Impact of coastal industrialization and urbanization on marine phosphorus cycle: Insights from Daya Bay and Zhelin Bay
文献类型： 外文期刊
作者： Gu, Yang-Guang 1 ; Wang, Ya-Su 2 ; Jordan, Richard W. 3 ; Gao, Yan-Peng 8 ; Huang, Hong-Hui 1 ; Jiang, Shi-Jun 2 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
2.Hainan Univ, State Key Lab Marine Resource Utilizat South China, Haikou 570228, Peoples R China
3.Yamagata Univ, Fac Sci, Yamagata 9908560, Japan
4.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
5.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China
6.Minist Agr & Rural Affairs, Key Lab Open Sea Fishery Dev, Guangzhou 510300, Peoples R China
7.Sanya Trop Fisheries Res Inst, Sanya 572025, Peoples R China
8.Guangdong Univ Technol, Inst Environm Hlth & Pollut Control, Guangzhou 510006, Peoples R China
关键词： Dissolved reactive phosphorus; Coastal ecosystems; Sediment dynamics; Sulfur compounds; Urbanization effects
期刊名称：GONDWANA RESEARCH （ 影响因子：8.6； 五年影响因子：7.1 ）
ISSN： 1342-937X
年卷期： 2025 年 140 卷
页码：
收录情况： SCI
摘要： Coastal sediments serve as an important sink for phosphorus from terrestrial sources, yet the impact of coastal industrialization and urbanization on marine phosphorus cycling remains poorly understood. This study employs the Dual-Mode Diffusive Gradients in Thin Films (DGT) technique to investigate the interplay between dissolved reactive phosphorus (DRP), dissolved sulfide (S2- ), and iron (Fe2+) in surface sediments of Zhelin Bay and Daya Bay. Notably, Zhelin Bay, influenced by agricultural activities, displays significantly elevated Fe2+ (358.64 mu g/L) and DRP (38.84 mu g/L) levels, compared to the more industrially and urbanization-impacted Daya Bay, which has lower averages (Fe2+: 17.24 mu g/L; DRP: 22.67 mu g/L). Our analysis reveals strong linear correlations between Fe2+, S2- , and DRP, indicating that these dissolved species predominantly regulate DRP levels. These findings underscore the profound effects of coastal industrialization and urbanization on marine phosphorus dynamics, providing essential insights for the management and restoration of coastal ecosystems.
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