Wang Zhaohua, Liu Kai
First Institute of Oceanography, MNR, Qingdao 266061, China.
Dongying Marine Development Research Institute, Dongying 257091, China.
Mar Pollut Bull. 2023 Dec;197:115815. doi: 10.1016/j.marpolbul.2023.115815. Epub 2023 Nov 18.
The nutrients such as dissolved inorganic nitrogen (DIN, NH-N, NO-N, and NO-N), dissolved inorganic phosphorus (DIP, PO) and dissolved SiO (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.
诸如溶解无机氮（DIN，NH-N、NO-N和NO-N）、溶解无机磷（DIP，PO）以及溶解二氧化硅（DSi）等由入海河流汇入的营养物质是导致沿海富营养化的主要因素。本研究调查了黄河三角洲典型入海河流中的营养物质输运过程。采用沿海富营养化潜力指标以及上下游站点之间的浓度比来评估不同来源对营养物质风险的影响。结果表明，城区是研究河流中营养物质的最重要来源。港口和海水养殖因其靠近沿海地区而具有更大风险。湿地是消除河流营养物质的重要转化区域，截留率可达80%。保护和建设湿地对于减少入海河流中的营养物质污染至关重要。
