Spatial distribution of the yield biomass of switchgrass on the marginal land of the Loess plateau

 Figures 7. The spatial distribution of switchgrass biomass yield on the available marginal land of the Loess Plateau. (a) upland switchgrass in marginal land use scenario 1; (b) upland switchgrass marginal in land use scenario 2; (c) lowland switchgrass marginal in land use scenario 1; (d) lowland switchgrass marginal in land use scenario2; (e) optimal switchgrass marginal in land use scenario 1; (f) optimal switchgrass marginal in land use scenario 2.