宝天曼落叶阔叶林种群生态位特征  

Niche characteristics of plant populations in deciduous broad leaved forest in Baotianman.

作　　者：史作民[1] 程瑞梅[1] 刘世荣[1] 

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所

出　　处：《应用生态学报》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

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.

关 键 词：落叶阔叶林 种群 生态位宽度 生态位重叠 宝天曼 

分 类 号：S718.542[农业科学—林学]