농업용 용수로의 관개기 온실가스 배출특성 분석 - 백곡저수지 사례로 -

Abstract

The purpose of this study was to analyze the greenhouse gas emission characteristics during the irrigation period of the Baegok Reservoir irrigation canals, both concrete and soil, by measuring emissions from May to September. To analyze the greenhouse gases in the irrigation canals, CH4 and CO2 were measured using a closed floating chamber. Greenhouse gas emissions were measured once or twice a month to determine representative emission times throughout the day and to calculate emissions by period. The relationship between the irrigation water’s Total Organic Carbon (TOC) and air temperature was also analyzed. Based on the measurement results from 8 AM to 4 PM, the representative emission time for the concrete canal (ICC) was calculated as 8 AM, while the soil canal (ICS) showed similar results to the average at 10 AM. The CO2 equivalent of the ICC during the irrigation period was 0.68 kg/ha/day, which was lower than the 1.03 kg/ha/day of the ICS. When comparing TOC and air temperature with CH4 flux for each irrigation canal, it was found that ICS was more significantly influenced by TOC and air temperature.