The actual evapotranspiration as a function of the potential evapotranspiration and the soil moisture tension.

Abstract

Lysimeter observations with a clay and a peat soil indicated that the actual evapotranspiration of grassland falls below the potential evapotranspiration while the soil is still drying, the fall being less for peat than for clay. The rate of reduction depends on the moisture tension of the soil and on the intensity of the potential evapotranspiration. The real evapotranspiration may keep up with the potential evapotranspiration of a definite intensity; the wetter the soil, the higher the intensity at which reduction begins to occur. (Abstract retrieved from CAB Abstracts by CABI’s permission)