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Clonal Forestry with Sugi (Cryptomeria japonica)
1993Since ancient times, sugi (Cryptomeria japonica D. Don) has been one of the most important conifer species in Japan. In the People’s Republic of China, descriptions of Cryptomeria foriunei Hooibrenk ex Otto et Dietr, are also found, however, it is not so popular in Chinese forestry (cf. Hashimoto 1983). In Taiwan, in 1896, the seeds of C. japonica were
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[Pollen dispersion of Cryptomeria japonica in autumn].
Arerugi = [Allergy], 1996To clarify the significance of pollen dispersion of Cryptomeria japonica in autumn, the distribution pattern of pollen dispersion using specimens collected from 1987 to 1995 by Durhum collector was examined. After the dispersion period in the spring, the pollen count was suddenly decreased.
A, Sugaya, H, Ohguchi, T, Tsuda
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[Investigation of Cryptomeria japonica pollinosis in Izu-Oshima].
Arerugi = [Allergy], 1995We surveyed by questionnaire 4,673 residents of Izu-Oshima who were 15 or more years of age with regard to Cryptomeria japonica pollinosis. The response rate was 22.3%. In the early spring, nasal symptoms were reported by 8.9% of the respondents, ocular symptoms by 5.7%, and dermal symptoms by 8.1%.
N, Kihara +6 more
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