广西防城港红树植物木榄种群结构的研究  

Study on population structure of mangrove species Bruguiera gymnorrhiza in Fangcheng Port of Guangxi

作　　者：姚贻强[1] 李桂荣[1] 梁士楚[1] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004

出　　处：《海洋环境科学》2009年第3期301-304,共4页Marine Environmental Science

基　　金：广西教育厅科研项目(桂教科研[2006]26);广西师范大学生态学博士学位授权点建设专项基金项目(XKY2006ZD02)

摘　　要：木榄是红树林重要树种，在广西主要分布在防城港。本文从种群生态学的角度，探讨了广西防城港红树林保护区木榄种群的高度结构、胸径结构、冠幅结构和空间格局特征。结果表明，木榄种群个体高度集中分布在2～4m；木榄种群个体胸径集中分布在10-20cm或30—50cm。木榄种群冠幅结构受密度、个体对空间竞争等的影响较大，冠幅直径与种群密度呈现较高程度的负相关（R=-0．911）。样地Q1，Q2，Q3趋于集群分布；样地Q5处于集群分布；样地Q4，Q6趋于随机分布。Bruguiera gymnorrhiza in Fangcheng Port of Guangxi province is one of important mangrove species. The character of height, diameter and crown structure and spatial patterns of Bruguiera gymnorrhiza population in Fangcheng Port were analyzed in the population ecology. The results showed that the altitude of individual scatters all in 2 - 4 m, the DBHs concentrates distribution on 10 - 20 cm or 30 - 50 cm. The crown structure of populations was influenced largely by density and competition of individuals for space. Crown diameter largely negatively correlated with the population density （R =-0.911 ）. Bruguiera gymnorrhiza population of Q1, Q2 and Q3 tended to clumped. Q5 was clumped. Q4, Q6 tended to the random distribution.

关 键 词：红树林 木榄 种群结构 种群生态学 

分 类 号：Q948.1[生物学—植物学]