干旱区生态环境知识资源中心(Arid): 桂西南平果喀斯特山地植物群落高度变化

Arid

	桂西南平果喀斯特山地植物群落高度变化
其他题名	Height variations among plant communities in the karst mountains of Pingguo, southwest Guangxi
	欧芷阳; 彭玉华; 何琴飞; 黄小荣; 庞世龙; 申文辉
来源期刊	中南林业科技大学学报
ISSN	1673-923X
出版年	2020
卷号	40 期号:7 页码:25-
中文摘要	【目的】研究桂西南平果县喀斯特山地灌丛、乔灌过渡林和次生乔木林3个群落的优势木本植物最大高度性状随演替进程的变化,认识环境筛选和物种相互关系在群落构建中的作用。【方法】采用Kruskal-Wallis检验不同演替阶段的植物性状差异、Duncan's法进行多重比较;进一步采用性状梯度分析法将优势种最大高度性状值分解为alpha组分和beta组分,分析最大高度在群落内和群落间的变化。【结果】随着群落由灌丛向次生乔木林的演替,植物最大高度增加,3个群落的最大高度差异显著(P < 0.05)。灌丛群落的beta值为1.59,乔灌过渡林的beta值2.64,次生乔木林的beta值为3.00,3个群落的beta值的极差分别为0 .37、0.47和1.13。灌丛群落的a值分布在-0.13 ~ 0.16之间,乔灌过渡林在-0.49 ~ 0.76之间,次乔木林在-0.72 ~ 0.83之间,3个群落a值的极差分别为0.29、1.25和1.55。从整个调查区域来看,beta值的极差大于alpha值,环境变化对群落形成的作用大于群落内种间相互作用,灌丛的变化与整个调查区域一致。乔灌过渡林和次生乔木林alpha组分的极差大于beta组分,这两个群落的种间相互作用大于环境变化。灌丛的bi平均值小于0,该群落最大高度种内变异不能反映物种沿高度梯度的变化趋势。乔灌过渡林和次生乔木林的bi平均值均落在[0,1]区间 ,这两个群落种内最大高度差异引起的变化小于群落水平的变化。【结论】调查区域灌丛的形成主要受环境因素的影响,乔灌过渡林和次生乔木林的形成和发展主要受群落内种间相互作用的影响,研究结果可为喀斯特石漠化地区的植被恢复提供可靠的理论支持。
英文摘要	【Objective】To detect the effect of environmental screening and species interrelationship on plant community assembly, we investigated the dominant woody species distributed in the shrubland, forest-shrub transition forest, and secondary forest in the karst mountains of Pingguo, southwest Guangxi by analyzing the maximum heights changes with succession.【Method】Kruskal- Wallis method and Duncan's multiple comparison analysis method was used to test the differences in the maximum heights among the succession stages. Trait-gradient analysis was used with the maximum heights were divided into alpha and beta components to analyze the variations along the succession gradient as well as within the communities.【Result】A an increasing trend was observed in the maximum height along the shrubland to the secondary forest. There were significant differences in the maximum heights of all three communities. The mean beta values of shrubland, forest-shrubland transition community, and secondary forest were 1.59, 2.64 and 3.00, respectively. The Ranges of beta value of the three communities were 0.37, 0.47, and 1.13, respectively. The alpha value ranges of the shrubland was -0.13 to 0.16, the forest-shrubland transition community was -0.49 to 0.76, and the secondary forest was-0.72 to 0.83. The ranges of alpha value of the three communities were 0.29, 1.25, and 1.55, respectively. For the entire survey area, the range of beta value were higher than the alpha component, implying that the maximum height variations of the dominant species were more influenced by the environmental changes than the interspecific interactions within communities. The maximum height changes within the shrubland were similar to those of the entire survey area. However, the Range of alpha value of forest-shrubland transition community and secondary forest were higher than that of beta component, suggesting that interspecific interactions have a stronger effect within the community. The bi mean value of shrubland was less than zero, indicating that the maximum height intraspecific variation of shrubland does not reflect the species trend along the height gradient. The bi mean value of forest-shrubland transition community and secondary forest was between 0 and 1, showing that the maximum height changes brought about by the intraspecific difference were less than those at the community level. 【Conclusion】In the studied area, the shrubland is mainly affected by environmental factors, while forest-shrubland and secondary forests are mainly influenced by the interspecific interactions within the community. The findings can provide reliable theoretical support for the vegetation restoration in the karst rocky desertification area.
中文关键词	植被演替 ; 性状梯度分析法 ; 喀斯特山地 ; 最大高度 ; alpha 性状值 ; beta 性状值
英文关键词	vegetation succession trait-gradient analysis karst mountains maximum height alpha trait values beta trait values
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:6818944
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354141
作者单位	欧芷阳, 广西壮族自治区林业科学研究院, 南宁, 广西 530002, 中国. 彭玉华, 广西壮族自治区林业科学研究院, 南宁, 广西 530002, 中国. 何琴飞, 广西壮族自治区林业科学研究院, 南宁, 广西 530002, 中国. 黄小荣, 广西壮族自治区林业科学研究院, 南宁, 广西 530002, 中国. 庞世龙, 广西壮族自治区林业科学研究院, 南宁, 广西 530002, 中国. 申文辉, 广西壮族自治区林业科学研究院, 南宁, 广西 530002, 中国.
推荐引用方式 GB/T 7714	欧芷阳,彭玉华,何琴飞,等. 桂西南平果喀斯特山地植物群落高度变化[J],2020,40(7):25-.
APA	欧芷阳,彭玉华,何琴飞,黄小荣,庞世龙,&申文辉.(2020).桂西南平果喀斯特山地植物群落高度变化.中南林业科技大学学报,40(7),25-.
MLA	欧芷阳,et al."桂西南平果喀斯特山地植物群落高度变化".中南林业科技大学学报 40.7(2020):25-.