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湖南武陵源种子植物区系初步研究

Study on the Flora of Wulingyuan Nature Reserve Seed Plant,Hunan Province

  • 摘要: 武陵源共有种子植物171科、742属、1468种(含栽培种,下同)。其中裸子植物8科、24属、39种;被子植物163科、718属、1429种。在科属种不同的水平上对武陵源种子植物区系特征进行了较深入的统计分析,结果表明:武陵源种子植物区系属的成分中,北温带分布类型占明显优势,共有389属,热带分布类型次之,共289属,东亚和中国特有分布也是非常重要的区系成分之一,共139属。可见,武陵源植物区系不仅兼容了丰富的热带和温带成分,而且还显示出其在华中植物区系中的重要位置。另外武陵源植物区系还有许多珍稀、古老、孑遗、原始植物成分。

     

    Abstract: There are variety of seed plant in Wulingyuan.Generally,there are 171 families,742 genera and 1468 species(including long-term domesticated plants),of which the gymnosperms are 8 families. 24 genera and 39 species;while the angiosperms are 163 families,718 genera and 1429 species. In this thesis,we have conducted deep and accurate analyses and count on the characteristics of the flora of the seed plants of Wulingyuan,and the analyses and count are from different standards of the families,the genus and the species.According to the results,we find that the components of seed plants mainly belong to north temperate distribution-type,and the genera number is 389. Then the tropical distribution-type isnext to it,with 289 genera. In addition,some special distribution in East Asia and in China is also one of the very important ingredient of the flora,and the genera number is 139. From this point of view,we can draw a conclusion that the flora of this region not only contains abundant tropical and temperate components,but also represents the important role of the flore of Wulingyuan in Middle China.Furthermore,there are also lots of rare,precious,ancient,and primitive plant components.

     

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