Evaluation of CO₂ Balance in the Barley-Red Pepper and Barley-Soybean Cropping System
2008
Kim, G.Y. (National Academy of Agricultural Science, RDA, Suwon, Republic of Korea), E-mail: [email protected] | Suh, S.U. (National Academy of Agricultural Science, RDA, Suwon, Republic of Korea) | Ko, B.G. (National Academy of Agricultural Science, RDA, Suwon, Republic of Korea) | Jeong, H.C. (National Academy of Agricultural Science, RDA, Suwon, Republic of Korea) | Roh, K.A. (National Academy of Agricultural Science, RDA, Suwon, Republic of Korea) | Shim, K.M. (National Academy of Agricultural Science, RDA, Suwon, Republic of Korea)
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 6.3 ton CO₂ ha-¹ for N-P-K chemical fertilizer treatment plot and 10.6 ton CO₂ 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 12.0 ton CO₂ ha-¹ for N-P-K chemical fertilizer treatment plot and 13.2 ton CO₂ ha-¹ for N-P-K chemical fertilizer with swine manure treatment plot. Soil carbon storage rate was estimated to be 0.7 ton C ha-¹ for the barley-soybean cropping system and 0.5 ton C ha-¹ for the barley-pepper cropping system. In appeared that agricultural lands may contribute to the greenhouse effect as a potential carbon sink preserving carbon into soil.
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