Journal
JOURNAL OF COASTAL RESEARCH
Volume -, Issue -, Pages 185-193Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
DOI: 10.2112/SI93-026.1
Keywords
Red tides; dynamic response mechanisms; Beibu Gulf in Guangxi; Weizhou Island; Qiongzhou Strait
Funding
- National Natural Science Foundation of China [41576024]
- Guangxi Key Research Projects
- Guangxi Key Laboratory Project [GXKLHY15-01]
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Unlike the common outbreak mechanism of red tides, the northern Beibu Gulf in the Guangxi Zhuang Autonomous Region of China experiences frequent red tides with distinct characteristics, such as large distances from the mainland and the presence of industrial pollution. By tracing the sources and transport of the high concentrations of nitrogen and phosphorus, the relationship between pollutant transport and the dynamic response mechanisms was explored. The results showed that the concentrations of nitrogen and phosphorus nutrients in the areas of red tide outbreaks near Weizhou Island and in the Qinzhou Gulf in the northern Beibu Gulf were higher than those in the surrounding areas. However, the high concentrations of nitrogen and phosphorus nutrients in the northern Beibu Gulf did not originate from terrestrial pollution from Guangxi Province; rather, these pollutants originated on the east coast of China and were transported through the Qiongzhou Strait. The primary sources were the Pearl River Estuary and the coastal waters of eastern Guangdong. In addition, the differences in the concentration distributions of nitrogen and phosphorus nutrients between the east and west coasts of the Qinzhou Gulf in the northern Beibu Gulf were clearly related to dynamic response mechanisms.
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