In order to investigate soil water storage and hold capacity under typical shrub vegetations in sh-ell island, Ziziphus jujube var.spinosa, Periploca sepium and Limonium bicolor located on the Yellow River Delta were analyzed in contrast with bare soil to determine the soil particle composition, water physical characteristics and soil water characteristic curves, to explore the water characteristic curve under different vegetation types. The results show that:(1) Shrub and grass can reduce gravel and coarse sand content, increase the content of fine sand and clay powder, including Z. jujuba var. spinosa can reduce the coarse sand significantly and increase clay content; P. sepium can reduce the gravel significantly and increase fine sand content; The role of herbs in the reduction of coarse sand and gravel content and increase of fine sand and powder clay content is weak.(2)Shrub vegetation can improve the soil properties and the effect of soil water storage ability. The sequence is as follows:Z. jujuba var. spinosa > P. sepium > grassland > bare land, reflected in the two indicators of effective rainfall and implicit rainfall. (3) The sequence of water holding capacity is as follows:Z. jujuba var. spinosa > P. sepium > grassland > bare land, and 0-15 cm soil water-holding capacity is more than 15-30 cm under the same vegetation type. The results show that the three kinds of vegetation types improve the soil physical properties and the function of water storage and soil preservation. The shrubs are better than the grassland, among which the Z. jujuba var. spinosa is the strongest, and the grassland is the worst. Improving effects of the soil physical property, soil potential water storage and holding capacity of shell sand soil are evaluated as follows:Z. jujuba var. spinosa > P. sepium > grassland > bare land. The results show that Z. jujube var.spinosa is more suitable for vegetation restoration in degraded ecosystem.
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