作 者：
侯梅;贺勇;石林曌;余警;吴文昌;吴小鹤;周忠诚;王鹏程
单 位：
湖北生态工程职业技术学院;红安县林业局;华中农业大学园艺林学学院
关键词：
枫香(Liquidambar formosana Hance);森林群落;优势种群;重要值;生态位;鄂东北
摘 要：
以物种重要值作为生态位计测的状态指标,应用Levins生态位宽度、生态位相似性比例和生态位重叠公式对天台山景区枫香(Liquidambar formosana Hance)林群落优势种群生态位特征进行了研究。结果表明,枫香在各个资源位上均占优势,枫香、荚蒾(Viburnum dilatatum Thunb.)、木姜子(Litsea pungens Hemsl.)具有较大的生态位宽度,其Levins生态位宽度值分别为0.710 6、0.421 3、0.320 9,化香(Platycarya strobilacea Sieb.et Zucc.)、六月雪[Serissa japonica(Thunb.)Thunb.]的生态位宽度较小;生态位宽度较大的物种之间的生态相似性比例较大,例如枫香和荚蒾的生态位相似性比例值为0.538 7;生态位宽度较大的物种间生态位重叠值大,如枫香、荚蒾和木姜子。总体而言,生态位重叠值大于0.1的有16对,仅占总对数的28.57%,表明天台山枫香林中因利用相同的资源位而产生的种间竞争并不激烈,是一个稳定的森林群落。
译 名：
Niche Characteristics of Dominant Populations in Liquidambar formosana Forest in Northeast Hubei
作 者：
HOU Mei;HE Yong;SHI Lin-zhao;YU Jin;WU Wen-chang;WU Xiao-he;ZHOU Zhong-cheng;WANG Peng-cheng;Hubei Ecology Vocational College;Hongan County Forestry Bureau;College of Gardening and Forestry, Huazhong Agricultural University;
关键词：
Liquidambar formosana Hance;;forest community;;dominant populations;;important value;;Niche;;Northeast Hubei
摘 要：
The niche breadth, proportional similarity and overlap of the dominant populations in Liquidambar formosana Hance forests in Tiantai Mountain was calculated based on important values. The results were, L. formosana was predominant in each resource-niche; the niche breadth of L. formosana, Viburnum dilatatum Thunb., Litsea pungens Hemsl. was larger than the other species as Levins values was 0.710 6, 0.421 3, 0.320 9, respectively. The niche breadth of Platycarya strobilacea Sieb. et Zucc., Serissa japonica(Thunb.) Thunb. was relatively smaller. The niche similarity between the species with larger broad niche breadth was greater. For instance, the similarity of L. formosana and V. dilatatum was 0.538 7. In addition, the niche overlap between species with broader niche breadth was larger, such as L. formosana, V. dilatatum and L.pungens. In general, only 16 sets of populations had niche overlap values greater than 0.1, accounting for 28.57% of the total. Small niche overlap degree dectected in this study suggested less fierce interspecies competition in the forest, representing a stable community of the L. formosana forest of Tiantai Mountain.
