Study on Heat Budget Characteristics and Evaporanspiration for Tamaris Spp

The Bowen ratioenergy balance can be used widely in observing the evapotranspiration of all kinds of scrubby vegetable. In this paper, the improved Bowen ratioenergy balance system is used in observing the evapotranspiration of Tamarix spp. Through the measurement of sensible heat, latent heat and soil heat fluxes from June to September, the evapotranspiration of Tamarix sppis 335.31 mm; the latent heat flux, 62.85 percent of total energy; and sensible heat flux, 32.85; while the soil heat flux, 4.44 in August. As for their daily variation, the latent heat flux is larger than the sensible heat flux in the moring, but vice versa in the afternoon.