Analysis of the Total Nitrogen Distribution Characteristics and Land‐Based Correlation in the Sea Areas Under the Jurisdiction of Weifang City in 2022

ABSTRACT The nitrogen distribution in Weifang was examined using measured data from August 2022 to investigate the distribution features of nitrogen in the Weifang Sea region and its relationship with land‐based rivers. The findings indicate that nitrogen levels in Weifang are higher during the August flood season, and water quality varies by location. Land‐based pollution usually affects the water quality, with lower amounts of nitrogen seen in the open sea and rather steady levels in other places. The distribution of nitrogen across different coastal regions is influenced by nearby rivers, with higher concentrations observed in the Mi River and Xiaoqing River. This leads to the most severe nitrogen exceedances in the sea area near Weifang Port. Based on these findings, strategies for targeted actions, improved land and sea management, and heightened environmental awareness are recommended. The research results enhance the understanding of water quality distribution in Weifang waters and provide valuable data for controlling nitrogen pollution and improving environmental management in the region.