河南农业大学学报2017，Vol.51Issue(4)：495-502,8.
基于不同尺度和模型的小秦岭谱系结构研究
Study on phylogenetic structure in Xiaoqinling based on different scales and models
摘要
Abstract
We established 1 hm2 sample plot in Xiaoqinling nature reserve,used two statistical models (the constraint model and the non-constraint model) and analyzed the community phylogenetic structure in this region from three different scales 10,20,25 m.The results show:(1) under the non-constraint model,communities were phylogenetically clustered at all spatial scales;Using the constraint model,communities were phylogenetically clustered in 10 m,20 m scale and overdispersed in 25 m research scale.In contrast,community phylogenetic structures tend to disperse with the scale enlargement.Therefore,phylogenetic density dependence becomes the leading factor of the community compositionin the Xiaoqinling deciduous broad-leaved forest.(2) The study results suggest that the impact of space factors on community phylogenetic structure is much greater than that of the terrain factor.With the increasing of the reseach scale,space factors and terrain factors influence gradually increased.Space factors and terrain factors are closely related to different terrain caused by the space difference.Therefore,The space factors are the direct factors affecting the community phylogenetic structure,and terrain factors are the indirect factors.关键词
谱系结构/地形因子/空间因子/净谱系亲缘关系指数/最近种间亲缘关系指数Key words
phylogenetic structure/terrain factor/space factor/net relatedness index/nearest taxa index分类
农业科技引用本文复制引用
牛帅,毕帅帅,王雪颖,韩军旺,贾宏汝,叶永忠,袁志良..基于不同尺度和模型的小秦岭谱系结构研究[J].河南农业大学学报,2017,51(4):495-502,8.基金项目
河南省科技攻关项目(132102110133) （132102110133）
河南省教育厅科学技术研究重点项目(14A180013) （14A180013）
