College of Geography and Tourism, Qufu Normal University, Rizhao, 276826, China; Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
Mar Pollut Bull. 2020 Jan;150:110666. doi: 10.1016/j.marpolbul.2019.110666. Epub 2019 Oct 24.
Un-restored (R) and restored (in 2006 (R) and in 2002, (R)) coastal wetlands were selected to study phosphorus (P) storage capacity and the risk of P loss in the Yellow River Delta (YRD). The results showed that the maximum P sorption capacity (Q) in the wetland sediments varied between 201.8-1168.6 mg kg; the average value was 576.2 mg kg. Q increased with increasing time since restoration (R > R > R). The eutrophication risk index (ERI) ranged between 0.27-2.07% and decreased with increasing time since restoration, but the relationship was not statistically significant (P > 0.05). A correlation analysis demonstrated that Fe, Mg, and Al are the main P sorption agents in wetland sediments, whereas TOC, pH, and clay particles have an important effect on P sorption and release. The analysis suggests that we should restore degraded coastal wetlands to help reduce the P load to offshore waters.
选择未恢复（R）和已恢复（2006 年恢复（R）和 2002 年恢复（R））的滨海湿地，以研究黄河三角洲（YRD）的磷（P）储存能力和 P 损失风险。结果表明，湿地沉积物中最大磷吸附容量（Q）在 201.8-1168.6mg/kg 之间变化；平均值为 576.2mg/kg。Q 随恢复时间的增加而增加（R>R>R）。富营养化风险指数（ERI）在 0.27-2.07%之间变化，随恢复时间的增加而降低，但无统计学意义（P>0.05）。相关性分析表明，Fe、Mg 和 Al 是湿地沉积物中磷的主要吸附剂，而 TOC、pH 和粘土颗粒对磷的吸附和释放有重要影响。分析表明，应恢复退化的滨海湿地，以帮助减少向近海海域的 P 负荷。
