Abstract:Compared with bare land, soil hydrological characteristics of three kinds of saline bringing, xerophytic bringing and saline herbaceous were researched in shell ridge island of the Yellow River Delta. Results indicated that compared with bare land, the soil bulk density of three vegetation types decreased by 8.5%~20.8%, soil total porosity increased by 17.1%~46.1%, the effect of xerophytic bringing vegetation in beach ridge zone was the best, the effect of saline herbaceous vegetation close to landside was the worst. The sequence of the soil permeability characteristics of different vegetation types was in the following increasing order: saline herbaceous vegetation close to landside < xerophytic bringing vegetation in beach ridge zone < saline bringing vegetation close to the seaside < bare land. The sequence of the soil saturated water and capillary water of the soil layer in 0-40 cm was in the following decreasing order: xerophytic bringing vegetation in beach ridge zone > saline bringing vegetation close to the seaside > saline herbaceous vegetation close to landside. The soil water storage performance and improved effect of the soil layer in 0-20 cm were better than that in 20-40 cm. The ability of soil water savings, salt reducing and soil improving of xerophytic bringing vegetation in beach ridge zone was the best, that of saline herbaceous vegetation close to landside was the worst.