摘要
为了解狭叶坡垒(Hopea chinensis)所在群落物种多样性,完善物种数据,提高对珍稀濒危物种的保护力度,通过野外样方设置,调查分析了该群落物种组成,计算其重要值与物种多样性指数.结果表明:(1)4 个样地的群落物种丰富,群落内共有 87 个树种,隶属于 38 个科 63 属,以壳斗科、樟科、茜草科、山茶科、紫金牛科、藤黄科为主;(2)乔木树种主要以假鹊肾树、狭叶坡垒、石栎、大叶栎、黄杞和广西血桐为主,灌木主要以罗伞树、杜鹃、草鞋木和柏拉木为主;(3)乔木层物种多样性指数高于灌木层,1、2 号样地物种多样性指数高于 3、4 号样地.综上所述,狭叶坡垒所在群落物种组成丰富,物种多样性指数高,人为因素对群落多样性造成一定影响.本研究为野生狭叶坡垒种群的保护及其恢复和该区域生物多样性维持提供科学依据.
Abstract
To understand the species diversity of the Hopea chinensis community,improve species data,and improve the protection of rare and endangered species,the community species composition was investigated and analyzed through a field quadrat setting,and its importance value and species diversity index were calculated.The results showed that:(1)the commu-nities of the four plots were rich in species,with 87 tree species belonging to 38 families and 63 genera.It is mainly composed of Fagaceae,Lauraceae,Rubiaceae,Camelliaceae,Rhodiaceae,and Garcinaceae;(2)the main tree species were Streblus in-dicus,H.chinensis,Lithocarpus glaber,Quercus griffithii,Engelhardtia roxburghiana,and Macaranga rosuliflora.The prime shrubs are Ardisia quinquegona,Rhododendron simsii,Macaranga henryi,and Blastus cochinchinensis;(3)the diversity index of the tree layer was greater than that of the shrub layer,and the diversity indices of plots 1 and 2 were greater than those of plots 3 and 4.In conclusion,the H.chinensis community has a rich species composition and a high diversity index,and human activity factors affect community diversity somehow.This study provides a scientific basis for wild H.chinensis population conservation,restoration,and biodiversity maintenance in this region.
基金项目
广西科技厅重大专项(桂科AB16380254)
广西壮族自治区林草种质资源普查与收集项目(桂林科字[2021]第34号)
维普
万方数据