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ID 20746
本文ファイル
著者
Kim, Myung Hyun
Nakane, Kaneyuki
Lee, Jeong Taek
Bang, Hae Son
Na, Young Eun
キーワード
Japanese red pine
maintenance respiration
pipe model theory
Q10
stem respiration rate
stem temperature
NDC
生物科学・一般生物学
抄録(英)
Stem/branch maintenance respiration for a stand of Japanese red pine (Pinus densiflora) during the dormant season was examined using an open flow system. The stem/branch respiration rates per unit of volume were closely related to the thickness of the stems and branches, e.g. it decreased with increasing diameter (p<0.0001). When the respiration rates on the various positions were regressed against the stem temperature of the specific position, Q10 values decreased with increasing diameter. The variation of Q10 ranged from 1.28 to 6.4. These Q10 variations should have represented the variation of stem/branch temperature within the tree. The increase in time lag corresponded with an increase in diameter. We estimated the annual maintenance respiration for stem and branches at stand level based on the respiration rate-diameter relation, the Q10-diameter relation, and the pipe model theory. In the Pinus densiflora stand, total annual maintenance respiration was estimated to be 2.55 tCha-1yr-1 (1.40 tCha-1yr-1 for stems, and 1.15 tCha-1yr-1 for branches). This suggests that branch respiration is an important component of total aboveground woody respiration at the stand-level (about 45%). Within the distribution of annual maintenance respiration rates for each D class, the stem and branch of 25-30 cm D class was the highest, and accounted for 33% and 31% of total stem and branch respiration rates, respectively. According to our results and those of previous studies, maintenance respiration correlated positively with annual mean temperature and LAI, and correlated negatively with stand age and latitude.
掲載誌名
Forest Ecology and Management
243巻
2-3号
開始ページ
283
終了ページ
290
出版年月日
2007-03-31
出版者
Elsevier Science B.V.
ISSN
0378-1127
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2007 Elsevier B.V.
関連情報URL
部局名
生物圏科学研究科