林业科学Issue(10)：1-7,7.DOI:10.11707/j.1001-7488.20141001
广西大明山格木种群的空间分布格局与数量动态特征
Spatial Patterns and Quantitative Dynamics of Erythrophleum fordii Populations at Damingshan Mountain,Guangxi
摘要
Abstract
A one-hectare plot was set in a well-conserved forest of Erythrophleum fordii at Damingshan Nature Reserve, Guangxi Autonomous Region. The four aspects of population spatial pattern,age structure,static life table and survival curve were investigated to study the spatial distribution pattern,quantitative characteristics and dynamics of E. fordii populations. The results showed that the spatial distribution pattern tended to be cluster on the whole,but changed from cluster at young and middle-aged stages to random at mature age stage. The population age structure shaped like pyramid, indicating that the population of E. fordii was increasing,and the population was stable even taking potential artificial disturbance into account. Seedlings and saplings were abundant in the population with high mortality,and the individual number decreased severely from age class three to Age Class four,and this period was thus considered as milestone in E. fordii population dynamics. Thereafter the mortality rate in higher age classes was obviously lower with low rate of individuals. Population survival analysis showed that mortality rate,mortality density and hazard rate declined as age classes increased. Competition at young stage was stronger than that at middle and mature stages,and the survival curve of this tree species fitted the Deevey Type Ⅲ.关键词
格木/种群生命表/年龄结构/种群动态/广西大明山Key words
Erythrophleum fordii/static life table/age structure/population dynamics/Damingshan Mountain in Guangxi分类
农业科技引用本文复制引用
赵志刚,郭俊杰,曾杰,徐建民..广西大明山格木种群的空间分布格局与数量动态特征[J].林业科学,2014,(10):1-7,7.基金项目
林业公益性行业科研专项“青皮、格木、檀香紫檀良种选育与高效培育技术研究”(201204301－2) （201204301－2）
中央级公益性科研院所基本科研业务费专项资金项目“珍贵树种多目标经营技术研究”(RITFKYYW2010－05)。 （RITFKYYW2010－05）
