广东深圳樟科植物区系地理研究

在野外调查、文献和标本查阅的基础上,确认深圳市共有野生樟科Lauraceae植物8属41种3变种.其中,短序琼楠Beilschmiedia brevipaniculata、黄心树Machilus gamblei和粗壮润楠M.robusta为深圳分布新记录种.深圳樟科植物以润楠属植物最为丰富,其次为樟属和木姜子属.从属的地理成分来看,深圳樟科以泛热带、热带亚洲和热带美洲间断分布属为主.从种的地理成分来看,深圳樟科植物以热带亚洲分布和中国特有类群为优势,其各占总种数的45.45%.与邻近地区的香港、广州、东莞、鼎湖山、南岭和尖峰岭等地区樟科植物属种相比,深圳市与香港的属种相似性最高,与尖峰岭的属种相似性最低.

Floristic Geography of Lauraceae of Shenzhen, Guangdong

According to field collections and specimen identification,there are 8 genera,41 species and 3 varieties of Lauraceae in Shenzhen,3 of which are newly recorded,i.e.,Beilschmiedia brevipaniculata,Machilus gamblei and M.robusta.Machilus has the most abundant species in Shenzhen,followed by Cinnamomum and Litsea.The dominant generic geographical elements of Lauraceae are the pan-tropical,tropical Asia and tropical America disjuncted elements.The species are dominated by the tropical Asian element and the endemic element to China,accounting for 45.45% of the total species respectively.The comparison of the geographical patterns of Lauraceae between Shenzhen and the surrounding areas showed that Shenzhen has the highest generic similarity coefficient with Hong Kong and the lowest with Jianfengling(Hainan).