河南薄山种子植物区系特征及其与邻近地区的关系

Spermatophyte flora of Boshan Mountain in Henan Province

对河南省薄山植物区系的物种丰富度、优势科组成、科属种的特征、科属种的分布区类型及其与邻近地区植物区系的聚类分析等方面进行了分析。结果表明:河南薄山有种子植物120科410属747种38变种6变型。分析表明薄山种子植物区系中,世界广布成分有42科52属28个种(含种下分类单位),热带成分有49科130属89个种(含种下分类单位),温带成分有29科228属674个种(含种下分类单位)。其中科的地理成分以热带科和世界广布科为多,热带科为温带科的1.7倍;属的地理成分以温带成分为主,温带属的成分是热带属的1.8倍,温带种的成分占绝对优势,温带种为热带种的7.6倍。说明本区的植物区系性质是以温带成分为主。

Boshan Mountain,located in central Henan Province,is rich in flora with 120 families,410 genera,747 species,38 varieties,and 6 forms of seed plants.This study compared the composition,richness,dominant families,characteristics,and areal types for flora of families,genera,and species on Boshan Mountain and adjacent flora using a cluster analysis of their floristic spectra.Results showed that the geographic distribution for all families,genera,and species of seed plants could be divided into 15 distributional types.There were seed plants for mixed tropical and temperate flora：42 families,52 genera,and 28 species;tropical flora：49 families,130 genera,and 89 species;and temperate flora：29 families,228 genera,and 674 species with temperate genera 1.8 times tropical genera,and temperate species 7.6 times tropical species.[ Ch,1 fig.6 tab.17 ref.]