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Automatic online testing methods of soil CO2 concentration |
Shunli WANG(), Zhanfeng LI, Youliang MA, Hu DENG, Liping SHANG |
Southwest University of Science and Technology of Sichuan, Mianyang 621010, China |
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Abstract An online extraction method for monitoring CO2 concentration during soil respiration is described based on the assay of gas pump and gas extraction with a dynamic air chamber. Also, a study is done on the relationship between data collected from online CO2 measurement and time, as well as the curve fitting. This method uses the optimization algorithm to extract the CO2 concentration in the soil respiration chamber, and sets up a mathematical model for online soil CO2 concentration extraction. It is verified that the extraction method is feasible with the automatic site detection. This method, which can reduce the volume of data redundancy and improve data reliability, has a high reference value for the similar characteristics of online data extraction, compared with the traditional CO2 detection methods during soil respiration.
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Keywords
deep soil respiration
online unattended monitoring
polynomial fitting
optimization
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Corresponding Author(s):
WANG Shunli,Email:xch@jcjsz.com
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Issue Date: 05 September 2011
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1 |
Baoyu C, Hongjun W, Jian Y (2009). Separation of soil respiration components and method for measuring soil respiration. Journal of Northeast Forestry University , 1(3): 96–99 (in Chinese)
|
2 |
Bo E, Pernille L P (2005). Subsurface CO2 dynamics in temperate beech and spruce forest stands. Biogeochemistry , 75(3): 479–506 doi: 10.1007/s10533-005-3690-9
|
3 |
Zhou C Y, Zhou G Y, Wang Y H (2005). Soil respiration of a coniferous and broad-leaved mixed forest in Ding Hu Shan Mountain, Guangdong Province. Journal of Beijing Forestry University , 27(4): 23–27 (in Chinese)
|
4 |
O’Neill K P, Kasischke E S, Richter D D (2002). Environmental controls on soil CO2 flux following fire in black spruce, white spruce and aspen stands of interior Alaska. Canadian Journal of Forest Research , 32(9): 1525–1541 doi: 10.1139/x02-077
|
5 |
Qiguo Z (2008). Improving knowledge of soil, innovating modern pedology. Acta Pedologica Sinica , 45(5): 771–777
|
6 |
Peng S LLi Y L, Ren H, Zhao P (2002). Progress in research on soil respiration under the global change. Advance in Earth Sciences , 17(5): 705–713 (in Chinese)
|
7 |
Wang Y S, Wang Y H (2003). Quick measurement of CH4, CO2 and N2O emissions from a short plant ecosystem. Adv Atmos Sci , 20(5): 842–844 doi: 10.1007/BF02915410
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