粤北不同杉阔混交林林下植物的物种多样性分析  

Diversity analysis of understory plants in different mixed forests of Cunninghamia lanceolata and broad-leaved trees in Northern Guangdong Province,China

作　　者：罗熠 邓厚银 胡德活[2] 王润辉[2] 黄荣 晏姝[2] 韦如萍[2] 郑会全[2] LUO Yi;DENG Houyin;HU Dehuo;WANG Runhui;HUANG Rong;YAN Shu;WEI Ruping;ZHENG Huiquan(College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou Guangdong 510642,China;Guangdong Academy of Forestry,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangzhou Guangdong 510520,China)

机构地区：[1]华南农业大学林学与风景园林学院,广东广州510642 [2]广东省林业科学研究院/广东省森林培育与保护利用重点实验室,广东广州510520

出　　处：《南方林业科学》2024年第5期45-51,共7页South China Forestry Science

基　　金：广东省林业科技创新项目(2023KJCX026)。

摘　　要：为了探究不同类型杉阔混交林林下植物物种多样性的差异,以广东省北部地区6种人工杉阔混交林(“杉木×木荷”“杉木×红锥”“杉木×乐昌含笑”“杉木×火力楠”“杉木×香樟”“杉木×枫香”)以及杉木纯林为对象,对其林下灌木和草本植物的组成、植物区系成分及物种多样性进行调查分析,发现研究区域内共有植物50种,分属33科44属。其中,林下灌木层植物共有25种,分属16科20属;草本层植物共有25种,分属17科24属。区系分析结果显示,可将研究区域林下植物33科划分为9个分布区类型,41属划分为9个分布区类型。进一步研究还发现,6类杉阔混交林“杉木×香樟”林分的林下植物综合物种多样性指数(SDCI)最高,为0.72“,杉木×枫香”林分(0.67)和“杉木×乐昌含笑”林分(0.67)次之,然后是“杉木×火力楠”林分(0.63)“、杉木×木荷”林分(0.54)和“杉木×红锥”林分(0.48),杉木纯林(0.46)最低。Six types of mixed forests of Cunninghamia lanceolata and broad-leaved trees("C.lanceolata×Schima superba""C.lanceolata×Castanopsis hystrix""C.lanceolata×Michelia chapensis""C.lanceolata×M.macclurei""C.lanceolata×Camphora officinarum""C.lanceolata×Liquidambar formosana")and pure C.lanceolata forest in Northern Guangdong were investigated with the aim to dissect their understory shrubs and herbs composition regarding the species and floristic pattern and the diversity levels.The results indicated that there were 50 species of plants in the research area,organized into 44 genera and 33 families.Among them,there were 25 species of shrubs,belonging to 20 genera and 16 families;25 species of herbs,belonging to 24 genera and 17 families.Floristic analysis indicated that,41 genera and 33 families of understory plants in the research area could be split into 9 distribution types and 9 distribution types,respectively.The species diversity composite index(SDCI)of"C.lanceolata×C.officinarum"was the highest in the six types of mixed forests of C.lanceolata and broadleaved trees,and was 0.72,followed by"C.lanceolata×L.formosana"stand(0.67)and"C.lanceolata×M.chapensis"stand(0.67).The next stands were"C.lanceolata×M.macclurei"(0.63),"C.lanceolata×S.superba"(0.54)and"C.lanceolata×C.hystrix"(0.48),and the pure C.lanceolata forest(0.46)was the lowest.

关 键 词：粤北 杉阔混交林 物种多样性 灌木层 草本层 

分 类 号：S791.27[农业科学—林木遗传育种] S718.3[农业科学—林学]