Abstract |
Evapotranspiration was measured from low sagebrush covered range land at the Reynolds Creek Experimental Watershed, Reynolds, Idaho. The objectives of the study were twofold: To measure the magnitude of and variation in evaporative flux rates for low sagebrush range; and to identify those parameters of the microclimate which were significant in causing daily and hourly variation in flux rates. Evapotranspiration (E.T.) from the low sagebrush range (38% crown cover), using the Bowen-ratio technique, indicates typical E.T. rates of 0.025 - 0.40 mm/hr. Losses during daylight hours ranged from 1.27 - 3.0 mm and represented 33 - 46% of the net radiation. Advection of sensible heat was negligible. Soil moisture during the May - June period ranged from 17 - 40% by volume. (Author) |