屏南水松天然林主要种群的种间竞争  

The interspecific competition of main population in Glyptostrobus pensilis natural forest in Pingnan County

作　　者：郑世群[1] 刘金福[1] 吴则焰[1] 付达靓[1] 何中声[1] 代立春[1] 陆继策 

机构地区：[1]福建农林大学林学院,福建福州350002 [2]屏南鼓峰国有林场,福建屏南352300

出　　处：《福建林学院学报》2008年第3期216-219,共4页Journal of Fujian College of Forestry

基　　金：福建省科技厅科学基金资助项目(2006F5009)

摘　　要：采用Lotka-Volterra竞争方程研究水松天然林种群与伴生树种间的竞争,用重要值百分数求取种间竞争系数,以优势种群在正常纯林中的优势度作为其容纳量。结果表明,平衡时水松和伴生树种的相对优势度分别为69.21%和30.79%,说明水松种群在天然林中仍处于支配地位,但研究发现,水松林有逐渐退化减少的趋势。The competition of Glyptostrobus pensilis natural forest and its associated species were discussed with the Lotka-Volterra equation. Interspecific competition modulus was get hold of by using importance value. The dominant degrees of predominance plant population in normal pure forest were regarded as their environmental capacity. It shows that the relative dominant degree of G. pensilis and its associated species is 69.21% and 30.79% respectively when reaching their balance. The mixed trees can jointly dominate this community, and the whole community is controlled by G. pensilis population. But the number of G. pensilis is constantly decline.

关 键 词：屏南 水松 种群 种间竞争 重要值 

分 类 号：S718.54[农业科学—林学]