浙江北部沿海岛屿与毗邻地区植物区系的亲缘关系研究＊

浙江北部沿海岛屿(下简称岛屿群)是浙江沿海岛屿区的主体, 在浙江沿海岛屿植物区系中最具代表性.作者统计该岛屿群与毗邻地区植物区系的共有种和区系共有地理成分, 分析该岛屿群与我国东部沿海诸山地森林植物区系间属的主分量和种的相关性, 阐明下述观点:1.浙江北部沿海岛屿与我国南部各地区植物区系的联系远比其北部各地区密切.2.浙江北部沿海岛屿与华东植物区系的关系最为密切;与华南植物区系的相似程度超过华中.3.浙江北部沿海岛屿与我国台湾和日本植物区系的关系都很密切, 尤以与日本植物区系的关系更为密切.4.浙江北部沿海岛屿与我国东部沿海诸山地森林植物区系属种相似性递减序列依次为杭州、西天目山、黄山、九龙山、大别山、连云港、青岛和旅大.

A Study on the Floristic Relationships Between the Coastal Islands of North Zhejiang and Adjacent Regions

The coastal islands of North Zhejiang are the main parts and the floristic representative of coastal islands in Zhejiang. By means of contrative analysis of the shared species and the floristic elements between the islands and adjacent regions, and the pricipal component analysis of genera as well as Similarity Indices Analysis of species, the results are showed as follows:1.The floristic relationship of the coastal islands of North Zhejiang with its southern regions is much closer than that with its northern regions. 2.The coastal islands of North Zhejiang is the closest to East China in flora. The floristic relationship of islands with South China is closer than that with Centre China. 3.The flora of the coastal islands of North Zhejiang is very closely related to Taiwan and Japan. The floristic relationship of islands with Japan is closer than that with Taiwan. 4.The similarity series of genera and species, about islands and coastal areas in East China are Hangzhou, Mountain Tiamu, Mountain Huangshan, Mountain Jiulong, Mountain Dabie, Lianyungang, Qindao and Luda.