南雄紫色砂页岩侵蚀区典型灌木丛物种多样性及种群分布格局  

Research on Plant Diversity and Distribution Patterns in Purple Sand Shale Erosion Area of Nanxiong City

作　　者：许东先 张凌宇 章驰 钱万惠 李毓琦 赵庆 XU Dongxian;ZHANG Lingyu;ZHANG Chi;QIAN Wanhui;LI Yuqi;ZHAO Qing(Guangdong Provincial Key Laboraroty of Silviculture,Protection and Utilization,Guangzhou 510520,Guangdong;Guangdong Academy of Forestry,Guangzhou 510520,Guangdong)

机构地区：[1]广东省森林培育与保护利用重点实验室,广东广州510520 [2]广东省林业科学研究院,广东广州510520

出　　处：《温带林业研究》2024年第4期42-49,共8页Journal of Temperate Forestry Research

基　　金：广东省林业科技创新项目(粤北紫色砂页岩侵蚀区生态修复关键技术研究2022KJCX013)。

摘　　要：【目的】进一步开展紫色砂页岩侵蚀区生态修复,更深度地了解其区系成分。【方法】对紫色砂页岩侵蚀区主要分布地南雄市的主要植被类型灌丛进行随机样方调查,对样方内物种组成、物种多样性以及优势物种分布格局和种间关联性进行分析。【结果】共计调查样方20个,样方内物种共计29种,隶属于20科29属,区系成分以热带成分为主,但也有一定的温带成分;Margelef指数、Simpson指数、Shannon-Wiener指数、Pielou指数的平均值分别为1.673 8、0.716 6、1.512 7、0.869 6;优势物种的种群分布格局以聚集性分布为主;物种间种间联结系数更多地表现出负相关。【结论】样地内物种较为丰富,区系组成成分相对较为复杂;灌木丛中物种多样性指数均较高;优势种中大仅少数种为均匀性分布,且灌木丛优势种种间联结性较差,物种共存的较少。研究结果可为下一步生态修复植物筛选及配置提供科学依据。【Objective】The purpose of this paper was to further carry out ecological restoration in the erosive area of purple sand shale and to deeply understand its floristic composition.【Method】The species composition,species diversity,distribution pattern of dominant species and interspecific correlation were analyzed in a random quadrat survey of the main vegetation types in Nanxiong City,the main distribution area of purple sand shale erosion area.【Result】A total of 20 samples were investigated,with 29 species belonging to 29 genera and 20 families.The floristic components were mainly tropical,but some temperate components were also found.The average values of Margelef index,Simpson index,Shannon-Wiener index and Pielou index were 1.6738,0.7166,1.5127 and 0.8696,respectively.The population distribution pattern of the dominant species is mainly clustered.The interspecific association coefficient between species showed more negative correlation.【Conclusion】The species in the plot are abundant and the floristic components are relatively complex.The species diversity index of shrubs was higher.Only a few of the dominant species were distributed uniformly,and the association between the dominant species of shrubs was poor,and the species co-existed less.The research results can provide scientific basis for the selection and arrangement of plants in the further ecological restoration.

关 键 词：紫色砂页岩侵蚀区 灌木丛 物种多样性 种群分布格局 

分 类 号：Q948[生物学—植物学]