摘要
为探究海南热带雨林国家公园生物防火林带群落结构和生物多样性特征,以公园内霸王岭生物防火林带为调查对象,分析生物防火林带群落径级和高度级分布特征,以树种重要值、物种丰富度指数(D)、Simpson优势度指数(H)、Shannon-Wiener多样性指数(H′)、Pielou均匀度指数(J_(sw))综合评价生物防火林带群落优势树种和物种多样性。结果显示:(1)生物防火林带植物种类有27科34属35种;(2)群落结构在径级和高度级方向分布均为连续;(3)造林树种大叶相思重要值偏低,群落优势度不突出;(4)乔木层和灌木层物种多样性较高,物种分布较均匀,乔木类树种物种多样性明显高于灌木类、藤本、草本植物。霸王岭生物防火林带生物多样性较高,物种分布较均匀,群落层次结构明显,群落更新状态良好,但防火树种优势度不突出。
The distribution characteristics of diameter class and height class of biological fire prevention forest community were analyzed with Bawangling biological fire prevention forest belt as the investigation object,in order to explore the community structure and biodiversity characteristics of biological fire prevention forest belt in Hainan Tropical Rainforest National Park.The dominant tree species and species diversity of biological fire prevention forest belt community were comprehensively evaluated by tree species importance value,species richness index(D),Simpson dominance index(H),Shannon-Wiener diversity index(H′),and Pielou evenness index(J_(sw)),respectively.The results showed:(1)A total of 35 plant species belonging to 34 genera and 27 families were investigated.(2)The community structure was continuous in the diameter and height classes.(3)The important value of Acacia auriculiformis was low,and the community dominance was not prominent.(4)The species diversity of tree species was significantly higher than that of shrubs,vines and herbs.The species diversity of tree layer and shrub layer was better and the species distribution was more uniform.The biodiversity of the biological fire-resistant forest belt in Bawangling was high,the species distribution was uniform,the community hierarchy was obvious,and the community renewal state was good,but the dominance of fire-resistant tree species was not prominent.
作者
黎肇家
方发之
桂慧颖
吴二焕
徐建辉
LI Zhaojia;FANG Fazhi;GUI Huiying;WU Erhuan;XU Jianhui(Hainan Academy of Forestry,Haikou 571100,Hainan,China)
出处
《湖南林业科技》
2023年第4期56-63,89,共9页
Hunan Forestry Science & Technology
基金
海南省属科研院所技术创新专项(SQKY2022-0023)。
关键词
生物防火林带
群落结构
重要值
物种多样性
霸王岭
biological fire prevention forest belts
community structure
importance value
species diversity
Bawangling
