凯里岩溶石山白栎群落主要种群生态位研究  

Spatial Pattern of Quercus fabri Population in Karst Hills of Kaili

作　　者：王健祥[1,2] 周实然 梁士楚 

机构地区：[1]凯里学院,贵州凯里556000 [2]广西师范大学,广西桂林541004

出　　处：《凯里学院学报》2017年第6期40-45,共6页Journal of Kaili University

摘　　要：采用Levins公式和Pianka公式测定了贵州凯里岩溶石山白栎(Quercus fabric)群落乔木层10个主要种群和灌木层11个主要种群的生态位宽度和生态位重叠,并探讨了主要种群间的关系以及它们的环境适应能力.结果表明:白栎种群的生态位宽度最大,在群落中处于绝对的优势地位,是该群落的建群种;白栎种群与乔木层和灌木层优势种群生态位重叠值集中在0.1~0.2,与各种群的竞争趋势不明显,对资源共享趋势较明显,群落处于相对稳定的发展状态.The niche breadth and overlap of 10 dominant populations in tree layer and 11 dominant populations in shrub layer of Quercus fabri community in karst hills Kaili were measured by using the formula described by Levins and Pianka, and the relationship between the dominant populations and the ability of those populations to adapt to karst environment were also analyzed. The results showed that, the niche breadth of Quercus fabric population in the community was the biggest, suggesting that it was in absolute dominance in the community, as the edificatory in the community. The niche overlap value of Quercus fabric population, together with that of the layer, ranged from 0.1 to 0.2, indicating an insignificant obvious tendency in source sharing dominant population in tree layer and shrub competition in the community, a relatively , and a relatively stable growth in the community.

关 键 词：岩溶石山 白栎群落 优势种群 生态位 

分 类 号：S718.5[农业科学—林学]