Biological soil crusts(biocrusts) were extensively recovered on the surface of revegetated lands after the implementation of the "Grain for Green" Project, which is a program for retransforming croplands on steep slopes(≥ 25°) into grasslands and shrublands in order to restore ecosystem functions in the Loess Plateau region. The distribution patterns and spatial variability of biocrusts and vascular plants in the revegetated lands in this region have rarely been considered in previous studies. The coverage, patch size, and number of vascular plants as well as biocrust cover and composition were investigated in six successive rainfall zones ranging from 250 mm to 550 mm in the Loess Plateau region so as to determine the distribution patterns and their spatial variation. The following observations were made from the results:1) Revegetated lands showed a mosaic pattern of vascular plants and biocrusts across the rainfall gradient. Biocrusts were mostly distributed continuously within each site, while vascular plants often existed in patchy mosaics. 2) Biocrust coverage in different rainfall zones in the region ranged between 55.1% and 80.8%. The average biocrust coverage in the 250-350 mm rainfall zone was 77.8%, which was significantly higher than that in the 350-500 mm rainfall zone(60.3%). However, no significant difference was observed in the community composition of biocrust along this gradient. 3) Vascular plant coverage in the region ranged from 10.0% to 58.7%. An obvious and significant increasing trend was observed in the coverage along with the increase of annual mean precipitation. 4) Total and average basal patch area of vascular plants also increased along with annual mean precipitation, while the number of individual plants decreased. Given this general trend, the smallest plants(basal radii < 0.1 cm) dominated the plant patch-size distributions in all the rainfall zones. These results reveal the intercorrelation of spatial pattern and distribution of biocrusts and vascular vegetation across environmental gradients in the Loess Plateau region.