浙江古田山种子植物区系的地理成分研究

古田山自然保护区位于浙江西部开化县境内 ,北纬 2 9°2 0′ ,东经 118°14′ ,主峰青尖高12 4 6 .0m。占地面积 830 8.6公顷。古田山地处中亚热带 ,气侯温暖湿润。该地区植物种类丰富 ,计有野生种子植物 136科 ,5 6 4属 ,1186种 (包括种以下分类单位 ) ;区系起源古老 ,地理成分复杂 ,分为 14个类型 ;热带和温带分布的属分别占 4 6 .4 7%和 5 1.5 7%,具较明显的南北过渡现象和较多的热带区系成分。区系成分中包含了中国特有成分 10属 ,国家重点保护野生植物 17种 ;发现浙江地理分布新记录 8种。

Study on Geographical Compositions of Seed Plant Flora in Gutianshan Mou ntain of Zhejiang Province

Gutianshan Natural Reserve is situated in 29 21'N.and 118 14'E. at the west of Kaihua County in Zhejiang Province. The total area is about 8303.6 hectares and "Qingjian", its highest peak, is 1246m high above sea level . Gutianshan mountain district lies in the central subtropics. Its climate is warm and moist. The flora of Gutianshan area abounds with plant species and its seed plant list of primary study includes 136 families, 564genera and 1186 species. In general its origin is rather ancient and its geographical compositions are complicated too. According to statistics and analysis of genera in the present flora , 564 genera can be divided into 14 distribution-types. The ratio of tropical and temperate genera is respectively 46.47% and 51.57%. So its flora is characterized by transitional floristic elements and dominated by tropical ones. Ten Chinese endemic genera and 17 species which belong to Chinese key wild protected plant are found. Eight new-record species of Zhejiang geographical distribution are discovered.