香港的植物区系

通过两年多的野外考察，对收集到的３５００号标本进行分类鉴定和根据前人的研究资料，概述了香港植物区系的研究历史、自然条件与植被。对香港种子植物的区系组成、特点、属的分布区类型、特有现象作了分析并进行了区系比较，并对香港的濒危植物和最近两年多发现的新记录植物作了介绍。

STUDY ON THE FLORA OF HONG KONG

The flora of Hong Kong was surveyed by the first auther during March 1996 toJune 1998 according to the Project of investigation on the Biodiversity of Hong Kong.More than 3 500 specimens were collected, of which some 100 species were new records toHong Kong. In this paper the history of floristic researches, the vegetation, the floristiccomponents, endemism, the rare and endangered species as well as a comparison of theHong Kong flora to the neibouring regions are presented. Hong Kong is rich in plant diversity,so far a total of 2 145 vascular species in 973 genera of 224 families, including 216 speciesin 97 genera of 45 families of ferns, have been recorded, of which 16 species are listed tobe protected by China government and 166 species by government of the Hong KongSpecial Administrative Region. The most species-rich families are Gramineae, Orchidaceae,Papilionaceae, Cyperaceae, Compositae, Rubiaceae, Euphorhiaceae, Lauraceae, Fagaceae,Moraceae, Theaceae and Myrsinaceae, the latter seven being dominants in forests. Thespecies-rich tree genera with more than 10 species are Ficus, Lithocarpus, Ilex, Machilus,Symplocos, Castanopsis, Cyclobalanopsis and Camellia, all of which are also dominants and are of tropical and subtropical elements. As a part of Guangdong flora, the flora of HongKong is closely related to that of Hainan and Indo-China, and they share the same origin.