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The Role of Soil Moisture in Evapotranspiration 1

J. R. Eagleman, Wayne L. Decker

Open publisher page 20 citations

Abstract

Synopsis The regression between soil moisture deficit and the relative evapotranspiration was curvilinear with a correlation coefficient of .72. A negative linear regression described the relationship between the soil moisture potential and the relative evapotranspiration with a simple correlation coefficient of −.74. The relationship between unsaturated conductivity and the relative evapotranspiration rate was investigated by designing a laboratory experiment which showed that plants growing in this soil wilted as the unsaturated conductivity dropped from 8.89 cm./day/joule to 0.77 cm./day/joule.

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What this paper is about

Synopsis The regression between soil moisture deficit and the relative evapotranspiration was curvilinear with a correlation coefficient of .72. A negative linear regression described the relationship between the soil moisture potential and the relative evapotranspiration with a simple correlation coefficient of −.74. The relationship between unsaturated conductivity and the relative evapotranspiration rate was investigated by designing a laboratory experiment which showed that plants growing in this soil wilted as the unsaturated conductivity dropped from 8.89 cm./day/joule to 0.77 cm./day/joule.

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Available abstract

Synopsis The regression between soil moisture deficit and the relative evapotranspiration was curvilinear with a correlation coefficient of .72. A negative linear regression described the relationship between the soil moisture potential and the relative evapotranspiration with a simple correlation coefficient of −.74. The relationship between unsaturated conductivity and the relative evapotranspiration rate was investigated by designing a laboratory experiment which showed that plants growing in this soil wilted as the unsaturated conductivity dropped from 8.89 cm./day/joule to 0.77 cm./day/joule.

Key concepts: Evapotranspiration, Water content, Correlation coefficient, Relative humidity, Environmental science, Soil water, Linear regression, Moisture

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