广东新会维管植物区系的研究  

Study on vascular plants flora from Xinhui regions in Guangdong province,China

作　　者：仲铭锦[1] 叶向斌[2] 廖文波[3] 

机构地区：[1]华南师范大学生命科学学院,广州510631 [2]仲恺农业技术学院园艺系,广州510225 [3]中山大学生命科学学院,广州510275

出　　处：《西北植物学报》2003年第7期1246-1257,共12页Acta Botanica Boreali-Occidentalia Sinica

摘　　要：新会市位于广东省中南部 ,地理位置为北纬 2 2°0 5′4 3″～ 2 2°4 8′2 4″,东经 1 1 2°4 7′0 3″～ 1 1 3°1 5′2 4″,南濒南海 .该地区共有维管植物 1 6 98种 ,隶属于 2 0 9科 81 6属 ,其中蕨类植物 32科 5 4属 82种 ,种子植物 1 78科 76 2属1 6 1 6种 .区系地理学研究表明 :蕨类植物地理成分以热带亚热带分布属居多 ,达 2 6属 ,占蕨类总属数的 4 8.1 3% ,而且是以单种属或少种属占优势 .种子植物地理成分以泛热带、热带亚洲分布占绝对优势 ,全部热带成分已达78.0 9% ;其特征科主要有 :山矾科、冬青科、壳斗科、桑科、金缕梅科、山茶科、樟科、萝摩科、大戟科、蝶形花科、野牡丹科、茜草科等 ;中国特有属杉木属、穗花杉属、石笔木属、四药门花属、马蹄参属、天星藤属、大血藤属、刚毛药花属、台闽苣苔属、酸竹属及广东特有属绣球茜草属、异枝竹属等 .与邻近的香港、惠东古田、鼎湖山和黑石顶的植物区系比较其相似性很高 。Xinhui regions is situated in the center and south of Guangdong province, the geographical position 22°05′43″～22°48′24″N, 112°47′03″～113°15′24″E, south near by the south China Sea, which there were the vascular plants about 1 698 species, belonging to 209 families and 816 genera, among them the ferns 32 families, 54 genera and 82 species, the seed plants 178 families, 762 genera and 1 616 species. A detailed floristic analysis showed: (1) the ferns was abundant by tropic and sub-tropic elements, about 26 genera, occupied 48.13% of total genera, and they mainly was characterized by monotype genera, single species genera and oligo genera. (2) the seed flora was abundant by Pan tropic, Asian tropic elements, with the total percent up to 78.09%; the typical families of seed flora mainly included in Symplocaceae, Aquifoliaceae, Fagaceae, Moraceae, Hamamelidaceae, Theaceae, Lauraceae, Asclepiadaceae, Euphorbiaceae, Papilionaceae, Melastomataceae, Rubiaceae, etc.; the endemic genera to China mainly included in Cunninghamia, Amentotaxus, Tutcheria, Tetrathytium, Diplopanax, Graphistemma, Sargentodoxa, Barthea, Titanotrichum, Acidosasa , etc., and local endemic genera included in Dunnia,Metasasa , etc. (3) by comparing with those floras of the neighboring regions showed that the Xinhui's flora was closely similar to those of Hong Kong, Gutian of Huidong district, Dinghushan mountain, and Heishiding mountain, etc., which they indicates that the Xinhui' flora was a property of lower subtropic floras, with an obvious transition and tropic permeation.

关 键 词：广东省新会市 蕨类 种子植物 区系分析 

分 类 号：Q948.5[生物学—植物学]