Abstract
Abstract: In order to understand more about the relationship between vascular plants and crusts after the biological sand fixation project, the vascular plants, composition, coverage and composition changes of crusts in artificial sand fixation vegetation area in Shapotou are studied by quadrat survey method. It is found that the height and coverage of shrubs will decrease with the increase of years after the sand fixation project until reaching a balanced state. The number and height of herbaceous plants will increase in the same period of time, and the thickness of crusts will also increase continuously. According to the water storage property of crusts, when the number of years increases, the thicker the crusts are, the more shrubs will be provided with growth conditions. In addition, shrub roots directly affect biological sand fixation ability, so this paper studies the ecological relationship between vascular plants and crusts after the desert sand fixation project, providing reference for more effective sand fixation work.