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잔디밭에서 지온에 대한 이산화탄소 플럭스의 민감도(Q10) 분석

Sensitivity Analysis (Q10) of Carbon Dioxide Flux with Soil Temperature in the Grassplot

한국환경과학회지 2019년 28권 9호 p.785 ~ 795
강동환 ( Kang Dong-Hwan ) - 부경대학교 환경연구소

소윤환 ( So Yoon-Hwan ) - 부경대학교 환경연구소
권병혁 ( Kwon Byung-Hyuk ) - 부경대학교 환경대기과학과
김박사 ( Kim Park-Sa ) - 부경대학교 환경대기과학과

Abstract


In order to analyze the sensitivity of carbon dioxide flux by soil temperature in the grassplot, carbon dioxide flux and soil temperature were observed 24 times from March, 2010 to March, 2011 at nine sites in the grassplot. The average of CO2 in the grassplot is 2.2~36.7°C, the highest in August, the lowest in January, and the average of carbon dioxide flux is 12~1479 mgCO2?m-2?hr-1, and the carbon dioxide emission from the grassplot to the atmosphere was 10 times higher in summer than in winter. The temperature response coefficient estimated by the exponential function of carbon dioxide flux according to soil temperature was ranged from 0.1065 to 0.1274, and the increase tendency of CO2 flux with soil temperature was linear at 0~2 0°Cand exponential at 20~40°C. The Q10 values for each of nine observation sites on the grassplot was in the range of 2.901 ~ 3.575, and the Q10 value using the total data observed in the lawn was estimated to be 3.374. In the homogeneous grassplot area, the average of Q10 values by observation point and the Q10 value by the total data were estimated similarly.

키워드

Grassplot; Soil temperature; Carbon dioxide flux; Q10
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