海口市城市森林结构及植物多样性指标相关性分析  

Urban forest community structure and correlation analysis on the plant diversity index in Haikou City, China

作　　者：何荣晓[1,2] 杨帆[1,2] 崔明 HE Rongxiao;YANG Fan;CUI Ming(College of Forestry,Hainan University,Haikou 570228,Hainan,China;Hainan Key Laboratory for Biology of Tropical Ornamental Plant Germplasm,Hainan University,Haikou 570228,Hainan,China;Hebei Forestry Survey and Design Institute,Shijiazhuang 050051,Hebei,China)

机构地区：[1]海南大学林学院,海南海口570228 [2]海南大学海南省热带特色花木资源生物学重点实验室,海南海口570228 [3]河北省林业调查规划设计院,河北石家庄050051

出　　处：《浙江农林大学学报》2019年第6期1142-1150,共9页Journal of Zhejiang A&F University

基　　金：海南省自然科学基金资助项目（317003）;海南省重点研发计划项目（ZDYF2018181）;海南大学科研启动基金项目（KYQD(ZR）1839）

摘　　要：选取海口市主建成区随机建立的235个植物样方进行调查,评价其结构特征,分析其植物多样性指数相关性。结果表明:①主建成区常见植物共283种隶属于72科218属,其中,本地种114种,外来种169种;②优势植物主要有椰子Cocos nucifera、印度紫檀Pterocarpus indicus、王棕Roystonea regia、垂叶榕Ficus benjamina等;③树木径级结构呈现“整体偏小”的分布格局,整体立木层次较低,平均树高仅6.8 m;④物种多样性指数与功能多样性指数之间多数存在显著相关(P<0.05);⑤谱系多样性指数(PD)与乔木层、草木层中各物种多样性指数多数存在显著相关(P<0.05);谱系变异性指数(PSV)与多数物种多样性指数、功能多样性指数均不相关,但谱系均匀度指数(PSE)与多数物种多样性指数、功能多样性指数显著相关(P<0.05)。为避免物种同质化现象,提倡运用乡土物种进行城市森林建设,同时选择多层次且具有针对性的多样性指数和功能性状参数,以保证对城市森林植物多样性评估的全面性和准确性。In order to have a more comprehensive understanding of the structural change and succession process of plant community in Haikou City,and predict the composition of its future change trend.A total of 235 randomly selected urban forest plots were studied in a built-up area of Haikou City.Structural characteristics and their corresponding plant diversity indexes were determined with a correlation analysis.Results indicated that(1)The presence of 283 species of common plants in the built-up area belonging to 218 genera of 72 families with 114 native species and 169 exotic species.(2)The dominant plants included Cocos nucifera,Pterocarpus indicus,Roystonea regia,and Ficus benjamina.(3)The diameter presented a distribution pattern of“overall small”,and the overall tree height was low with an average height of 6.8 m.(4)There was a significant correlation between species diversity and functional diversity indexes(P<0.05).(5)Also,the phylogenetic diversity index(PD)was significantly correlated(P<0.05)with species diversity indexes in the tree layer and herb layer.The phylogenetic species variability index(PSV)was not correlated with most species diversity indexes and functional diversity indexes,but the phylogenetic species variability evenness(PSE)index was significantly correlated with most of them(P<0.05).Haikou City having a large improvement potential in forest development,should avoid the homogeneity phenomenon where native species have been adopted in urban forest development;to ensure comprehensiveness and accuracy,Haikou should consider multi-level and targeted diversity indexes and functional trait parameters when evaluating urban plant diversity.

关 键 词：森林生态学 群落类型 基调物种 物种多样性 功能多样性 谱系多样性 

分 类 号：S718.5[农业科学—林学]