摘要
利用Ｌｅｖｉｎｓ、Ｈｕｒｌｂｅｒｔ生态位宽度公式和Ｐｉａｎｋａ生态位重叠公式测定了宝天曼落叶阔叶林１４种主要乔木和２２种主要灌木种群的生态位宽度和生态位重叠，并对生态位宽度、生态位重叠以及种间联结性的关系进行了初步探讨．结果表明，群落中主要优势种群的生态位宽度较大，乔木层主要优势种锐齿栎和漆树的Ｌｅｖｉｎｓ和Ｈｕｒｌｂｅｒｔ生态位宽度分别为１８．５２７、７．４８８和０．８８９、０．６８０，灌木层主要优势种哥兰叶、山葡萄和胡枝子的Ｌｅｖｉｎｓ和Ｈｕｒｌｂｅｒｔ生态位宽度分别为１８．９６４、１４．４７９、１３．２５１和０．９０８、０．７９９、０．７８５．具有相同或相似环境要求的物种间生态位重叠较大，生态位宽度较大的物种与其它种群间的生态位重叠较大．种间正联结性越强，其生态位重叠值越大，种间负联结性越强，其生态位重叠值越小．
The niche breadths
and overlaps of 14 main tree populations and 22 main shrub populations in deciduous broad
leaved forest in Baotianman, Henan Province were measured using the formulas described by
Levins, Hurlbert and Pianka, and the relationships among niche breadth, niche overlap and
interspecific association were discussed in this paper.The results show that the niche breadths
of main dominant species were greater. The Levins and Hurlbert's niche breadths of Quercus
aliena var. acuteserrata and Toxicodendron verniciflnum ,the main dominant species in
tree layer, were 18.527, 7.488 and 0.889, 0.680 respectively,and those of Celastrus
gemmatus, Vitis amurensis and Lespedeza bicolor , the main dominant species in shrub
layer, were 18.964, 14.479, 13.251 and 0.908, 0.799, 0.785 respectively. The niche overlaps
among the species with the same or similar environment requirements were great, while those
between the species with broad niche breadth and other species were much greater. The more
intense the positive association was, the larger the value of niche overlap was, and the more
intense the negative association was, the smaller the value of niche overlap was.
出处
《应用生态学报》
CAS
CSCD
1999年第3期265-269,共5页
Chinese Journal of Applied Ecology
基金
国家林业局重点资助项目
国家留学回国人员基金
关键词
落叶阔叶林
种群
生态位宽度
生态位重叠
宝天曼
Deciduous broad leaved forest, Population, Niche breadth, Niche overlap, Baotianman.
