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http://dx.doi.org/10.11614/KSL.2013.46.1.075

Change of Organic Matter Decomposition Rates and Greenhouse Gas Emission of the Soil of Gyeongan Stream under Different Environmental Conditions  

Choi, In Young (Department of Environmental Science and Engineering, Ewha Womans University)
Kang, Min Kyoung (Department of Environmental Science and Engineering, Ewha Womans University)
Choi, Jung Hyun (Department of Environmental Science and Engineering, Ewha Womans University)
Publication Information
Korean Journal of Ecology and Environment / v.46, no.1, 2013 , pp. 75-85 More about this Journal
Abstract
This study investigated the effects of organic matter decomposition on the emission of greenhouse gas under the influence of environmental factors such as change of climate condition ($CO_2$ concentration and temperature), vegetation, and N concentration in the soil of Gyeongan stream in the laboratory. The experimental results showed that organic matter decomposition and $CH_4$, $CO_2$ flux were influenced by changes of complex environmental conditions. Organic matter decomposition rate was affected by changes of climate condition with N concentration and climate condition with vegetation. Through the results of $CH_4$, $CO_2$ flux, $CH_4$ flux was affected by change of climate condition with N concentration and climate condition with vegetation and affected by the presence of vegetation and N concentration. $CO_2$ flux was affected by change of climate condition with vegetation and vegetation with N concentration. According to results of the study, change of (1) climate conditions, (2) vegetation, and (3) N concentration, each have an effect on organic decomposition rate, that also influences emission of greenhouse gas. It is known that climate change is related to an increase in greenhouse gasses in the atmosphere However, additional study will be needed whether vegetation could remove positive effect of nitrogen addition in soil since this study shows opposite results of organic matter decomposition in response to the nitrogen addition.
Keywords
climate change; nitrate; vegetation; decomposition rate; greenhouse gas; flux;
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