喀斯特森林恢复过程中优势乔木树种种间联结性分析  

Interspecific associations of dominant tree species with restoration of a karst forest

作　　者：杨春玉[1] 刘绍飞[2] 喻理飞[1] 

机构地区：[1]贵州大学林学院,贵州贵阳550025 [2]贵州茂兰国家级自然保护区管理局,贵州荔波558400

出　　处：《浙江林学院学报》2010年第1期44-50,共7页Journal of Zhejiang Forestry College

基　　金："十一五"国家科学技术支撑计划项目(2006BAC01A09-1);国家重点基础研究发展计划(973计划)项目(2006CB403206);贵州省优秀科技青年人才培养计划项目(2005-0529);贵州省省长基金项目(2001-3)

摘　　要：采用2×2列联表、χ2检验、Ochiai指数等方法定量分析了在茂兰国家级自然保护区喀斯特森林自然恢复过程中乔灌过渡阶段、乔林阶段和顶极阶段群落主林层优势树种的种间联结性。结果表明:从乔灌过渡阶段、乔林阶段到顶极阶段,群落的总体种间关联性呈无关联性→正关联性→显著正关联性,反映了树种间竞争分化的过程;树种种间联结性从负联结低关联度的种对为主,发展到以正联结高关联度种对为主的变化规律,反映了从乔灌过渡、乔林阶段和顶极阶段群落主林层树种间关系从相对独立、相互排斥的关系,经种间充分竞争,逐渐形成相互依存关系的发展过程。讨论了种间联结性形成原因,提出了高度异质、极端脆弱的喀斯特地区,群落种间联结性深入研究的途径。Using analysis of variance, Ochiai and 2 × 2 contingency table, we analyzed quantitatively the interspecific associations of dominant species in several communities during the forest succession in Maolan National Nature Reserve, Guizhou Province. Through analyzing the association of species, we know that from shrub arbor stage to forest stage to climax stage, the interspecific association of community changes from no correlation to positive correlation to signification and this change reflects the process of species competition and differentiation. The species connection turns from minus and low correlation to positive and high correlation, and this laws of development reflects the transition of the dominant species interspecific associations from mutual independence and exclusion to mutual dependence by the complete competition during the forest succession from the shrub arbor stage to forest stage to the climax stage. We discussed the formative reasons of interspecific association and put forward a study way of the interspecific association in karst areas with high degree of heterogeneity and extreme fragility. [Ch, 6 tab. 14 ref.]

关 键 词：森林生态学 种间联结 优势乔木树种 森林恢复过程 喀斯特 

分 类 号：S718.5[农业科学—林学]