ABSTRACT
A total of 15 dredged sediments’ samples from Taihu Lake were obtained and tested. The nutrient and heavy-metal pollution characteristics were analyzed. Geoaccumulation index (Igeo ) was applied for the assessment of heavy-metal pollution in dredged sediments. The research results showed that the pH, organic matter, and available P of dredged sediment from Taihu Lake were 7.28, 25.8%, and 8.41 ppm and 89.97 ppm, respectively, which were moderately suitable for plant’s growth; the available N and K contents were 16.96 ppm and −20.11 ppm, which were too low for planting, so extra sources of nitrogen and potassium should be added into the sediment in order to meet the requirements for plant’s growth while recycling. Based on the Igeo of target of heavy metals, the sediment collected from the study area can be approximately categorized as unpolluted with Zn, Pb, and Cu, and moderately polluted with Cd.
