秦皇岛市非中国特有种植物的区系分析

A FLORISTIC ANALYSIS ON SEED PLANTS OF NON-ENDEMIC TO CHINA SPECIES FROM QINHUANGDAO(E.HEBEI)

秦皇岛市计有野生种子植物 1 0 93种 ,隶属于 1 2 2科 ,5 1 3属。其中非中国特有种 847种 ,占总种数的 77.4%。中国特有种 2 46种 ,占总种数的 2 2 .6 %。本文对非中国特有成分作了区系分析 ,其中世界分布 36种 ;热带分布 5 5种 ,占 5 .2 % ;温带分布 5 1 0种 ,占 48.2 % ;东亚分布 2 42种 ,占 2 2 .9% ;中亚东部至华北分布 (古地中海成分 ) 2种 ,占 0 .2 %。因此 ,秦皇岛植物区系属于东亚和温带亚洲区系 ,与热带和古地中海区系有微弱的联系。

In Qinhuangdo district,there were 1093 species of wild seed plants,of which, there were 847 species that were non-endemic to China and 246 endemic to China species. The author analysed the non-endemic to China species and the results as follows:There were 36 species of Cosmopolitan distribution type, 55 species of Tropic distribution type(5.2% of the total non-endemic to China species),510 temperate distribution species(48.2%),242 E.Asia species(22.9%) and only 2 species of Old-Mediterranea distribution type(0.2%).Based on the folristic analysis Qinhuangdao flora belonged to E.Asia and Temp.Asia flora,and had a little relation to Tropic flora, and Old-Mediterranes flora.