water potential gradient

基本解释

Water potential reflects energy level of soil water and the gradient of water potential is an impotent factor describing direction and velocity of water flow.
水势反映土壤水的能态，而水势梯度则是决定水流方向和速度的重要因素。
It shows that temperature gradient and soil water potential gradient presented in the soil are the drive factor of salt accumulation in the winter because of the presentation of frozen layer.
研究表明，盐沼湿地冻结期，由于冻层的存在，土体内产生的温度梯度、水势梯度，是冬季水盐积累的驱动力。
According to the moisture potential gradient and soil water content in different depth, the author calculate water volume of soil water discharge groundwater by the method of soil water flux.
根据实测的土壤水势和土壤含水量资料，利用土壤水分通量法计算了土壤水补给地下水量，结果表明土壤水分通量法是一种简单易行的计算土壤水补给地下水量的方法。