The flora of eastem China is the main part of Sino-Japanese floristic region. It shows by the analysis and com-parison that the floristic relations of Eastem China with Japan are closer than that ofnortheast China wit...The flora of eastem China is the main part of Sino-Japanese floristic region. It shows by the analysis and com-parison that the floristic relations of Eastem China with Japan are closer than that ofnortheast China with Korea. The simi-larity indices of genera and species of seed plants in the two regions are very high, being 72.6% and 43.3% respectively.The strure and species compositi6n of broad-leaved evergreen forests in the two regions are also similar, in which there'exist the corresponding communities, such as the forests of Castanopsis carlesii,C.Sieboldii.. Many plants in Easter Chinaare nonspecilic with those in Japan, e. g, Cercidiphyllum japonicum, Magolia sieboldii, Nandina domestica etc.. Though thegnera Ginkgo, Liriodendron, Sassafixis etc. existing now in China are extinct from Japan, their fossils have been discov-ered from the Tertiary Strata in Japan. It seems to indicate that the Phytogeographical affinities between Japan and E. Chinawas closer in ancient time than it is now; and both of the forest floras originated from one same flora. The flora in Japan did not evolve indepently until it separated from Chinese continent and drifted to northeast in the late period of the Tertiary.展开更多
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 Chin...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.展开更多
Based on the thorough investigation of the components of urban forest in Nanjing and the collection of samples,it is concluded that there are 1 500 species(including subspecies) of vascular plants belonging to 572 gen...Based on the thorough investigation of the components of urban forest in Nanjing and the collection of samples,it is concluded that there are 1 500 species(including subspecies) of vascular plants belonging to 572 genera of 172 families,among which there are 63 species of ferns belonging to 36 genera of 25 families,1 437 species of seed plants belonging to 536 genera of 147 families.The characteristics are that the flora is rich in species,complex in geographic composition,and possess the distinct transferring quality from tropical to temperate zone.Besides,it is characterized with certain ancient nature,and the peculiar elements are comparatively simple.展开更多
文摘The flora of eastem China is the main part of Sino-Japanese floristic region. It shows by the analysis and com-parison that the floristic relations of Eastem China with Japan are closer than that ofnortheast China with Korea. The simi-larity indices of genera and species of seed plants in the two regions are very high, being 72.6% and 43.3% respectively.The strure and species compositi6n of broad-leaved evergreen forests in the two regions are also similar, in which there'exist the corresponding communities, such as the forests of Castanopsis carlesii,C.Sieboldii.. Many plants in Easter Chinaare nonspecilic with those in Japan, e. g, Cercidiphyllum japonicum, Magolia sieboldii, Nandina domestica etc.. Though thegnera Ginkgo, Liriodendron, Sassafixis etc. existing now in China are extinct from Japan, their fossils have been discov-ered from the Tertiary Strata in Japan. It seems to indicate that the Phytogeographical affinities between Japan and E. Chinawas closer in ancient time than it is now; and both of the forest floras originated from one same flora. The flora in Japan did not evolve indepently until it separated from Chinese continent and drifted to northeast in the late period of the Tertiary.
文摘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.
文摘Based on the thorough investigation of the components of urban forest in Nanjing and the collection of samples,it is concluded that there are 1 500 species(including subspecies) of vascular plants belonging to 572 genera of 172 families,among which there are 63 species of ferns belonging to 36 genera of 25 families,1 437 species of seed plants belonging to 536 genera of 147 families.The characteristics are that the flora is rich in species,complex in geographic composition,and possess the distinct transferring quality from tropical to temperate zone.Besides,it is characterized with certain ancient nature,and the peculiar elements are comparatively simple.
