Evaluation of Pollution Source of the Bays in Fujian Province

Based on investigation data of pollution sources of seven bays in Fujian province (Luoyuan Bay, Quanzhou Bay, Xiamen Bay, Sansha Bay, Xinghua Bay, Meizhou Bay and Dongshan Bay), the pollutant source composition, total amount and distribution character of pollution sources are evaluated in this article. The result shows that: Pollution Sources of the Bays in Fujian province are mainly land-based pollution. Agricultural pollution source makes up the largest percentage of the land-based pollution sources, followed by domestic pollution source and soil erosion while industrial pollution source makes up the smallest percentage. Sea-based pollution sources come mainly from aquaculture pollution while vessel-source makes up only a very small percentage. Among the seven bays, Meizhou Bay has the largest amount of COD discharged into sea and Dongshan Bay the smallest; Xinghua Bay has the largest amount of TN, TP and Luoyuan Bay the smallest. The concept of pollutant load per unit tidal prism is introduced to evaluate the pollution pressure of each bay. The research can be a scientific support of the total amount control of pollution discharged into bay and promote the socioeconomic sustainable development in Fujian coastal area.