Abstract: This paper presented informal,ion on transpiration of Artemisia transiliensis and Carex liparocarpos.The data indicate that,process of transpiration in daylight,is single peak which appears at noon,moreover,transpirationintensity of Carex liparocarpos is greater thaz that of Artemisia transiliensis.In a short period (one month) and in a small area (three ha),and on different slope the difference of transpiration intensity of the same species can not be measu-red.The transpiration intensity is closely related to soil temperature.Diffe-rence between air temperature and relative humidity in vertical gradient is very small and its influence on transpiration of Artermisia transiliensis is also very small in sagebrush desert.