安图县天然次生林蒙古栎种群动态分析
Dynamic Analysis of Quercus mongolica Fisch.ex Ledeb.Population in Natural Secondary Forests of Antu County
贺梦莹 1孙一博2
作者信息
- 1. 河北省塞罕坝机械林场阴河分场,河北承德 068450
- 2. 吉林省林业调查规划院,长春 130022
- 折叠
摘要
利用2021年安图县标准地数据,分析天然次生林中蒙古栎的种群发展动态.结果表明,蒙古栎种群在不同林分中受个体竞争和环境影响,存活数量差异较大.种群径级结构近似呈倒J形分布,属于增长型种群.种群死亡率在各龄级波动较小,存活曲线随龄级增加而逐渐下降,且变化波动不大.蒙古栎种群存活曲线更符合Deevey-Ⅱ型(指数函数),各龄级的死亡率基本相同,局部稍有波动.
Abstract
Using the standard land data of Antu County in 2021,the population development dynamics of Quercus mongolica Fisch.ex Ledeb.in natural secondary forests were analyzed.The results indicate that the population of Quercus mongolica Fisch.ex Ledeb.varies greatly in survival numbers among different stands due to individual competition and environmental influences.The population size distribution is ap-proximately inverted J-shaped and belongs to a growing population.The mortality rate of the population fluctuates less at each age level,and the survival curve gradually decreases with increasing age levels,with little fluctuation.The survival curve of Quercus mongolica Fisch.ex Ledeb.population is more in line with Deevey-Ⅱ type(exponential function),and the mortality rate of each age group is basically the same,with slight fluctuations in local areas.
关键词
蒙古栎/种群/静态生命表/安图县Key words
Quercus mongolica Fisch.ex Ledeb./Population/Static life table/Antu County引用本文复制引用
出版年
2024
NETL
NSTL
万方数据