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Components and seasonal variation of night-time total ecosystem respiration in a Japanese broad-leaved secondary forest Cover

Components and seasonal variation of night-time total ecosystem respiration in a Japanese broad-leaved secondary forest

Open Access
|Jan 2006

Abstract

The Yamashiro Experimental Forest is a broad-leaved secondary forest in Kyoto, Japan. On its complex terrain, low wind speed, high air stability, and local advection are common at night. To reduce the uncertainty in measuring woody-tissue respiration at night, we used automated stem chambers to measure stem respiration continuously (for 5 min at 30 min intervals) on stems of Quercus serrata Murr. (deciduous) and Ilex pedunculosa Miq. (evergreen) throughout 2003. Using these data, we estimated night-time respiration for the total ecosystem and its various components, and we report foliar and soil respiration rates for 2003. Annual average night-time respiration of soil, evergreen leaf, deciduous leaf, evergreen woody tissue and deciduous woody tissue were estimated as 0.0794 (63.2%), 0.0101 (8.0%), 0.0160 (12.7%), 0.0064 (5.1%) and 0.0137 (10.9%) mg CO2 m-2 s-1, respectively. The contribution of soil respiration to the total ecosystem respiration rate reached its minimum (49.1%) on 12 June (DOY 163) and its maximum (82.4%) on 29 November (DOY 333). Seasonal change of growth respiration was marked, indicating that the seasonal variation of growth respiration must be evaluated carefully to estimate total ecosystem respiration. Therefore, long-term continuous measurement using automated chambers and averaging provides an effective means of evaluating the annual night-time ecosystem respiration.

Language: English
Page range: 550 - 559
Submitted on: Jan 4, 2006
Accepted on: Jun 19, 2006
Published on: Jan 1, 2006
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services

© 2006 Takafumi Miyama, Yuji Kominami, Koji Tamai, Yoshiaki Goto, Teruhiko Kawahara, Mayuko Jomura, Masako Dannoura, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.