摘要
在金华市郊不同生境设立30个样点。调查发现共有67种地面苔藓植物。计测了其中的54个主要种类的生态位重叠值和宽度,以生态位重叠值为指标,应用最小生成树法和主坐标排序法对它们进行分类。结果发现,金华市郊的地面生苔藓植物可被分成3个生态类群,苔藓植物种数(N)与生态位宽度(B)符合:N=27.304e 11.425B(R2=0.9915),大部分的地面生苔藓植物生态位宽度很窄。
Thirty sites were sampled in different habits in Jinhua suburb. Sixtyseven bryophyte species were recorded. Among them, fiftyfour main species were surveyed to obtain their coverages. Their niche overlaps and width were calculated. Based on their niche overlaps, the ordination plot of Principal Axes Analysis (PAA) and the Minimal Spanning Tree (MST) were drawn. The main results are as follows: (1)The main ground bryophytes could be divided into three ecological groups; (2)The relationship between the number of bryophyte species (N) and their niche width (B) are as follows: N = 27.304 e11.425 B(R2=0.991 5). Obviously, most bryophyte species have very narrow niche width.
出处
《广西植物》
CAS
CSCD
北大核心
2003年第2期112-120,共9页
Guihaia
基金
浙江师范大学重点学科"生态学"经费资助
