봄철 SWAT 모형의 산림 토양수분과 Terra MODIS 위성영상 NDVI와의 상관성 분석
The Correlation Analysis Between SWAT Predicted Forest Soil Moisture and MODIS NDVI During Spring Season
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참고문헌
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초록
Abstract
The purpose of this study is to identify how much the MODIS NDVI (Normalized Difference Vegetation Index) can explain the forest soil moisture simulated from SWAT (Soil and Water Assessment Tool) model. For ChungjuDam watershed (6,661.3 km2) which covers 82.2 % of forest, the SWAT model was calibrated for four years (2003-2006) at two locations of the watershed using daily streamflow data and was verified for three years (2000-2002) with average Nash and Sutcliffe model efficiencies of 0.69 and 0.75 respectively. For the period from March to June, the average spatial correlation between 16 days composite MODIS NDVI and the corresponding SWAT forest soil moisture was 0.90. The two variables averaged for each data set during that period showed an inverse relation with the average coefficient of determination of 0.55.
참고문헌 (14)
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