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http://dx.doi.org/10.4491/KSEE.2012.34.2.086

$N_2O$ Emissions with Different Land-Use Patterns in a Basin  

Seo, Ju-Young (Department of Civil and Environmental Engineering, Yonsei University)
Kang, Ho-Jeong (Department of Civil and Environmental Engineering, Yonsei University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.34, no.2, 2012 , pp. 86-90 More about this Journal
Abstract
The gaseous product of nitrogen cycle, nitrous oxide ($N_2O$) is a potent greenhouse gas whose Global Warming Potential (GWP) is about 300 times greater than $CO_2$. The dynamics of $N_2O$ emission are controlled by such environments and soil conditions. The main aim of this study is to investigate variations of $N_2O$ emission and its controlling factors with different land-use patterns in Haean basin. A forest, a radish field and a rice paddy were selected as three different land-use patterns. Their $N_2O$ emissions were measured every month during a growing season. We also collected soil samples with seasons and analyzed soil characteristics including inorganic nitrogen content. $N_2O$ emission was greatest at the radish field likely due to anthropogenic nitrogen addition by fertilization. Soils of forest and rice paddy also contained inorganic nitrogen originated from organic matter. However, the spatial variation was great and it looks that nitrogen cycle and $N_2O$ production were slower than that of radish field. Intensive observation and control of fertilization would be requiredto adjust $N_2O$ emission from agriculture soils.
Keywords
Nitrous Oxide; $N_2O$; Fertilization; Land-Use Pattern; N-Cycle;
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