华南农业大学学报2016，Vol.37Issue(4)：82-89,8.DOI:10.7671/j.issn.1001-411X.2016.04.014
鹞落坪半夏生境地主要草本种群生态位特征
Niche characteristics of main herbaceous populations in habitat of Pinella yaoluopingensis
摘要
Abstract
[Objective]The adaptability and resources utilization of main herbaceous populations in habitat of Pinella yaoluopingensis were studied, with an aim to provide guidance and suggestions for protecting and exploiting P. yaoluopingensis. [Method] The herb layer in habitat communities of P. yaoluopingen-sis, an endemic species in Anhui Province was investigated. The niche breadths and overlaps of main herbaceous populations in the communities were measured using Levins-niche breadth, Shaanon-Wiener-niche breadth and Levins-niche overlap indices. [Result]Among all 17 main herbaceous populations in habitat communities of P. yaoluopingensis, the niche breadths of most populations were wide. Parathe-lypteris glanduligera, Melica scabrosa and Macleaya cordata had the widest niche breadth, meanwhile, they were also the dominant populations of the herb layer. Arthraxon hispidu, Oenothera stricta and Erig-eron annuus had the narrowest niche breadth, followed by P. yaoluopingensis. The important values and niche breadth Bi, Bi′of main populations were highly significantly correlated, and the correlation coeffi-cients were 0. 807 ( Sig. =0. 000 ) and 0. 707 ( Sig. =0. 002 ) respectively. Of all population pairs, the population pairs whose niche overlap values were below 0. 4 accounted for 83. 46%, the population pairs whose niche overlap values were 0 accounted for 38. 60%, but the population pairs whose niche overlap values were above 1. 0 only accounted for 1. 10%. There was no direct relationship between niche breadths and niche overlaps of main herbaceous populations. [Conclusion]There is little similarity in ec-ological characteristics for main herbaceous populations in habitat of P. yaoluopingensis. There is no ob-vious tendency in resource sharing—the main herbaceous populations grow in the communities harmoni-ously, but there is no advantage in niche breadth for P. yaoluopingensis which is in associated status.关键词
鹞落坪半夏/草本种群/生态位宽度/生态位重叠Key words
Pinella yaoluopingensis/herb population/niche breadth/niche overlap分类
农业科技引用本文复制引用
欧祖兰,王占军,陈延松,沈章军,楚爱香,王玲玲,齐璐璐..鹞落坪半夏生境地主要草本种群生态位特征[J].华南农业大学学报,2016,37(4):82-89,8.基金项目
安徽省自然科学基金(1208085MC54) （1208085MC54）
