关键词: 种子植物, 植物区系分析, 浙江

Abstract:

The flora of wild seed plants in Hangzhou West Lake area, Zhejiang Province is analyzed in this paper. There are 1111 species of seed plants which belong to 572 genera of 143 families in this area. At family level, the proportion of the pantropic type is larger than others and reaches 48.9%, while the tropic types are more than the temperate ones (64∶28). At genus level, the temperate types is more than the tropic ones (268∶220). At species level, the temperate types is far more than the tropic ones (502∶234). It is obviously that the flora in this area is characterized by the northern area of subtropics feature. On the other hand, 546 genera, which include only 1 species or 2-5 species, occupy 879 species. At species level, the East Asia type (33.7%) is almost equivalent to the endemic to China type (32.2%). Most of the East Asia species are belonged to SinoJapan type. Based on the subarea of China, the endemic species to China can be divided into 9 subtypes, and the subtype of East ChinaCentral ChinaSouth China holds the biggest proportion (46.0%). We conclude that the seed plants in the West Lake area are colorful, geographical components are multiform and the characteristic is on the eastern area of East China.

Key words: Seed plants, Floristic analysis, Zhejiang