Submitted to: Society for Range Management Meeting Abstracts
Publication Type: Proceedings
Publication Acceptance Date: 2/13/1994
Publication Date: N/A
Technical Abstract: Evapotranspiration (ET) which includes evaporation from soil and water surfaces, and transpiration from plants, is the major component of the water balance for semiarid and arid rangelands. Bowen ratio-energy balance instrumentation was used to measure ET from six rangeland plant communities, five sagebrush and one aspen, on the Reynolds Creek Experimental Watershed in southwest Idaho from 1988 through 1992. The annual precipitation ranged from 300mm to 764mm on the locations that ranged in elevation 1414m to 2097m, respectively. Maximum daily ET amounts varied from 4.0mm at the drier sagebrush sites to 5.3mm at the wetter sagebrush sites and the aspen site had a maximum daily ET of 6.4mm. There were also good relationships between available soil water, leaf area index (LAI) and daily ET rates for the different plant communities.