Temperature Dependence of Heterotrophic Respiration Rate of Coarse Woody Debris-Influence of Measurement Depth on Evaluation of the Temperature Dependence-
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- JOMURA Mayuko
- Graduate School of Science and Technology, Kobe University
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- KOMINAMI Yuji
- Kansai Research Center, Forestry and Forest Products Research Institute
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- DANNOURA Masako
- Graduate School of Science and Technology, Kobe University
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- KANAZAWA Yoichi
- Graduate School of Science and Technology, Kobe University
Bibliographic Information
- Other Title
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- 粗大有機物の分解呼吸速度の温度依存性について―温度測定深度が温度依存性評価に及ぼす影響―
- ソダイ ユウキブツ ノ ブンカイ コキュウ ソクド ノ オンド イゾンセイ ニ ツイテ オンド ソクテイ シンド ガ オンド イゾンセイ ヒョウカ ニ オヨボス エイキョウ
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Abstract
We measured CO2 flux from coarse woody debris (CWD) of Pinus densiflora and Quercus serrata using automated chamber systems. To investigate temperature dependence of the respiration rate, we also monitored temperatures at four depths near and within the CWD. The respiration rate of two CWD samples showed clear diurnal variations, with maximum values measured in the afternoon (1400-1500 h). The CWD temperatures also showed clear diurnal variations, although the time when the peak value was observed and the variation range of the temperature varied with measurement depth, resulting in different relationships between respiration rate and temperature at different depths. Q10 values calculated from the relationships varied about twice in magnitude depending on measurement depth, meaning that we must choose the appropriate depth to correctly evaluate temperature dependence. We assumed that the depth at which the r2 value was the highest was suitable to evaluate the temperature- dependent function correctly. From this analysis, we obtained the best-fit depth of temperature for an accurate evaluation of CWD respiration sensitivity to temperature.
Journal
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- Journal of Agricultural Meteorology
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Journal of Agricultural Meteorology 62 (3), 103-108, 2006
The Society of Agricultural Meteorology of Japan
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Details 詳細情報について
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- CRID
- 1390282679645310720
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- NII Article ID
- 10029869696
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- NII Book ID
- AA11530034
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- ISSN
- 18810136
- 00218588
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- NDL BIB ID
- 8092281
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed