路域和保护区油松林种间关联比较研究  

Comparative study of interspecific association within the Pinus tabulaeformis forest in the road area and the natutre reserve

作　　者：高凤如 巨天珍[1] 杨斌[1] 任艺彬 王振乾[1] 刘洋洋[1] 

机构地区：[1]西北师范大学地理与环境科学学院,兰州730070

出　　处：《应用与环境生物学报》2016年第6期1031-1039,共9页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学资金项目(41161080);甘肃省科技计划项目(2010GS05134)资助~~

摘　　要：根据大量野外调查和室内测算,运用多物种方差比率（VR）、χ~2检验、Pearson相关系数和Spearman秩相关系数以及关联测度（OI指数、AC值和点相关系数）等7个指标,对宝天高速公路路域以及与该路段毗邻的小陇山国家级自然保护区油松（Pinus tabulaeformis）群落进行种间关联的对比研究,为确定群落动态发展提供理论依据.结果表明：（1）路域生态带油松群落的总体关联性表现为显著负相关,保护区油松群落的总体关联性表现为显著正相关,保护区油松群落较路域生态带油松群落稳定;（2）χ~2检验、Pearson相关系数和Spearman秩相关系数表明路域生态带与保护区油松群落主要物种与伴生物种多以负相关为主,说明不同生境主要种群对群落内环境的要求不同;（3）关联测度值表明路域生态带油松群落中正关联程度低于保护区,负关联程度高于保护区,且多种群表现为独立分布;（4）依据路域油松林和保护区油松林种间关联度性质的不同,将路域生态带和保护区组成群落的主要物种分别划分为3个生态组：正关联生态组、负关联生态组和独立生态组,与保护区相比,路域生态带独立生态种组物种较多,显示了群落成员之间的生态协调性不同.综上表明路域生态带油松群落种间关系不密切,独立种对较多;群落内环境不够协调,种间搭配关系还不够稳定.Studies of interspecific association are helpful to explore the relationship between community and environment, and the interspecific relationship within the community. They can also provide theoretical bases for defining community dynamic development. This research compared the interspecific association between the Pinus tabulaeformis communities in the Baotian Expressway and those in the road of Xiaolong Mountain National Natural Reserve based on investigation results of seven indexes including multi species variance ratio （VR）, Z2-test, Pearson correlation coefficient, Spearman rank correlation coefficient and correlation measure （OI index, AC value, and point correlation coefficient）. The results showed a general significant negative correlation in the P. tabulaeformis communities in the expressway but a general significant positive correlation in those in the reserve. The stability of P. tabulaeformis communities was higher in the reserve than in the expressway. Results of the x2 test, Pearson correlation coefficient and Spearman rank correlation coefficient showed a mostly negative correlation of the major species and associated species in the expressway and the reserve. The communities in different habitats require various environment. The correlation measure test showed that the positive association degree of the P. tabulaeformis communities in the expressway was lower than that in the reserve and the negative association degree was higher than that in the reserve. Multiple species were characterized by independent distribution. According to the different interspecific association of the P. tabulaeformis in the road area and the reserve, the main species in the road and the reserve areas were classified into three ecological groups： the positively correlated ecological group, the negatively correlated ecological group and independent ecological group. Compared with the reserve, the road area had more species of the independent ecological communities, indicating the differences of the ecological

关 键 词：种间关联 生态种组 油松群落 宝天高速公路 小陇山自然保护区 

分 类 号：Q948.1[生物学—植物学]