한국농림기상학회지, 제 9권 제3호(2007) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 9, No. 3, (2007), pp. 203~208
DOI: 10.5532/KJAFM.2007.9.3.203
ⓒ Author(s) 2014. CC Attribution 3.0 License.


소나무(Pinus densiflora) 줄기의 목부조직호흡

김명현(1), Kaneyuki Nakane(2), 나영은(1), 이정택(1)
(1)농업과학기술원 환경생태과,
(2)Division of Environmental Dynamics and Management, Graduate School of
Biosphere Sciences, Hiroshima University

(2007년 03월 09일 접수; 2007년 03월 29일 수락)

Woody Tissue Respiration in Stems of Red Pine
(Pinus densiflora) Trees

Myung Hyun Kim(1), Kaneyuki Nakane(2), Young Eun Na(1),, Jeong Taek Lee(1)
(1)Environment and Ecology Division, National Institute of Agricultural Science and Technology,
RDA, Suwon 441-707, Korea
(2)Division of Environmental Dynamics and Management, Graduate School of Biosphere Sciences,
Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan

(Received March 09, 2007; Accepted March 29, 2007)

ABSTRACT
The woody tissue respiration rates in stems (Rstem) of red pine (Pinus densiflora Sieb. et Zucc.) forest in Higashi-Hiroshima, west Japan, were measured using an open flow measurement system with several chambers in two seasons (the winter and summer in 2002). Rstem ranged from 0.25 to 0.55μmol m-2s-1 in winter, and from 1.25 to 1.63μmol m-2s-1 in summer. The variability of Rstem among the sampled trees (n=15) was similar between the two seasons, with the coefficient variation of about 23%. The numbers of sampling points required to estimate the stem respiration rate within 10 to 20% of its actual value were 24 and 6, respectively in both seasons (probability level is 95%). Based on the relationship between stem temperature and average Rstem the Q10 values of the winter and summer seasons were 1.49 and 1.45, respectively. The R20(Rstem at 20oC of stem temperature) was higher in summer (1.23μmol m-2s-1) than winter (0.61μmol m-2s-1). The woody tissue respiration in stems of red pine trees during the summer season amounted about 50% of the total respiration rates.

Keyword: , Red pine forest, Woody tissue respiration rate, Stem temperature

MAIN

적요

본 연구에서는 동시에 여러 지점을 측정할 수 있는 open flow 시스템을 이용하여 소나무 줄기에서 발생하는 호흡을 겨울과 여름 두 시기에 측정하였다. 연구결과, 줄기의 목부조직에서 호흡속도(Rstem)는 겨울에 0.25-0.55 μmol m-2s-1, 여름에 1.25-1.63 μmol m-2s-1의 범위를 나타냈다. 시기별 측정된 수목(15개체)간 Rstem의 변화성은 변동계수로 나타낼 수 있으며, 그 결과 여름과 겨울이 모두 23%로 시기에 따른 차이를 보이지 않았다. 이러한 변동계수 값에 근거하면 Rstem이 95% 신뢰수준에서 실제 값과의 차이가 10%와 20% 보다 적기 위해서는 샘플링 수가 각각 최소 24개와 6개가 필요한 것으로 확인되었다. 또한 겨울과 여름의 온도와 개체간 평균 Rstem의 상관관계에서, Q10값은 겨울이 1.49, 여름이1.45로 계절간에 큰 차이를 나타내지 않았다. 그러나 R20(줄기 온도 20oC일 때의 Rstem)은 겨울(0.61 μmol m-2s-1)보다 여름(1.23 μmol m-2s-1)이 두 배 정도 컸다.

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