Evaluating Evapotranspiration for Grasslands on the Arid Lands Ecology Reserve,Benton County, and Turnbull National Wildlife Refuge, Spokane County, Washington, May 1990 to September 1991

摘要

The report describes the first and second phases of a study on ET for grasslandsin eastern Washington. This report presents results of ET research at four grasslands in eastern Washington. This report presents results of ET research at four grassland sites in eastern Washington: two on the Arid Lands Ecology (ALE) Reserve near Richland and two on the Turnbull National Wildlife Refuge (NWR) near Cheney. The ALE Reserve sites were in (1) a full-canopy grassland in Snively Basin (Snively Basin site) and (2) a sparse-canopy grassland near the base of an alluvial fan adjustment to two weighing lysimeters (grass lysimeter site). The Turnbull NWR sites were in (1) a meadow-steppe grassland (Turnbull meadow site) and (2) a marsh grassland (Turnbull marsh site). This report evaluates ET analyses made at the four sites for various periods in 1990 and 1991. Also, the report compares methods used to calculate ET and discusses the differences between them.