Phosphorous is a key nutritious element that affects waterbody eutrophication. Phosphorus redistribution in plant-overlay water-sediment system with different hydrophytes has been studied. Results showed that phosphorous absorbed by Lemna minor and Spirodela polyrhiza came from overlay water, while phosphorous absorbed by Hydrilla verticilata and Alternanthera philoxeroides came mainly from sediment. Phosphate bacteria in sediment accelerates phosphorous release into overlay water, resulting in the reduction of phosphorus content in the sediment. In different hydrophytes environment, there are different amount of the microbial biomass and phosphate bacteria. Phosphorus content in the sediment is right opposite to the amount of phosphate bacteria.
phosphorus contentphosphate bacteriamicrobial biomassphosphorus distribution
NETL
NSTL
万方数据
维普
