摘要
采用相邻格子样方法取样数据,应用方差/均值比的t检验法、负二项参数、格林指数、Cassie指标、扩散指数、聚集度指标、平均拥挤度、聚块性指数等方法,研究了贵州雷公山秃杉种群的空间分布格局及其动态.结果表明:秃杉种群空间格局为聚集分布;从幼苗到大树,其聚集程度和规模逐渐减小,大树呈均匀分布.
Field data were sampled by the method of contiguous grid quadrate,and t-test of s2 / ratio,negative binomial parameter,green＇s index,cassie＇s index,dispersion index,clumping index,mean crowding index and patchiness index were used to analyze the distribution pattern and its dynamics of Taiwania flousiana Gaussen Population.The result showed that the distribution pattern was clustering.From sapling to grown-up tree,the clustering degree and clustering size was decreasing,while the dig trees had a even distribution.
出处
《凯里学院学报》
2011年第3期72-75,共4页
Journal of Kaili University
基金
黔教科"箭竹对秃杉种群的影响"(20090081)
凯里学院2011年校级精品课程建设项目(JPKC201106)
关键词
秃杉
种群
空间格局
聚集强度
Taiwania flousiana Gaussen
population
distribution pattern
clustering intensity
