摘要
以江南油杉及其伴生树种在正常纯林和以伴生树种为优势种组成的混交林中的优势度为环境容纳量,用重要值百分数求取种间竞争系数,采用Lotka-Volterra竞争方程研究江南油杉林的共优种群(江南油杉与其伴生树种)种间竞争关系。结果表明:平衡时,江南油杉与其伴生树种相对优势度分别为65.55%和34.45%,说明未来江南油杉仍将处于支配地位。
In this paper, the percentages of importance value of Keteleeria cyclolepis and its associated species were regarded as the measure of the competitive parameter, and the dominant degree of normal stands were regarded as their environmental capacity. The final results of competition of inter-species were discussed with Lotka -Volterra equation, which showed that the relative dominant degree of Keteleeria cyclolepis and its associated species was 65.55% and 34.45% respectively when their balance was reached. The community was still dominated significantly by Keteleeria cyclolepis population.
出处
《江西农业学报》
CAS
2008年第2期46-47,59,共3页
Acta Agriculturae Jiangxi
基金
福建省教育厅科研资助项目(JA06062)
宁德师专资助项目(2006Y001)
关键词
江南油杉
伴生树种
混交林
竞争
Keteleeria cyclolepis
Associated species
Mixed forest
Competition
