Plant Diversity ›› 2015, Vol. 37 ›› Issue (06): 713-720.doi: 10.7677/ynzwyj201515050

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Species Diversity and Floristic Characteristics of Vascular Plants in Nanji Island, Zhejiang Provience

 ZHU  Hong-1, KU  Wei-Peng-1, RENG  Jian-Tao-2, XIANG  Jia-E-3   

  1. 1 School of Forestry and Biotechnology, Zhejiang A & F University, Lin’an, Zhejiang 311300, China; 2 Whenzhou Academy of
    Agricultural Sciences, Wenzhou, Zhejiang 325006, China; 3 School of Environmental and Resource Science,
    Zhejiang A & F University, Lin’an, Zhejiang 311300, China
  • Received:2015-03-25 Online:2015-11-25 Published:2015-04-17
  • Supported by:

    南麂海洋站建设项目对浙江南麂列岛国家级海洋自然保护区生态影响 (2014720),温州市低碳发展战略研究项目 (温发改环资 [2013] 256号)

Abstract:

A total of 393 species (subtype included) in 267 genera, 97 families were reported in Nanji Island, the main island of Nanji Islands National Nature Reserve. After eliminating all the cultivated and invasive species, there were still 304 species in 210 genera and 81 families belonging to wild vascular plants; To better understand the floristic characteristics of Nanji, we applied analysis in 3 levels: At familylevel, the largest families in pteridophyte were ranked as Pteridaceae、Thelypteridaceae、Lygodiaceae、Dryopteridaceae; In seed plants, almost the largest ones were Cosmopolitan, while the small ones dominented the most, quantitatively and proportionately; The characteristic families of seed flora were consisted of Liliaceae、Amaryllidaceae、Urticaceae、Verbenaceae, cause they got high ratio of VFICS/WFIW; At genuslevel, the Pantropical Distribution (3810%)、the North Temperate Distribution (1630%) and the East Asia distribution (1131%) formed the main part of seed flora; The proportion of the category of temperate distribution and tropical distribution was 6072% and 3928% respectively; Took 6 other sites as reference, through cluster analysis and R/T ratio comparisons, It was proved that Nanji Island were most similar to that of Wuyanling of Zhejiang Provience but showed more tropical affinities; At specieslevel, wild seed plants can also be divided into 9 areal subtypes, The Yangtze River & Southern Proviences subtype dominented at 5390%, following by South China subtype at 2078%. The results showed that Nanji Island had a distinctive transitional characteristics of flora from north to south China with more tropical biological properties, thus the floristic division of Nanji should on the southern margin area of east China.

Key words: Nanji Island, Plant flora, Characteristic families, Cluster analysis, Dividing line

CLC Number: 

  • Q 948.2