CLONAL INTEGRATION MODIFIES RESPONSES OF HEDYSARUM LAEVE TO LOCAL SAND BURIAL IN MU US SANDLAND Response of biomass allocation to small-scale variation of vegetation coverage in dominant clonal semi-shrubs in the Mu Us Sandland Responses of desert soil factors and dark septate endophytes colonization to clonal plants invasion Spatial pattern of sandy vegetation and two dominant clonal semi-shrubs in the Ordos Plateau Genetic Diversity and Clonal Structure of Hedysarum laeve in Mo Us Sandland Effects of Site Condition on Growth and Spatial Variations of Hedysarum Laeve The clonal integration of photosynthates in the rhizomatous half-shrub Hedysarum laeve Relation of Wind-induced Sand Displacement to Plant Biomass and Plant Sand-binding Capacity Genet Characters of Hedysarum Laeve and the Characters of Its Ramet Population in Different Habitation Mu Us Sandland Effect of ultra-dry treatment on seed storage of Hedysarum laeve Effects of coal dust deposition on seedling growth of Hedysarum laeve Maxim., a dominant plant species on Ordos Plateau