Estimates of Evapotranspiration in Alkaline Scrub and Meadow Communities of Owens Valley, California, Using the Bowen-Ratio, Eddy-Correlation, and Penman-Combination Methods

摘要

In Owens Valley, evapotranspiration (ET) is one of the largest components of outflow in the hydrologic budget and the least understood. ET estimates for December 1983 through October 1985 were made for seven representative locations selected on the basis of geohydrology and the characteristics of phreatophytic alkaline scrub and meadow communities. The Bowen-ratio, eddy-correlation, and Penman-combination methods were used to estimate ET. The methods described in the report may be used for studies in similar semiarid and arid rangeland areas in the Western United States.