Restoring Soil Ecosystems and Biomass Production of Arundo donax L. under Microbial Communities-Depleted Soil

摘要: In recent years, giant reed (Arundo donax L) has received considerable attention as a promising plant for energy production. Giant is able to grow in range of environments, including wetlands and marginal soils, shown promise phytoremediation efforts. A pot experiment was carried out investigate the ability restore ecosystems different bauxite-derived red mud-amended soil pure mud (red mud—a waste generated by Bayer process aluminum industry—is strongly alkaline high salt content electrical conductivity (EC) dominated sodium). Samples were exposed temperatures, which simulate effects bushfires. Selected properties that measured included dehydrogenase, phosphatase, urease catalase activities, organic carbon, pH, EC, available macronutrients NPK, above- below-ground biomass yield. The results showed reduced EC all autoclaved soils mud-contaminated 24–82 %. Significantly, N increased, slight increase recorded K. presence enhanced soils’ enzyme activities recover tested soils; specifically, dehydrogenase activity increased 262 705 % non-autoclaved respectively, 591 385 respectively. Total bacterial fungal counts higher than after cultivating 12 weeks. Autoclaved enabled production soils. These demonstrate not only survive on lost its microbial community result heat, but can also yield significant amounts while assisting recovering