长白山阔叶红松林中红松与紫椴的空间分布格局及其关联性  

Spatial distribution patterns and associations of Pinus koraiensis and Tilia amurensis in broad-leaved Korean pine mixed forest in Changbai Mountains

作　　者：张健[1] 郝占庆[1] 宋波[2] 叶吉[1] 李步杭[1] 姚晓琳[1] 

机构地区：[1]中国科学院沈阳应用生态研究所 [2]美国克莱姆森大学,clemsonsc29634

出　　处：《应用生态学报》2007年第8期1681-1687,共7页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(30570306);中国科学院知识创新工程重要方向项目(KZCX2-YW-430);国家科技支撑计划资助项目(2006BAD03A09)

摘　　要：以长白山阔叶红松林25 hm^2样地调查数据为基础,采用点格局分析方法O-ring统计,分析了红松与紫椴两个优势树种在主林层、次林层和林下层的空间分布格局,以及各林层之间的种内和种间关联性.结果表明：在小尺度上,红松和紫椴总体上呈聚集性分布,但不同林层的分布格局各异.物种在较低的林层呈明显的聚集分布,而在较高的林层则呈随机或规则分布,聚集度随林层的增高而降低.主林层与次林层红松在＜11 m的尺度内呈明显的正相关.主林层与次林层、林下层紫椴之间呈负相关.红松和紫椴在整体上表现为正相关,但不同林层间的关联性各异.主林层红松与3个林层紫椴之间没有明显的关联性;次林层红松与次林层紫椴在＞4 m的尺度上呈负相关,而与林下层紫椴没有明显的关联性;主林层紫椴与次林层红松在0～100 m尺度内都表现为显著正相关.Based on the investigation data from a 25 hm^2 broadleaved Korean pine （Pinus koraiensis） mixed forest plot in Changbai Mountains of China, the dominant species Korean pine and Tilia amurensis were chosen as research objects. One point pattern analysis method, O-ring statistics, was used to analyze the spatial patterns of the species in three vertical layers, i. e. , overstory, midstory and understory layers, and the spatial associations of intra- and inter-species between different vertical layers were studied. The results showed that P. koraiensis and T. amurensis were clumped at smaller scales. Higher layers tended to be randomly or regularly distributed, while lower layers tended to be aggregated at smaller scales. The aggregation degree decreased with canopy height. P. koraiensis stems in overstory layer were significantly positively associated to the stems in midstory layer at scales 〈 11 m, and T. amurensis in overstory layer showed negatively correlation with that in midstory and understory layers. There was generally a positive correlation between the two species, but the association varied among different layers. No significant correlation was observed between P. koraiensis stems in overstory layer and T. amurensis in three layers. P. koraiensis stems in midstory layer showed slightly negative correlation with T. amurensis in the same layer at scales 〉 4 m, but no significant association to T. amurensis in understroy layer. T. amurensis in overstory layer was significantly positively associated to P. koraiensis in midstory layer at scales 〈 100 m.

关 键 词：点格局分析 空间关联性 空间格局 阔叶红松林 长白山 

分 类 号：S718.5[农业科学—林学]