水势梯度 meaning in Chinese

water potential gradient

The phase change of soil moisture and inflation of the frozen moisture c ause the reduction of hydraulic conductivity by reducing the area of flow section and the aperture of soil pore space , increasing the capillary resisting force to soil moisture , and decreasing the water potential gradient because of the increasing of movement distances of soil water
导水率减小是冻结土壤入渗能力减小的根本原因，而土壤中液态水的相变是导水率减小的根源所在。土壤水分的相变及其膨胀通过减小土壤水分过水断面面积和孔隙孔径，增大阻力和由于增长运动距离而减小水势梯度使冻结土壤的导水率降低。
When water in the soil or in the xylem is put under tension , due to the evaporation of water from a particular site ( which creates a water potential gradient in the direction of the evaporation ) , capillarity enables water to overcome the cohesive forces within the water and move against gravity in response to the water potential gradient
当土壤中或木质部中的水受到张力作用时，由于特定部分水的蒸发（沿着蒸发方向形成水势梯度），毛细现象可以使水克服水分子之间的内聚力并同时沿着水势梯度逆着重力作用移动。