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| 基于PCA法的沉积物质量评价模型构建及其应用 |
| 姜双城,林培梅,蔡建堤,颜聪毅,陈宇峰,吴建绍,陈思源,汪新,林琪 |
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| (福建省水产研究所、福建省海洋生物增养殖与高值化利用重点实验室，福建 厦门 361013;厦门市第五中学，福建 厦门 361004) |
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| 摘要: |
| 本研究针对我国沉积物质量评价存在的问题，基于近海沉积物监测常规指标和海洋沉积物质量标准，结合主成分分析法（PCA）构建了沉积物质量的评价指标体系和数学模型，划分出三类沉积物质量综合指数（F）的量化区间值，并在九龙江及毗邻海域进行了示范应用。模型结果显示九龙江口沉积物质量以二类为主，具有面源和点源的复合污染特征，关键区域为漳州近岸海域；单因子评价结果表明主要污染指标为Zn、Cu和Pb。评价结果较好地反应了沉积物环境质量现状，为九龙江口底质保护和治理提供了技术支撑。 |
| 关键词: 海洋化学 沉积物 质量评价 模型 九龙江口 |
| DOI：10.3969/J.ISSN.2095-4972.2020.04.006 |
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| 基金项目:福建省科技厅公益专项资助项目(2015R1003-12)；福建省海洋与渔业结构调整专项资助项目（2020HYJG05）；福建省海洋发展补助资金资助项目（ZHHY-2019-4，FJHJF-L-2020-8）；国家海洋局海洋公益性行业科研专项资助项目(201505034-4) |
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| Establishment and application of sediment quality assessment model based on PCA method |
| JIANG Shuang-cheng,LIN Pei-mei,CAI Jian-di,YAN Cong-yi,CHEN Yu-feng,WU Jian-shao,CHEN Si-yuan,WANG Xin,LIN Qi |
| (Fisheries Research Institute of Fujian; Key Laboratory of Cultivation and Highvalue Utilization of Marine Organisms in Fujian Province, Xiamen 361013, China;Xiamen Fifth Middle School， Xiamen 361004, China) |
| Abstract: |
| In view of the existing problems in sediment quality evaluation in China, based on the conventional monitoring indicators of coastal sediments in China and the standard of Marine Sediment Quality, the PCA was used to construct the evaluation index system and mathematical model of sediment quality. And the quantitative interval values of the three types of sediment quality comprehensive index F were divided. Then, the model was used in Jiulong Estuary and adjacent waters. The results showed that the sediment quality of Jiulong Estuary was mainly of class II assessed by the Marine Sediment Quality and characteristied by the pollution of both non point source and point source and its key area was in the coastal waters of Zhangzhou. The results of single factor evaluation indicated that the main pollution indexes were Zn, Cu and Pb. The evaluation results reflect well the current situation of sediment quality and provide technical support for protection and management in Jiulong Estuary. |
| Key words: marine chemistry sediments quality evaluation model Jiulong Estuary |