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当前位置: 首页 > 文章 > 海南霸王岭陆均松种群年龄结构与点格局分布特征 生态学杂志 2015,34 (6) 1507-1515
Position: Home > Articles > Age structure and point pattern analysis of Dacrydium pectinatum in Bawangling,Hainan Island Chinese Journal of Ecology 2015,34 (6) 1507-1515

海南霸王岭陆均松种群年龄结构与点格局分布特征

作  者：
李肇晨;陈永富;洪小江;韩文涛;李小成
单  位：
中国林业科学研究院资源信息研究所;海南霸王岭国家级自然保护区管理局
关键词：
陆均松;种群结构;静态生命表;点格局分析
摘  要：
陆均松(Dacrydium pectinatum)是构建海南热带山地雨林天然群落的关键种。本文通过实地调查,利用生存分析理论及空间点格局分析法,对陆均松种群龄级结构、空间分布特征及生存现状进行分析。结果表明:1)陆均松天然种群各龄级数量分布呈现前期锐减,波动强烈,中期稳定,后期衰退的特点,种群在生活史初期受到严苛的环境筛选作用;2)陆均松种群存活曲线波动较大,在Ⅰ~Ⅴ龄级阶段种群死亡率及消失率较高,存活曲线表现为Deevey-Ⅲ型,Ⅶ~ⅩⅦ龄级阶段,存活曲线表现为Deevey-Ⅰ型;3)在研究尺度范围内,陆均松种群不同生活史阶段空间分布格局存在明显差异,生活史初期和中期,个体在中小尺度上表现为聚集性分布,聚集强度随尺度的增大及年龄增长逐渐减弱并转为随机分布,生活史后期种群个体在整个研究尺度表现为随机分布;4)不同生活史阶段间的空间关联性不显著,多表现为无关联。
译  名：
Age structure and point pattern analysis of Dacrydium pectinatum in Bawangling,Hainan Island
作  者：
LI Zhao-chen;CHEN Yong-fu;HONG Xiao-jiang;HAN Wen-tao;LI Xiao-cheng;Research Institute of Forest Resource Information Techniques,Chinese Academy of Forestry;Hainan Bawangling National Natural Reserve;
关键词：
Dacrydium pectinatum;;population structure;;static life table;;point pattern analysis
摘  要：
Dacrydium pectinatum is one of the symbolic species in tropical mountain rain forest in Hainan Island and one of the key species to maintain the natural communities in that region.Based on the survival theory and point pattern analysis,we analyzed the demographic structure,spatial distribution characteristics and inter-species relationships of D. pectinatum. The results showed that: 1) The tree number for each age class of the D. pectinatum population showsed that the mortality in the first period of life stage is high,and the population is relatively stable in the middle period,after which the mortality increases gradually. 2) The survival curve of D. pectinatum population changes greatly. The population mortality and disappearance rate are higher inⅠ-Ⅴ age classes,showing the form of Deevey-Ⅲ; in the Ⅶ-ⅩⅦ age classes,the survival curve shows the form of Deevey-Ⅰ. 3) In the range of the study scale,there is an obvious difference in the spatial distribution of D. pectinatum at different life stages. The individuals perform aggregation distribution at small and medium scales in the early and middle periods of life stages,however,the aggregation intensity gradually is weakened with the increase of scale and age,from a clumped to a random pattern as trees grow from young to middle-aged to old trees. In the later period of life stage,individuals show random distribution at the entire study scale. 4) The spatial association among different life stages is not significant,and most of them exhibit no correlation.

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