.(3)The combination of SOM and MRT can be used as a comprehensive analytical method in future researches on the relationship between plant species and environmental factors.

关 键 词：南麂岛 木麻黄 环境因子 自组织特征映射网络 

分 类 号：Q948.11[生物学—植物学]