摘要
黔稠、榕叶冬青和青冈是猫儿山植物群落中分布相对广泛的3个优势种。对它们在不同海拔上的径级结构分析结果表明:3个物种在2个海拔梯度上径级都呈现峰型分布,最高峰都集中在4～8cm的中小径级范围内,中小个体储备充足,会在相当长一段时间内保持其在群落中的优势地位。通过连续取样的L方程点格局分析方法,对其空间格局和种间关系分析显示:3个物种在样地中不同尺度上以空间显著聚集分布为主,在极少数尺度上仍然存在随机分布和均匀分布格局。3个物种在50m范围内的分布几乎都表现为独立不相关性。而黔稠和青冈同属于青冈属,在2个样地中的一些小尺度上表现为显著的正相关性。
Cyclobalanopsis stewardiana, Ilex ficoidea and C. glauca were three dominant species relatively broadly distributed in Maoershan Mountain, Guangxi of southern China. At different altitudes, size distribution of three species individuals showed a unimodal type, and the peak of three species＇ DBH all centralized at 4-8 cm class. DBH structures showed that three species had enough junior individuals, meaning they will continuously play dominant role in community for a long time. Based on continuous sampling data for L-function analyses, comparing spatial distribution and species association of three species, we found that three species were significantly aggregated and distributed on several scales, and only a few scales showed random and regular distributions. Associations among three species all showed an independent distribution pattern within 50 m in two plots. C. stewardiana and C. glauca belong to congeneric species and they show a positive correlation on small scales in both plots.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2012年第3期15-19,共5页
Journal of Beijing Forestry University
基金
"十一五"国家科技支撑计划重点项目(2008BAC39B02)
桂林电子科技大学博士启动项目(UF08003
UF08025Y)
广西教育厅科研项目(201010LX148)
关键词
黔稠
榕叶冬青
青冈
点格局
种间关系
Cyclobalanopsis stewardiana
Ilex ficoidea
Cyclobalanopsis glauca
point pattern
species association
