摘要
杭州西湖山区种子植物丰富,共有1225种(包括栽培420种),隶属于756属、155科;以科、属、种为单位,对科的大小,属、种的分布型,生活型等方面进行了分析,其结果表明:(1)该区系的热带、亚热带和暖温带、温带的特征显著,具有热带到温带分布的过渡性.(2)科、属均以单种和寡种的为主,表明植物区系的多样性.(3)区系的主要成分以落叶乔、灌木和草本植物的属种居多,与本区接近北亚热带气候带相符.(4)该区系以长江以南广布型和华东区系成分为主,并与华中区系关系较密切,而与华北区系成分有一定的联系.(5)特有植物贫泛,反映该区地形较为简单.
The species of seed-plants on the West Lake mountainous area in Hangzhou are very rich. There are about 1 525 species (including cultivated plants) of Spermatophyte, which belong to 756 genera and 155 families. The size of families and genera, the distribution on pattern of genera and life-forms of species have been analysed. The results are summarized as follows:
1 . The floristic characters are conspicuous for temperate and tropical-subtropical element, which represents a transitional pattern of distribution from subtropical to temperate.
2 . The floristic diversity is revealed by the main component of small and monospecific taxa.
3 . The deciduous and herbareous genera as well as species are the main members of the flora, which is correspondent to the near climatic zone of north subtropical region.
4 . The floristic elements mainly consist of wide distribution to the south of the Yangtze River and the elements of East China. Besides the floristic elements are closely related to Central and North China.
5 . The less endemic species reflect that the topograph of the mountains is relatively simple.
出处
《杭州大学学报（自然科学版）》
CSCD
1990年第4期450-456,共7页
Journal of Hangzhou University Natural Science Edition
