Actual Evapotranspiration as Determined from Soil-Water and Canopy Characteristics and Potential Evapotranspiration

摘要

Water loss from soils supporting vegetation is due to either evapotranspiration or drainage. These two components of the water balance of the crop are the most difficult to either measure or calculate. Both advancement in hydrology and increased water use efficiency requires a better understanding of the physics of evapotranspiration under drouthy conditions and drainage when the soil is wet. We have investigated means of calculating both of these components of the hydrologic balance from primary climate, soil, and plant parameters. (Author)