• 제목/요약/키워드: Cammellia japonica

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한반도 동백나무(Camellia japonica)림에 대한 군락분류 (Study of Community Classification Camellia japonica Forest in the Korean Peninsula)

  • 진영규;김인택
    • 생명과학회지
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    • 제15권5호
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    • pp.767-771
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    • 2005
  • 본 연구는 1999년 5월부터 2003년 2월까지 현지조사 또는 문헌조사에 의하여 한반도 동백나무 분포대에서 263개의 방형구를 설정하였다. 이를 기초로 하여 식생단위를 추출하기 위해서 종조성표와 종합상재도표(Table 1)를 작성하였다 본 연구에서 한반도의 상록활엽수림은 동백나무를 중심으로 9개의 군집(群集)을 설정할 수 있다. 즉 동백나무전형군집, 동백나무-후박나무군집, 동백나무-곰솔군집, 동백나무-구실잣밤나무군집, 동백나무-까마귀쪽나무군집, 동백나무-모밀잣밤나무군집, 동백나무-붉가시나무군집, 동백나무-참식나무군집, 동백나무-생달나무군집으로 정의되었다.

다도해 해상 국립공원 상록활엽수의 수분상태와 광합성능 (Water Status and Photosynthetic Activities of Evergreen Broad-leaved Trees in Dadohae National Marine Park)

  • Ihm, Byung-Sun;Gae-Hong Suh;Jeom-Sook Lee
    • The Korean Journal of Ecology
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    • 제16권3호
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    • pp.353-364
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    • 1993
  • To elucidate ecophysiological factors affecting nutural distribution of evergreen broad-leabed trees in Danohad National Marine Park, water potential, relative water content and photosynthetic activities of 4 species, Cammellia japonica, Machilus thunbergii, Castanopsis cuspidata var.sieboldii and Quercus acuta, were potential began to decrease from 07:00h to its minimum value at 13:00h for C. cuspidata var. sieboldii (-14.3bar) and Q. acuta (-19.4bar) at 16:00 h for M. thunbergii(-17.0bar) and at 19:00 h for C. japonica (-14.5bar), and these showed similar trends to relative water content. Photosynthetic activities of 4 species began to increase from 7:00 h and reached maximum values before their minimum values of water potential occureed. Optimum temperature renges of photosynthetic activities was $18~20^{\circ}C$ for C. japonica - M. thunbergii and $14~16^{\circ}C$ for C. cuspidata var. sieboldii Quercus acuta.Q.acuta had the highest light saturation point of $0.4mM/m^2/s$ and C. japonica the lowest of $0.15mM/m^2/s$. Water potential of 4 species subjected to water stress, began to decrease after 1st day of drought and after 21th day of drought, those of C. japonica, M. thunbergii, C. cuspidata var. sieboldii and Q. acuta decreased to species began to decrease after 7th day of drought and after 21th day, those of M. thunbergii, C. cuspidata var. sieboldii and Q. acuta were dropped to about 50% and C. japonica 83.5%. Photosynthetic activity of 4 specie began to decline in the order of C. cuspidata var. sieboldii, Q.acuta, C. japonica and M. thunbergii after 10th day of drought. These results suggest that the segregated disributions of C. japonica - M. thunbergii on vally positions and C. cuspidata var. sieboldii - Q. acuta on slopes were associated with different responses of water status and photosyntheties to their environment.

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