白水江自然保护区龙头竹种群年龄结构的初步研究

生物种群的数量具有相对稳定性。国内外许多植物生态学家对多种竹子进行了很多有成效的研究。但对大熊猫所食的龙头竹研究甚少,特别是对其立竹年龄结构规律的研究还是一项空白。鉴于发现大熊猫活动区主食龙头竹有开花现象,为了掌握其种群动态,本文依据笔者1988年的调查资料,以甘肃南部白水江自然保护区内大熊猫的主食龙头竹林为对象,讨论了龙头竹种群立竹年龄结构规律。

PRELIMINARY STUDY ON THE AGE STRUCTURE OF FARGESIA DRACOCEPHALA POPULATION IN BAISHUIJIANG NATURE RESERVE

In the paper, appling the method of "statie state life table", the dynamic states of the age structure of Fargesia dracocephala population in Baishuijiang Nature Reserve have been discussed. There are 5 types of age structure, the minimum live ages of bamboo whips and culms are different within different types of age structure. The general trend of this population will be flowering and death.The laws of the age structure of Fargesia dracocephala stable population; The 1-4 year old culm numbers account for 70% of the total culms, and each age culm numbers of 1-4 year old account for 16-20% of the total culms.The obvious factor resulting in the dynamic change in the age structure of Fargesia dracocephala population in the Baishuijiang Nature Reserve is itself.