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Plant Diversity ›› 2000, Vol. 22 ›› Issue (02): 1-3.

• 研究论文 •    

中国植物区系的性质和各成分间的关系

王荷生                

  1. 中国科学院地理研究所
  • 出版日期:2000-04-25 发布日期:2000-04-25

The Nature of Chinas Flora and the Relationships between Its Different Element

WANG He-Sheng   

  1. Institute of Geography ,The Chinese Academy of Sciences,Beijing 100101
  • Online:2000-04-25 Published:2000-04-25

摘要: 根据植物区系平衡理论,以“中国种子植物区系研究”项目的结果材料分析中国植物区系的性质和各成分间的关系。从全国整体来看,中国植物区系是亚热带性质,热带成分和温带成分分别占50.2%和49.8%,即基本平衡。而各地区间有显著差异,文中做了具体比较分析及揭示其变化规律,大致是热带成分在热带地区占75%~85%,亚热带地区占40%~60%,温带地区占15%~25%,寒温,高寒和中亚荒漠地区占5%~10%,自南向北向西方向递减,温带成分与之相反,而且北方温带成分变化曲线与热带成分呈反射状,表明二者是以相反方向同等发展的。文中又据中国种子属15个分布型或地理成分所归科的相似性系数矩阵来研究各成分间的关系,结果是相似性系数为12~58强,分为10级(10~60),排列出各成分间相似性程度及其变化梯度,其中以东亚和中国特有成分间关系最密切,温带亚洲和热带亚洲间关系最疏远,同时显出3个关系很密及最密区域,即旧大陆热带,古地中海和东亚,这三区域里可能是中国植物区系的发源地。

关键词: 植物区系, 分布型或地理成分, 相似性系数, 中国

Abstract: According to the flora balance theory and the research results from the project of "Chinses Seed Plants Flora",China's floristic nature has analysed in the paper. It is subtropical nature as tropical elements being 50.2% and the temperate ones 49.8%,i.e. they are basically balance. However,there are obvious regional differentiation. The tropical elements reach 75%-85% in tropical regions,40%-60% in subtropical,15%-25% in temperate ,and only 5%-25% in cold-temperate,high-cold and Central Asian desert.They become lower and lower gradully from south to north but the temperate elements are on the contrary.The relationships among different geographical elements are dtudied based on the cofficient of similarity between every two elements of families belonging to the 15 distribution patterns of Chinese seed plants genera.

Key words: Flora, Distribution patterns or geographical elements, Coffiecient of similarity, China