文献类型：期刊文献

英文题名：Distribution Characteristics of Dissolved Oxygen in Spring in the Northern Coastal Beibu Gulf, a Typical Subtropical Bay

作者：Zheng, Qiwen[1,2,3];Zhao, Hui[1,2,3];Shi, Yuzhen[1];Duan, Meina[1]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519082, Peoples R China;[3]Guangdong Ocean Univ, Cooperat Res Ctr Offshore Marine Environm Change, Zhanjiang 524088, Peoples R China

年份：2023

卷号：15

期号：5

外文期刊名：WATER

收录：SCI-EXPANDED(收录号：WOS:000947685900001)、、EI(收录号：20231113731538)、Scopus(收录号：2-s2.0-85149856355)、WOS

基金：The present research is supported by the National Natural Science Foundation of China (No. 42076162), Innovation Training Program for college students of Guangdong Ocean University (NO. CXXL2020287) 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：beibu gulf; dissolved oxygen; biochemical processes; agglomerative hierarchical cluster analysis

外文摘要：Dissolved oxygen (DO) is an important parameter for evaluating the seawater quality of the oce-anic environment, but the distribution of DO and its possible mechanisms of marine environ-mental regulation are less studied. Here, the spatial distribution of DO and the influence of main environmental factors on DO were explored using in-situ observation data collected in the northern coastal waters of the Beibu Gulf in April 2021, based on cluster analysis, partial correla-tion analysis, and multiple linear regression. The results showed that DO in surface water of the study area gradually increased from nearshore to offshore, with the nearshore's DO being nearly saturated and the offshore supersaturated. Tieshan Port and the Maowei Sea had the lowest degree of DO saturation. The partial correlation analysis between DO concentration and environmental factors revealed that the distribution of DO concentration was mainly influenced by temperature and salinity as well as other biochemical factors (i.e., chlorophyll-a, turbidity, and pH). Significant differences existed between the dominant factors in various parts of the northern Beibu Gulf. The western river (Beilun River, Fangcheng River, Maoling River, Qinjiang River) estuaries and offshore areas were dominated by photosynthesis, while the eastern river (Fengfeng River, Nanliu River) estuaries were dominated by oxidation-decomposition. In addition, DO was also affected by the mangrove ecosystem, aquaculture, and coastal industry.