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http://dx.doi.org/10.11626/KJEB.2017.35.1.013

Evaluating the Applicability of the DNDC Model for Estimation of CO2 Emissions from the Paddy Field in Korea  

Hwang, Wonjae (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University)
Kim, Yong-Seong (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University)
Min, Hyungi (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University)
Kim, Jeong-Gyu (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University)
Cho, Kijong (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University)
Hyun, Seunghun (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University)
Publication Information
Korean Journal of Environmental Biology / v.35, no.1, 2017 , pp. 13-20 More about this Journal
Abstract
Greenhouse gas emission from agricultural land is recognized as an important factor influencing climatic change. In this study, the national $CO_2$ emission was estimated for paddy soils, using soil GHG emission model (DNDC) with $1km^2$ scale. To evaluate the applicability of the model in Korea, verification was carried out based on field measurement data using a closed chamber. The total national $CO_2$ emission in 2015 was estimated at $5,314kt\;CO_2-eq$, with the emission per unit area ranging from $2.2{\sim}10.0t\;CO_2-eq\;ha^{-1}$. Geographically, the emission of Jeju province was particularly high, and the emission from the southern region was generally high. The result of the model verification analysis with the field data collected in this study (n=16) indicates that the relation between the field measurement and the model prediction was statistically similar (RMSE=22.2, ME=0.28, and $r^2=0.53$). More field measurements under various climate conditions, and subsequent model verification with extended data sets, are further required.
Keywords
carbon dioxide ($CO_2$) emission; DNDC; paddy field; national estimation;
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