Factors affecting soil respiration in reference with temperature’s role in the global scale |
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| Authors: | Fang Jingyun Zhao Kun and Liu Shaohui |
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| Institution: | (1) Department of Urban & Environmental Science, Peking University, 100871 Beijing, P. R. China;(2) Research Center for Eco-Environment Sciences, the Chinese Academy of Sciences, 100085 Beijing, P. R. China;(3) Present address: Department of Biology, West Virginia, USA |
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| Abstract: | Soil respiration is CO2 evolution process from soil to atmosphere, mainly produced by soil micro-organism and plant roots. It is affected not only
by biological factors (vegetation, micro-organism, etc.) and environmental factors (temperature, moisture, pH, etc.), but
also more and more strongly by man-made factors. Based on literature survey, main factors affecting soil respiration were
reviewed. The relationship of soil respiration to latitude and to mean annual temperature were analyzed by using the data
measured from forest vegetation in the world. As a result, soil respiration rate decreased exponentially with an increase
of latitude, and increased with increasing temperature. Following the relationship between soil respiration and temperature,
Q10 value (law of Van Hoff) was obtained as 1.57 in the global scale.
This project was supported by National Natural Science Foundation of China to FJY (No. 3940003). |
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| Keywords: | effect factors Q10 value latitude soil respiration temperature |
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