太行山区物种生态位特征以及种间相关性对比分析Comparative analysis of niche characteristics of the species and interspecific correlation in Taihang mountains
王进,冯佳伟,牛帅,赵利新,叶永忠
摘要(Abstract):
对河南省焦作市太行山1 hm~2样地内的优势物种进行生态位宽度指数(B(sw)i)、生态位相似性比例指数(Cih)、生态位重叠指数(Lih和Lhi)等定量分析,并用点格局做种间空间格局分析。结果表明,(1)样地内优势物种生态位宽度的排序为:栓皮栎>刺槐>油松>黄栌>连翘>牡荆>扁担杆,生态位宽度值存在较大的差异,主要是植物本身生物生态学特性决定的。(2)样地内各优势物种种对的生态位相似比例值较高,生态位重叠值普遍较低。群落中生活习性相似的物种,具较高的生态位相似比例和生态位重叠。(3)样地内优势物种间存在负相关性的种对共32对,有6对物种的种间负相关尺度相加超过10 m,说明该群落优势物种在生长过程中存在某种竞争。(4)生态位重叠并不能反映种间竞争,点格局的分析方法弥补了生态位对于种间关系研究的不全面性,较全面地反映了群落中优势物种的种间关系。
关键词(KeyWords): 优势物种;生态位;点格局;种间关系
基金项目(Foundation): 国家科技支撑计划项目(2008BAC39802)
作者(Author): 王进,冯佳伟,牛帅,赵利新,叶永忠
DOI: 10.16445/j.cnki.1000-2340.2016.02.007
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