Xie Guowen. ON PHYTOGEOGRAPHICAL AFFINITIES OF THE FOREST FLORAS BETWEEN EAST CHINA AND JAPAN[J]. Chinese Geographical Science, 1997, 7(3): 236-242.
Citation: Xie Guowen. ON PHYTOGEOGRAPHICAL AFFINITIES OF THE FOREST FLORAS BETWEEN EAST CHINA AND JAPAN[J]. Chinese Geographical Science, 1997, 7(3): 236-242.

ON PHYTOGEOGRAPHICAL AFFINITIES OF THE FOREST FLORAS BETWEEN EAST CHINA AND JAPAN

  • Received Date: 1996-07-15
  • Publish Date: 1997-09-20
  • The flora of the eastern China is the main part of Sino-Japaners floristic region. It shows from the analysis and comparison that the floristic relation of East China with Japan is closer than that with northeast China and Korea. The similarity indices of genera and species of seed plants in the two regions are very high, being 72.6% and 43.3% respectively. The structure and species composition of broad-leaval evergreen forests in the two regions are also similar, and there exist many corresponding communities, such as the forests of Castanopsis carlesii and C. sieboldii. Many plants in East China are conspecific with there in Japan, such as Cercidiphyllum japonicum, Magnolia sieboldii, Nandina domestica etc. Though the genera of Ginkgo, Liriodendron, Sassafras etc. existing now in China are extinct from Japan, their fossils have been discovered from the Tertiary strata in Japan. It seems to indicate that the phytogeographical affinities between East China and Japan are closer in ancient the than it is now, and both of the forest floras originated from the same flora. The flora in Japan did not evolve independently until it separated from Chinese continent and drifted northeastwards in the late period of the Tertiary.
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ON PHYTOGEOGRAPHICAL AFFINITIES OF THE FOREST FLORAS BETWEEN EAST CHINA AND JAPAN

Abstract: The flora of the eastern China is the main part of Sino-Japaners floristic region. It shows from the analysis and comparison that the floristic relation of East China with Japan is closer than that with northeast China and Korea. The similarity indices of genera and species of seed plants in the two regions are very high, being 72.6% and 43.3% respectively. The structure and species composition of broad-leaval evergreen forests in the two regions are also similar, and there exist many corresponding communities, such as the forests of Castanopsis carlesii and C. sieboldii. Many plants in East China are conspecific with there in Japan, such as Cercidiphyllum japonicum, Magnolia sieboldii, Nandina domestica etc. Though the genera of Ginkgo, Liriodendron, Sassafras etc. existing now in China are extinct from Japan, their fossils have been discovered from the Tertiary strata in Japan. It seems to indicate that the phytogeographical affinities between East China and Japan are closer in ancient the than it is now, and both of the forest floras originated from the same flora. The flora in Japan did not evolve independently until it separated from Chinese continent and drifted northeastwards in the late period of the Tertiary.

Xie Guowen. ON PHYTOGEOGRAPHICAL AFFINITIES OF THE FOREST FLORAS BETWEEN EAST CHINA AND JAPAN[J]. Chinese Geographical Science, 1997, 7(3): 236-242.
Citation: Xie Guowen. ON PHYTOGEOGRAPHICAL AFFINITIES OF THE FOREST FLORAS BETWEEN EAST CHINA AND JAPAN[J]. Chinese Geographical Science, 1997, 7(3): 236-242.

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