梅花山自然保护区拟赤杨群落的种间分离  

Interspecific Segregation in Alniphyllum fortunei Forest in the Meihuashan Nature Reserve in Fujian, China

作　　者：蔡冰玲 吴承祯[2] 洪伟[2] 魏鑫 

机构地区：[1]福建省漳州市林业局,漳州363000 [2]福建农林大学林学院,福州350002 [3]福建省漳州市旅游局,漳州363000

出　　处：《应用与环境生物学报》2010年第2期154-157,共4页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金项目(No.30671664);福建省自然科学基金项目(No.2001F007);福建农林大学青年教师科研基金项目资助(No.06A08)~~

摘　　要：对野外梅花山拟赤杨林92个5m×5m样方内所有高度≥2m且个体株数>8的物种个体绘制了空间分布图,应用最近邻体法判定每个个体的最近邻体植株,然后采用N×N最近邻体列联表的截表法研究了拟赤杨林的种间分离规律.结果表明,在17个主要树种形成的136组种对中,绝大多数种对的种间关系表现为显著正分离(占73.53%),其他种对表现为随机毗邻(占26.47%),没有出现显著负分离种对.呈正分离的种对,可能是因为它们多为群落的较优势种,具有较强的适应能力和竞争能力.在此基础上,引入群落总体分离这一概念,应用χ2检验法研究了拟赤杨林中物种的总体分离规律.结果表明,拟赤杨林中17个物种互相交错分布,是全面不分离的.Interspecific relationship is an important factor affecting community composition, structure, function and dynamics. In order to understand the interspecific segregation in Alniphyllum fortunei forest, 92 quadrats were investigated and a distribution map was made for all trees with H≥2 m and individual numbers〉8. Based on the data, using the coefficient of segregation by the subtable of the N×N nearest-neighbor contingency table, the interspecific segregations of the tree species in A. fortunei forest in the Meihuashan Nature Reserve in Fujian, China were studied. The result indicated that most of species pairs were positively segregated （73.53%）, only a few species pairs were randomly segregated （26.47%）, and no negatively segregated pairs were found. Large individuals that were subdominant species in the forest tended to be positively segregated with other large trees, due to their strong capacity in adaptation and competition. In addition, a new concept, that is, the overall segregation was introduced. The overall segregated pattern in all species in the forest was studied by χ^2 test based on the N×N nearest-neighbor contingency table. The result showed that 17 studied species were overlapped in distribution and characterized by the overall non-segregation. Fig 1, Ref 3, Ref 11

关 键 词：梅花山自然保护区 拟赤杨群落 种间分离 最近邻体法 N×N最近邻体列联表 Χ^2检验 

分 类 号：S718.54[农业科学—林学]