Soil respiration of forest ecosystems in Japan and global implications |
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Authors: | Email author" target="_blank">Mi-Sun?LeeEmail author Wen Hong?Mo Hiroshi?Koizumi |
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Institution: | (1) Institute for Basin Ecosystem Studies, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan;(2) Agro-Meteorology Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan |
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Abstract: | Within terrestrial ecosystems, soil respiration is one of the largest carbon flux components. We discuss the factors controlling
soil respiration, while focusing on research conducted at the Takayama Experimental Site. Soil respiration was affected by
soil temperature, soil moisture, rainfall events, typhoons, and root respiration. We consider the temporal and spatial variability
of soil respiration at the Takayama Experimental Site and review the variability of annual soil respiration in Japanese forests.
In the 26 compiled studies, the values of annual soil respiration ranged from 203 to 1,290 g C m−2 year−1, with a mean value of 669 g C m−2 year−1 (SD=264, CV=40). We note the need for more studies and data synthesis for the accurate prediction of soil respiration and
soil carbon dynamics in Japanese forests. Finally, several methods for measuring soil respiration rates are compared and the
implications of soil respiration rates for global climate change are discussed. |
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Keywords: | Annual soil respiration Rainfall event Soil temperature Soil moisture Takayama Experimental Site Typhoon |
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