The difference between RN and sum of LE, Hs and soil heat flux on a cloudy day is bigger than that on a clear day as well as it in Gobi is bigger than that in grassland.

• 两地均存在能量不平衡现象，草原感热、潜热、土壤热通量之和小于净辐射，戈壁感热、潜热、土壤热通量之和大于净辐射，戈壁能量不平衡大于草原。