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

作　　者：王进[1] 冯佳伟[1] 牛帅[1] 赵利新 叶永忠[1] 

机构地区：[1]河南农业大学,河南郑州450000 [2]焦作市林场,河南焦作454191

出　　处：《河南农业大学学报》2016年第2期181-188,共8页Journal of Henan Agricultural University

基　　金：国家科技支撑计划项目(2008BAC39802)

摘　　要：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。Quantitative analysis was carried out on the niche breadth （B〈,w）i） , niche similarity （Lib and Lhi） , and niche overlap （Cih） of the dominant species of 1 hm2 plot in Taihang Mountains, were used by quantitative analysis with dominant species. In the mean time, point pattern analysis was car- ried out to study of the spatial distribution pattern. The results show that ： （ 1 ） in the plot, the order of niche breadth values is： Quercus variabilis B1. 〉 Robinia pseudoacacia Linn. 〉 Pinus tabuliformis Carr. 〉 Cotinus coggygria Scop. 〉 Forsythia suspensa （ Thunb. ） 〉 Vitex negundo L. 〉 Vitex negundo L. Be- cause of the biological and ecological characteristic of plants, there exists bigger difference in the niche breath. （2） The niche similarity value of dominant species is high, while the niche overlap value is generally low. In the Quercus variabilis B1. forest, the species with similar ecology characters have higher niche similarity and niche overlap values. （3） A total of 32 dominant species pairs have a nega- tive correlation, and there are 6 species pairs negative scale added over 10m, which shows that the dominant species in the community have some competition to each other. （4） The niches overlap is not a reflection of interspecific competition. Point pattern analysis method can make up for the niche for comprehensive research on the relationship between species, and it accurately reflects the interspecificrelationship of main species of Quercus variabilis B1. community.

关 键 词：优势物种 生态位 点格局 种间关系 

分 类 号：S718.5[农业科学—林学]