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

第一作者： Gu, Yang-Guang

作者： Gu, Yang-Guang;Huang, Hong-Hui;Wang, Ya-Su;Jiang, Shi-Jun;Jordan, Richard W.;Gu, Yang-Guang;Jiang, Shi-Jun;Gu, Yang-Guang;Huang, Hong-Hui;Gu, Yang-Guang;Gu, Yang-Guang;Gao, Yan-Peng

作者机构：

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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