Fig. 2 Population density difference diagrams of Stipa brevifloraat different grazing intensities and scales. Mean values (±SD ;n = 24) of density. Different lowercase letters indicate that grand means differ significantly between the grazing treatments (P < 0.05). (1) 5 cm×5 cm; (2) 10 cm×10 cm; (3) 20 cm×20 cm; (4) 25 cm×25 cm; (5) 50 cm×50 cm; (6) 100 cm×100 cm.
Effects of grazing intensity and scale on population density of