Nutrients transport behavior in inlet river in the Yellow River Delta in winter

Zhaohua Wang; Kai Liu

doi:10.1016/j.marpolbul.2023.115815

Nutrients transport behavior in inlet river in the Yellow River Delta in winter

Mar Pollut Bull. 2023 Dec:197:115815. doi: 10.1016/j.marpolbul.2023.115815. Epub 2023 Nov 18.

Authors

Zhaohua Wang¹, Kai Liu²

Affiliations

¹ First Institute of Oceanography, MNR, Qingdao 266061, China.
² Dongying Marine Development Research Institute, Dongying 257091, China. Electronic address: kliu@yic.ac.cn.

PMID: 37984090
DOI: 10.1016/j.marpolbul.2023.115815

Abstract

The nutrients such as dissolved inorganic nitrogen (DIN, NH₄⁺-N, NO₂^--N, and NO₃^--N), dissolved inorganic phosphorus (DIP, PO₄^3-) and dissolved SiO₂ (DSi) funneled by the inlet river are the dominant factors to coastal eutrophication. This study investigated nutrient transport process in typical inlet rivers in the Yellow River Delta. The indicator of coastal eutrophication potential and concentration ratio between upstream and downstream stations were used to evaluate the influence of different sources to the nutrient risks. It showed that urban areas are the most important source of the nutrients in studied rivers. The harbor and mariculture would have greater risk because of their proximity close to the coastal area. Wetland was a vital conversion to eliminate the river nutrients, and the retention could reach 80 %. It is imperative to protect and construct wetlands to reduce the nutrient pollution in the inlet river.

Keywords: Coastal; Coastal eutrophication; Inlet river; Nutrients; Retention; Wetlands.

MeSH terms

Bays
China
Environmental Monitoring
Eutrophication
Nitrogen / analysis
Nutrients
Phosphorus / analysis
Silicon Dioxide
Water Pollutants, Chemical* / analysis

Substances

Water Pollutants, Chemical
Silicon Dioxide
Nitrogen
Phosphorus