农业现代化研究2016，Vol.37Issue(6)：1198-1205,8.DOI:10.13872/j.1000-0275.2016.0126
桂西北喀斯特峰丛洼地典型灌丛植物种间关系及环境解释
The interspeciifc associations between dominant species and their environmental interpretation under a typical shrub community in karst peak-cluster depression regions of Northwest Guangxi
摘要
Abstract
Study on the community structure characteristics and dynamics of typical shrub community is important to understand the coexistence mechanism of shrub species in the karsts area. In this study, the interspeciifc associations among 435 species pairs of the 30 dominant woody species of shrub community were analyzed in typical karst peak-cluster depression in Northwest of Guangxi Province. Variance analysis showed that the interspeciifc correlations of the shrub community was signiifcantly positive. The χ2 test showed that 249 pairs were positive and 179 pairs were negative correlationship. The correlation ratio was 1.38 among the 435 species pairs, indicating that the associations among species were relatively strong. The Spearman’s rank correlation coefifcient tests had higher sensitivity than Pearson’s correlation coefficient test in describing the species associations, suggesting that results of the Spearman’s rank correlation coefifcient tests had more species pairs to reach the signiifcant level among the 435 species pairs than did Pearson’s correlation coefifcient test. According to the species adaptability to the environment, the leading ecological factors and redundancy analysis (RDA) sort, the 30 dominant species were divided into three ecological species groups:the ifrst ecological species group was represented byVitexnegundo, the second ecological species group byTirpitzia ovoidea andViburnum triplinerve, and the third ecological species group byMicromelum integerrimum. In the practice of the vegetation restoration and afforestation in karst region, it is necessary to fully consider the characteristic of ecological species habitat and the uniqueness of the karst environment, and to choose the same ecological species group for proper plantation on the basis of interspeciifc relationship.关键词
喀斯特/灌丛群落/优势种/种间关系/生态种组Key words
Karst/shrub community/dominant species/interspeciifc association/ecological species group分类
农业科技引用本文复制引用
郑生猛,盖爽爽,谢强,苏以荣,陈香碧,胡亚军,何寻阳..桂西北喀斯特峰丛洼地典型灌丛植物种间关系及环境解释[J].农业现代化研究,2016,37(6):1198-1205,8.基金项目
中国科学院科技服务网络计划（KFJ-EW-STS-092）；国家自然科学基金项目（31270551）。 （）
