River pollution alert: Duliujianhe River contaminated with high levels of nutrients!
The study looked at the levels of nitrogen, phosphorus, and organic matter in the sediment of Duliujianhe River. The researchers found that these substances increased, then decreased, then increased again along the river. They also discovered that nitrogen and organic matter may come from the same sources, and there is a connection between nitrogen and phosphorus. The upper and middle parts of the river were more polluted than the downstream area, with organic materials and nitrogen being the main pollutants.
