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邓伟琼, 孙荣, 李修明, 路丁, 杨泉, 卢珂宇. 九龙江源头山地河流河岸带植物区系研究[J]. 植物科学学报, 2013, 31(5): 467-476. DOI: 10.3724/SP.J.1142.2013.50467
引用本文: 邓伟琼, 孙荣, 李修明, 路丁, 杨泉, 卢珂宇. 九龙江源头山地河流河岸带植物区系研究[J]. 植物科学学报, 2013, 31(5): 467-476. DOI: 10.3724/SP.J.1142.2013.50467
DENG Wei-Qiong, SUN Rong, LI Xiu-Ming, LU Ding, YANG Quan, LU Ke-Yu. Flora Study of Riparian Plants on the Mountain River Banks of the Jiulongjiang River Headstream[J]. Plant Science Journal, 2013, 31(5): 467-476. DOI: 10.3724/SP.J.1142.2013.50467
Citation: DENG Wei-Qiong, SUN Rong, LI Xiu-Ming, LU Ding, YANG Quan, LU Ke-Yu. Flora Study of Riparian Plants on the Mountain River Banks of the Jiulongjiang River Headstream[J]. Plant Science Journal, 2013, 31(5): 467-476. DOI: 10.3724/SP.J.1142.2013.50467

九龙江源头山地河流河岸带植物区系研究

Flora Study of Riparian Plants on the Mountain River Banks of the Jiulongjiang River Headstream

  • 摘要: 在野外调查、标本采集和综合分析国内有关山地河流河岸带植被研究的基础上,探讨山地河流河岸带植物区系特征。调查表明:九龙江源头山地河流共有维管植物145科390属574种,其中蕨类植物29科54属80种,裸子植物6科8属10种,被子植物110科328属484种。综合分析表明,山地河流(以九龙江源头河段为例)河岸带植被具有如下典型特征:(1)植物区系组成丰富,优势科、属明显,单型属、单种属和少种属,单种科、少种科比例大;(2)植物区系起源古老,珍稀、孑遗植物众多;(3)区系地理成分复杂,联系广泛,能充分反映区域气候、地形地貌和人为活动等自然和人为干扰条件。表明山地河流河岸带在区域生物多样性保护中具有极其重要的价值。

     

    Abstract: Based on field investigation, sample collection, and comprehensive analysis of the riparian vegetation in mountain rivers, the riparian flora characteristics were investigated. The results showed that 574 vascular plants belonging to 390 genera and 145 families in the mountain rivers of the Jiulongjiang River headstream were identified, among which pteridophyte had 29 families, 54 genera and 80 species; gymnosperm had 6 families, 8 genera and 10 species; and, angiosperm had 110 families, 328 genera and 484 species. Through comprehensive analysis several typical characteristics of the mountain river riparian vegetation (taking reaches of the Jiulongjiang River headstream as an example) were found as follows: (1) a rich floral composition, with the dominant families and genera highly prominent; monotypic, oligotypic and oligotaxic genera, and oligotypic and oligotaxic families formed a large proportion; (2) flora of ancient origin; rare and relict plants were abundant; and, (3) complicated geographical elements and flora connected extensively with most parts of the world fully reflected natural and human disturbance such as regional climate, topography and human activities. Results indicated that the riparian zone had an extremely important function in conserving regional biodiversity.

     

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