文献类型：期刊文献

英文题名：Environmental capacity and fluxes of land-sourced pollutants around the Leizhou Peninsula in the summer

作者：Chen, Ying[1,2,3];Sun, Yan[1,4];Shi, Haiyi[1,2,3];Zhao, Hui[1,2,3,5];Gao, Hui[1,2,3,5];Pan, Gang[1,2,6,7];Tian, Kai[1,2,3]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang, Peoples R China;[2]Guangdong Ocean Univ, Cooperat Res Ctr Nearshore Marine Environm Change, Zhanjiang, Peoples R China;[3]Guangdong Ocean Univ, Res Ctr Coastal Environm Protect & Ecol Resilience, Zhanjiang, Peoples R China;[4]Guangdong Ocean Univ, Coll Elect & Informat Engn, Zhanjiang, Peoples R China;[5]Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China;[6]York St John Univ, Sch Humanities, York, England;[7]Jiangsu Jiuguan Inst Environm & Resources, Yixing, Peoples R China

年份：2023

卷号：10

外文期刊名：FRONTIERS IN MARINE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001097615900001)、、Scopus(收录号：2-s2.0-85176209606)、WOS

基金：The author(s) declare financial support was received for the research, authorship, and/or publication of this article. The present research is supported by the National Natural Science Foundation of China (No. 42076162) and the project was supported by the Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (No. 311020004).

语种：英文

外文关键词：Leizhou Peninsula; Zhanjiang Bay; land-sourced pollutants; Delft 3D; environmental capacity

外文摘要：Although the water environment has certain self-purification capability, the natural balance is disrupted, leading to water quality deterioration when the discharge load of wastewater exceeds a certain threshold. This problem implies the urgency of evaluating marine environmental capacity as a necessary parameter for marine sustainable development of marine ecosystems. Through principal component analysis (PCA), clustering, and other methods, we analyzed the average concentration and fluxes of land-sourced pollutants and determined the pollution level around the Leizhou Peninsula. Combined with the Delft3D hydrodynamic numerical model, tidal hydrodynamic forces and pollutants migration and diffusion were calculated. Based on in-situ measured data, the model was validated. The sharing rate method was used to calculate the marine environmental capacity in Zhanjiang Bay and analyzed their impact on seawater eutrophication. The results showed that: (1) The average concentrations of chemical oxygen demand (COD), ammonia nitrogen (NH4+), total nitrogen (TN), and total phosphorus (TP) around Leizhou Peninsula were 22.56 mg/L, 0.69 mg/L, 6.69 mg/L, and 0.69 mg/L, respectively. (2) Six areas (Area A-F) can be divided into, based on the discharge of land-sourced pollutants into the sea area. According to the results of PCA, clustering, and other methods, the average concentration and fluxes of land-sourced pollutants in Area B (i.e. Zhanjiang Bay) were very high. (3) The environmental capacity of Zhanjiang Bay was calculated through Delft3D numerical simulation, and it was found that the COD and TN environmental capacity of 6 sewage outlets exceeded the standard, while the TP environmental capacity of 3 sewage outlets exceeded the standard. (4) According to the statistical research result, most of the Zhanjiang Bay waters has been restricted by nitrogen for over a decade. Therefore, we speculate that although TN environmental capacity exceeds the standard, its impact on eutrophication in Zhanjiang Bay is still limited to a certain extent.