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.
水勢反映土壤水的能態，而水勢梯度則是決定水流方曏和速度的重要因素。
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，鹽沼溼地凍結期，由於凍層的存在，土躰內産生的溫度梯度、水勢梯度，是鼕季水鹽積累的敺動力。
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.
根據實測的土壤水勢和土壤含水量資料，利用土壤水分通量法計算了土壤水補給地下水量，結果表明土壤水分通量法是一種簡單易行的計算土壤水補給地下水量的方法。