欢迎访问《渔业研究》官方网站,今天是 分享到:

渔业研究 ›› 2021, Vol. 43 ›› Issue (6): 549-561.DOI: 10.14012/j.cnki.fjsc.2021.06.001

• 论文与报告 • 上一篇    下一篇

闽江口水环境主要理化因子时空分布特征研究

林建杰   

  1. 福州市海洋与渔业技术中心,福建 福州 350026
  • 收稿日期:2021-09-06 修回日期:2021-10-12 出版日期:2021-12-27 发布日期:2021-12-20
  • 通讯作者: 林建杰
  • 作者简介:林建杰(1980-),男,高级工程师,本科,主要从事海洋环境监测、渔业资源管理.E-mail:wllw221@sina.com
  • 基金资助:
    国家自然科学基金项目(41376050)

Spatial and temporal distribution characteristics of main physicochemical factors in Min River estuary

LIN Jianjie   

  1. Fuzhou Marine and Fisheries Technology Center,Fuzhou 350026,China
  • Received:2021-09-06 Revised:2021-10-12 Online:2021-12-27 Published:2021-12-20
  • Contact: Jian-jie LIN

摘要: 对闽江口海域春秋两季的水质进行调查,应用主成分分析法(PCA)进行统计,以研究水质状况、10个水质理化因子的时空分布特征以及闽江径流陆源入海污染物情况。结果表明:1)无机氮(DIN)全部超标,化学需氧量(COD)和活性磷酸盐(PO43--P)存在不同程度超标,但多年数据显示DIN污染情况逐渐好转;2)COD、DIN等在空间上呈现出以琅岐岛为中心向外海逐渐递减,PO43--P分布特征相反,时间上表现为春季水质略差于秋季的分布特征;3)溶解氧(DO)、亚硝酸盐(NO2--N)、铵盐(NH4+-N)和PO43--P是海域水质污染的主要驱动因子,其中,悬浮物(SS)、硝酸盐(NO3--N)、NO2--N、NH4+-N主要来自闽江径流输入,并成为闽江口海域主要污染源。

关键词: 闽江口, 水环境, 主成分分析法, 时空分布

Abstract: According to the water quality investigation and evaluation results of Min River estuary in spring and autumn, the principal component analysis (PCA) was used to analyze the water quality status and the temporal and spatial distribution characteristics of 10 water quality physical and chemical factors, as well as the land-based pollutants in the runoff of Min River estuary. The results showed that: 1) DIN exceeded the standard, COD and PO43--P exceeded the standard in varying degrees. It was found that DIN pollution was gradually improving through the comparison of data for many years. 2) COD and DIN were gradually decreasing outward with Langqi Island as the center, and the distribution characteristics of PO43--P were opposite. The water quality in spring was slightly worse than that in autumn. 3) DO,NO2--N,NH4+-N and PO43--P were the driving factors of water pollution in the sea area. Among them, SS, NO3--N, NO2--N and NH4+-N mainly came from the runoff input of Min River and became the main pollution source in the sea area of Min River estuary.

Key words: Min River estuary, water environment, principal component analysis, spatial-temporal distribution

中图分类号: