논문 상세보기
pp.119-129
We compared equilibrium evaporation(Eequili) eddy-covariance(Eequili) with soil moisture data(ESMseries) which were measured with a 2 hours sampling interval at three points for a humid forest hillslope from May 5th to May 31th in 2009. Accumulations of Eeddy, Eequili for the study period were estimated as 2.52, 3.28 mm and those of ESMseries were ranged from 1.91 to 2.88 mm. It suggested that the eddy-covariance method considering the spatial heterogeneity of soil evaporation is useful to evaluate the soil evaporation. Method A, B and C were proposed using mean meterological data and daily moisture variation and the computations were compared to eddy-covariance method and equilibrium evaporation. The methods using soil moisture data can describe the variations of soil evaporation from eddy-covariance through simple moving average analysis. Method B showed a good matched with eddy-covariance method. This indicated that Dry Surface Layer (DSL) at 14:00 which was used for method B is important variable for the evaluation of soil evaporation. The total equilibrium evaporation was not significantly different to those of the others. However, equilibrium evaporation showed a problem in estimating soil evaporation because the temporal tendency of Eequili was not related with the those of the other methods. The improved understanding of the soil evaporation presented in this study will contribute to the understandings of water cycles in a forest hillslope.
1. 서 론
2. 재료 및 방법
2.1. 연구지역 및 토양수분 관측
2.2. 토양수분자료를 이용한 토양증발계산
2.3. 지표면에서의 에너지균형방정식을 이용한 DSL결정
2.4. 토양수분자료를 이용한 일평균 토양증발계산
2.5. 평형증발식 및 토양증발변화 경향비교방법
3. 결과 및 고찰
3.1. 시간단위의 에너지 및 증발량 변화 비교
3.2. 토양증발 깊이(DSL) 결정
3.3. 에디-공분산법, 평형증발식 그리고 Method A, B,C의 토양증발비교
4. 결 론
참 고 문 헌
