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Evaluation of CO2 Balance in the Barley-Red Pepper and Barley-Soybean Cropping System  

Kim, Gun-Yeob (National Academy of Agricultural Science(NAAS), RDA)
Suh, Sang-Uk (National Academy of Agricultural Science(NAAS), RDA)
Ko, Byung-Gu (National Academy of Agricultural Science(NAAS), RDA)
Jeong, Hyun-Cheol (National Academy of Agricultural Science(NAAS), RDA)
Roh, Kee-An (National Academy of Agricultural Science(NAAS), RDA)
Shim, Kyo-Moon (National Academy of Agricultural Science(NAAS), RDA)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.41, no.6, 2008 , pp. 408-414 More about this Journal
Abstract
Importance of climate change and its impact on agriculture and environment has increased with the rise Green House Gases (GHGs) concentration in the atmosphere. To slow down the speed of climate change many efforts have been applied in industrial sectors to reduce GHGs emission and to enhance carbon storage. In agricultural sector, many researches have been performed on GHGs emission reduction, but few on the role of carbon sink. In this study, we investigated carbon balance and soil carbon storage in agricultural field in the barley-red pepper and barley-soybean cropping system. With the system for automatic measuring of carbon dioxide, net ecosystem production(NEP) was estimated to be $6.3ton\;CO_2\;ha-1$ for N-P-K chemical fertilizer treatment plot and $10.6ton\;CO_2\;ha^{-1}$ for N-P-K chemical fertilizer with swine manure treatment plot in the barley-soybean rotation cropping. In the barley-red pepper rotation cropping, it was $12.0ton\;CO_2\;ha^{-1}$ for N-P-K chemical fertilizer treatment plot and $13.2ton\;CO_2\;ha^{-1}$ for N-P-K chemical fertilizer with swine manure treatment plot. Soil carbon storage rate was estimated to be $0.7ton\;C\;ha^{-1}$ for the barley-soybean cropping system and $0.5ton\;C\;ha^{-1}$ for barley-pepper cropping system. In appeared that agricultural lands may contribute to the greenhouse effect as a potential carbon sink preserving carbon into soil.
Keywords
Carbon Cycle; Soil Organic Carbon(SOC); Soil Respiration(SR); Net Primary Production(NPP); Net Ecosystem Production(NEP);
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