Dominant Contribution of a Lake's Internal Pollution to Eutrophication During Rapid Urbanization

In this study, a lake that had been formed during ten years of urbanization had become hyper-eutrophic. TP mainly contributed to the eutrophication and algal bloom in the lake. While the release potential of TP fluctuated, TN, particularly NH3-N, was constantly released from the sediment. Concentrations of anthropogenic metals (Pb, Cu and Cr) increased with the increasing depth of the sediment. Even for a lake that had formed rapidly in a short period, the internal phosphorus released from sediment was 1.9-times higher than that of the external discharge. The dominating contribution of internal pollution from sediment requires more attention to restore and manage these urban waters.PMID:33877374 | DOI:10.1007/s00128-021-03236-1

Source: Bulletin of Environmental Contamination and Toxicology - April 20, 2021 Category: Environmental Health Authors: Xiaolei Zheng Gaoxiang Liu Wei Yang Xinxin Peng Huazu Liu Hong Li Wei Li Source Type: research