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当前位置: 首页 > 文章 > 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 农业现代化研究 2016,37 (6) 1198-1205
Position: Home > Articles > The interspecific associations between dominant species and their environmental interpretation under a typical shrub community in karst peak-cluster depression regions of Northwest Guangxi Research of Agricultural Modernization 2016,37 (6) 1198-1205

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

作  者：
郑生猛;盖爽爽;谢强;苏以荣;陈香碧;胡亚军;何寻阳
单  位：
广西师范大学生命科学学院;中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室
关键词：
喀斯特;灌丛群落;优势种;种间关系;生态种组
摘  要：
喀斯特峰丛洼地典型灌丛群落物种种间关系分析对于深入认识群落结构特征及群落动态,探讨喀斯特灌丛物种共存机制具有重要的意义。本研究在详细的野外调查基础上,基于2×2列联表,采用方差比率法、χ2检验、Pearson相关系数检验和Spearman秩相关系数检验等方法,对桂西北典型喀斯特灌丛群落的30个木本植物优势种进行了种间关联和相关性分析;结合冗余分析(RDA)进行生态种组划分。结果表明,用来检测VR值偏离1的显著性W=195.31>χ2 0.05(100),说明群落总体间呈显著正关联;χ2检验中种对间正负关联比为1.38,反映群落种间联结性较强。种间相关分析中,Pearson相关系数检验与Spearman秩相关系数检验种间相关显著率分别为42.99%,51.03%,说明Spearman秩相关系数检验的灵敏度最高,更能反映群落种间相关性。根据30个优势种的环境适应性和主导生态因素,结合RDA排序,可将它们划分为3个生态种组,分别为黄荆生态种组,米念芭、三脉叶荚蒾生态种组,小芸木生态种组。在喀斯特植被恢复和植树造林的实践中,应充分考虑物种的生态习性和喀斯特生境的独特性,利用种间关系合理选择同一生态种组物种进行搭配种植。
译  名：
The interspecific associations between dominant species and their environmental interpretation under a typical shrub community in karst peak-cluster depression regions of Northwest Guangxi
作  者：
ZHENG Sheng-meng;GAI Shuang-shuang;XIE Qiang;SU Yi-rong;CHEN Xiang-bi;HU Ya-jun;HE Xun-yang;College of Life Science,Guangxi Normal University;Key Laboratory of Agro-ecological Processes in Subtropical Region,Institute of Subtropical Agriculture,Chinese Academy of Sciences;Huanjiang Observation and Research Station for Karst Ecosystems,Chinese Academy of Sciences;
关键词：
Karst;;shrub community;;dominant species;;interspecific association;;ecological species group
摘  要：
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 interspecific associations among 435 species pairs of the 30 dominant woody species of shrub community were analyzed in typical karst peakcluster depression in Northwest of Guangxi Province. Variance analysis showed that the interspecific correlations of the shrub community was significantly 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 coefficient tests had higher sensitivity than Pearson's correlation coefficient test in describing the species associations, suggesting that results of the Spearman's rank correlation coefficient tests had more species pairs to reach the significant level among the 435 species pairs than did Pearson's correlation coefficient 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 first ecological species group was represented by Vitex negundo, the second ecological species group by Tirpitzia ovoidea and Viburnum triplinerve, and the third ecological species group by Micromelum 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 interspecific relationship.

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