中国大陆北热带及亚热带地区樟科、壳斗科物种多样性及其生物地理格局分析  

Species diversity and biogeographical patterns of Lauraceae and Fagaceae in northern tropical and subtropical regions of China

作　　者：郑维艳 曾文豪 唐一思 石慰 曹坤芳[1,2] ZHENG Weiyan;ZENG Wenhao;TANG Yisi;SHI Wei;CAO Kunfang(Guangxi Key Laboratory of Forest Ecology and Conservation,College of Forestry,Guangxi University,Nanning 530004,China;State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学林学院,广西森林生态与保育重点实验室,南宁530004 [2]广西大学,亚热带农业生物资源保护与利用国家重点实验室,南宁530004

出　　处：《生态学报》2018年第24期8676-8687,共12页Acta Ecologica Sinica

基　　金：国家重点研发计划子课题(2016YFC0502101-04);广西重点研发计划项目(桂科AB16380254);广西“八桂学者”人才项目(2016A32).

摘　　要：以中国大陆北热带及亚热带地区优势科樟科、壳斗科植物为研究对象,利用专著发表大量的样方数据和物种分布数据,分析樟科、壳斗科与群落构建的关系、它们各大属的地理分布格局,探讨影响其分布的可能历史原因。结果表明:中国大陆北热带及亚热带地区森林乔木层优势科为樟科、壳斗科、山茶科、杜鹃花科。樟科、壳斗科物种丰富度均与其所在群落的物种丰富度呈现一定的正相关,樟科对群落构建的贡献较大。樟科、壳斗科植物种的空间多样性分布中心均出现在我国亚热带中部偏南地区。樟科的厚壳桂属、琼楠属以及壳斗科的锥属物种多样性分布中心主要在南亚热带及北热带区域,以广西、云南省份的南部为主。樟科的樟属、新木姜子属、润楠属、木姜子属及壳斗科的柯属、青冈属主要分布在我国大陆北热带及亚热带中部偏南的地区,其多样性分布中心与樟科、壳斗科科水平的物种多样性分布中心极为相似。樟科的山胡椒属、楠属、黄肉楠属,壳斗科的栎属主要分布在研究区域中部以西的地区。研究结果佐证物种的生态学特性以及生物地理学历史综合作用导致目前樟科和壳斗科植物的生物多样性分布格局。This study characterized the species diversity and biogeographical distribution patterns of the major genera of two dominant families,Lauraceae and Fagaceae,in northern tropical and subtropical forests of China's Mainland. The study also examined the relationship between the species diversity of these two families and those of forest communities and explored possible historical factors that affect the distributions of their species diversity. The results show that the dominant families in these forests are Lauraceae,Fagaceae,Theaceae,and Ericaceae. The species richness of both Lauraceae and Fagaceae are positively correlated with that of the forest communities where they occur,and compared to Fagaceae,Lauraceae contributes more significantly to the species diversity of the forest communities. The highest species richness of both Lauraceae and Fagaceae are found in the south-central parts in northern tropical and subtropical regions of China. The diversity centers of Cryptocarya and Beilschmiedia of Lauraceae and Castanopsis of Fagaceae are found in the northern tropical and southernsubtropical regions,mainly in the southern Guangxi and southern Yunnan provinces. The diversity centers of the genera Cinnamomum,Neolitsea,Machilus,and Litsea of Lauraceae and Lithocarpus and Cyclobalanopsis of Fagaceae are found in the south-central part of the subtropical region,which corresponds to their family-level diversity distributions. However,the highest diversity of Lindera,Phoebe,and Actinodaphne of Lauraceae and Quercus of Fagaceae are found in the central and western parts of the study region. Our results indicate that ecological adaptation and biogeographical history jointly determine the current biodiversity distribution patterns of Lauraceae and Fagaceae.

关 键 词：中国大陆北热带 中国大陆亚热带 樟科 壳斗科 物种多样性 群落构建 生物地理格局 

分 类 号：S718.5[农业科学—林学]