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安徽省板桥山地种子植物区系初步分析

A PRELIMINARY STUDY ON THE SEED PLANTS FLORA OF BANQIAO MOUNTAINOUS REGION IN ANHUI PROVINCE

  • 摘要: 据初步统计,安徽省板桥山地有种子植物131科,513属,981种。与邻近6个山地被子植物区系的综合系数相比,本区位居第四。该区种子植物地理成分复杂,起源古老,各类热带成分、温带成分、中国特有成分分别占该区种子植物属总数的34.3%、65.7%、4.3%,显示了本区植物区系的亚热带特性。本区植物区系与黄山、西天目山关系密切;与天堂寨、庐山关系次之;与神农架、皇藏峪关系最次。

     

    Abstract: There are 981 species of seed plants,belonging to 131 families and 513 generain Banqiao Mountainous Region(BMR). Compared with six adjacent mountains,the integrative coefficient of angiosperm flora in BMRis 0. 059,which is bigger than those ofMt. Qingliangfeng, zhawan and Liugujian. Hence, the flora is relatively rich. Accordingto the geographic distribution of 513 genera of seed plants in BMR,they can be groupedinto 14 distribution types,among which the temperate elemellt makes up 34. 3% whilethe tropical element makes up 65. 7%, taking a predominant position. The resultsshows:this flora has subtropical characteristics and the floristic geographical elementsare complex. By analysis of the floristic relationship between BMR and adjacent mountains, the species similarity coefficients between this flora and Mt. Huangshan, Tianmushan, Tiantangzhai, Lushan, Shennongjia, Huangzangyu are in sequence order of 79.1 %,73. 1 %,59. 3 %,48. 3 %,41. 7%,28. 7 %,respectively.

     

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