长江流域资源与环境 >> 2010, Vol. 19 >> Issue (11): 1256-.

• 区域可持续发展 • 上一篇    下一篇

赣江河岸带种子植物区系特征

刘以珍,葛刚,徐燕花,雷平   

  1. (南昌大学生命科学与食品工程学院|江西 南昌 330031)
  • 出版日期:2010-11-20

FLORISTIC CHARACTERISTICS OF SEED PLANT IN RIPARIAN OF GAN RIVER

LIU Yizhen| GE Gang| XU Yanhua| LEI Ping   

  1. (College of Life Science and Food Engineering, Nanchang University, Nanchang 330031, China)
  • Online:2010-11-20

摘要:

通过对赣江河岸带种子植物的调查和区系地理成分的分析,结果显示,赣江河岸带种子植物物种组成丰富,区系组成复杂,共有种子植物119科405属708种,其中裸子植物2科2属2种,被子植物117科403属706种。被子植物中,双子叶植物99科312属548种,单子叶植物18科91属158种。其生活型组成以草本植物为主,占河岸带种子植物总种数的62.01%,而木本植物中落叶成分占到71.67%,体现了河岸带特殊的生境特点。赣江河岸带种子植物区系组成中,世界广布科、属具有优势,分别占总科、属的39.50%、15.31%,使河岸带植被具有隐域性的特点,属的分布区类型复杂,Temp值为1.02,体现了其植物区系地带性过渡特征。运用聚类分析、公式拟合和主成分分析几种方法研究赣江河岸带与几个区系的关系,结果表明,赣江河岸带处于典型湿地与典型山地之间,区系组成具有水陆交汇性特点。〖

Abstract:

708 species of seed plants affiliated to 405 genera in 119 families were discovered in riparian of Gan River based on field survey and analysis of geographical elements.There were 2 gymnosperm species belonging to 2 genera in 2 families and 406 angiosperm species belonging to 403 genera in 117 families.Among angiosperm,there were 548 dicotyledonous species belonging to 312 genera in 99 families,and 158 monocotyledonous species belong to 91 genera in 18 families.According to lifeform classification of plants group,herbs (6201%) were the dominants and deciduous component (7167%) in woody plant,which reflected the characteristics of ecological environment in Gan River riparian.Further flora analysis indicated that there were intrazonal feature of vegetation in this distinct being of prevailing widespread families (39.50%) and genera (15.31%),and complex distribution types of plant genera.Trop/TTemp value was 1.02,which embodied a transitional flora trait.Cluster analysis,principal component analysis and formula fitting implied the intersection of land and water.〖

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