南岭自然保护区乳阳片区珍稀植物地理分布与环境因子关联分析  

Geographical Distribution of Rare Plants and the Correlation Analysis with Key Environmental Factors in Ruyang Area of Nanling Nature Reserve,Guangdong Province

作　　者：李乐 邝楚填 裴男才[1] 杨锦昌[1] 高丙涛 张晔 林少锋 李贵宣 刘嘉鸿 王淳 郝泽周 LI Le;KUANG Chutian;PEI Nancai;YANG Jinchang;GAO Bingtao;ZHANG Ye;LIN Shaofeng;LI Guixuan;LIU Jiahong;WANG Chun;HAO Zezhou(Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,Guangdong;School of Resources and Planning,Guangzhou Xinhua University,Guangzhou 510520,Guangdong;Guangzhou Urban Planning&Design Survey Research Institute,Guangzhou 511400,Guangdong)

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520 [2]广州新华学院资源与城乡规划学院,广东广州510520 [3]广州市城市规划勘测设计研究院,广东广州511400

出　　处：《温带林业研究》2024年第2期17-24,共8页Journal of Temperate Forestry Research

基　　金：广东省林木种质资源调查项目(GDZZDC20228702);广州新华学院校级科研基金项目(2019KYYB10)。

摘　　要：【目的】探究南岭自然保护区乳阳片区珍稀濒危植物的分布规律及对环境因子的响应。【方法】借助3S技术和系统采样方法,在南岭自然保护区乳阳片区确定了7条样线和9个样方,共采集植物样本1766份。在此基础上对珍稀植物进行鉴定与物种分析,并建立保护区珍稀植物三维地理空间分布模型。经统计分析,从植物区系和地理分布2个方面阐明南岭自然保护区乳阳片区珍稀植物分布特征。【结果】南岭国家级自然保护区乳阳片区共调查珍稀濒危植物、重点保护植物与建议保护植物27种,隶属于20科26属。其中,20个科划分为10个分布区类型,热带分布型占8科,温带分布型占10科;26属划分为11个分布区类型,热带分布型占7属,温带分布型占12属,中国特有分布型占7属。随着地理位置的变化,珍稀植物物种组成和相似性均发生变化。垂直分布上,南岭珍稀植物主要分布在海拔500~750 m和1250~1500 m,分别占珍植物种类的40.74%和48.15%;随着坡度上升物种数随之下降。水平分布上,保护区边缘物种丰富度较低,内部区域物种丰富,且物种相似性随水平距离增加而减小。【结论】南岭自然保护区乳阳片区内珍稀植物具有温带向热带过渡性特点,珍稀植物分布受经纬度、海拔位置、坡度坡向等多种环境因素的影响。为保护这些珍稀植物,需针对不同区域制定不同的保护策略,加强监测与管理,确保生物多样性可持续发展。【Objective】The objective of this study is to investigate the distribution pattern of rare and endangered plants and their response to environmental factors in Ruyang area of Nanying Nature Reserve.【Method】Based on the 3S technology and the systematic sampling method,seven line transects and nine quadrats were identified in this area.Thus,a total of 1766 plant samples were collected.Then,identification and species analysis were conducted on the rare plants.A three-dimensional geospatial distribution model of the rare plants in the reserve was established.Based on statistical analysis,the distribution characteristics of the rare plants in the area were clarified in terms of flora and geographic distribution.【Result】A total of 27 plant types were identified,involving rare and endangered plants,key protected plants and suggested protected plants.These plants belonged to 20 families and 26 genera.The 20 families were divided into 10 distribution area types,with 8 and 10 families characterized as the tropical and temperate distribution types,respectively.The 26 genera were divided into 11 distribution area types,with 7,12 and 7 genera characterized as the tropical,temperate and Chinese endemic distribution types,respectively.The species composition and similarity of rare plants varied with geographic locations.Vertically,the rare plants in Nanling were mainly distributed in the altitudes of 500-750 m and 1250-1500 m,accounting for 40.74%and 48.15%of the rare plants,respectively.The number of species decreased with the rise of the slope.Horizontally,species richness was lower at the edge of the reserve.In contrast,species richness was higher in the internal area.Species similarity decreased with the increase of horizontal distance.【Conclusion】The rare plants in Ruyang Area of Nanyang Nature Reserve were characterized by the transition from the temperate distribution type to the tropical distribution type.The distribution of the rare plants was affected by various environmental factors such as latitude,lo

关 键 词：南岭自然保护区 珍稀植物 分布 区系 环境因子 

分 类 号：Q948.11[生物学—植物学]