河口区重金属运动足迹

doi:10.11988/ckyyb.20190223

院报 ›› 2020, Vol. 37 ›› Issue (6): 34-42.DOI: 10.11988/ckyyb.20190223

河口区重金属运动足迹

张晶晶^1,2, 羊瑞³, 王华^1,2, 周丰年⁴, 闫怀宇^1,2, 李保⁴

1.河海大学环境学院,南京 210098;
2.河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京 210098;
3.中交上海航道勘察设计研究院有限公司,上海 200135;
4.长江水利委员会水文局长江口水文水资源勘测局,上海 200136

收稿日期:2019-03-05 出版日期:2020-06-01 发布日期:2020-06-21
作者简介:张晶晶(1997-),女,安徽宣城人,硕士研究生,研究方向为湖泊水污染控制。E-mail:15298384205@163.com
基金资助:
开放基金项目(CKWV2017504/KY)

Heavy Metal Movement Footprint in Estuary Area

ZHANG Jing-jing^1,2, YANG Rui³, WANG Hua^1,2, ZHOU Feng-nian⁴, YAN Huai-yu^1,2, LI Bao⁴

1. College of Environmental, Hohai University, Nanjing 210098, China;
2. Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Water Resources, Hohai University, Nanjing 210098, China;
3. CCCC Shanghai Waterway Survey and Design Institute Co. , Ltd. , Shanghai 200135, China;
4. Bureau of Hydrology and Water Resources Survey in the Yangtze Estuary, Bureau of Hydrology of Changjiang Water Conservancy Commission, Shanghai 200136, China

Received:2019-03-05 Online:2020-06-01 Published:2020-06-21

摘要/Abstract

摘要： 为了更好地研究河口区重金属的运动足迹,综合评估其对河口水源区的影响,进一步实现河口水污染精准防治,选择长江口为研究区域,根据2016年1—12月长江口6个断面的监测数据,分析了长江口枯水期典型月(1月份)、平水期典型月(5月份)、丰水期典型月(8月份)重金属的运动足迹规律,构建了二维非稳态水环境数学模型并进行了率定验证,探究了河口区重金属的时空分布。研究结果表明:①不同水文期,长江口重金属受到长江径流和潮汐作用的影响,粒子运动速度从大到小的时间排序是丰水期>平水期>枯水期;空间分布来看,徐六泾释放的粒子会进入长江口的3个水源区。②枯水期典型月(1月份),粒子运动足迹3处不一致,北港处重金属粒子运动速度最快,为4.98 km/d,最终汇入东海。③平水期典型月(5月份),徐六泾重金属粒子足迹运动不同于枯水期,沿北港方向流动,继而呈顺时针的螺旋型轨迹运动,最终流入东海,且运动速度最快,为7.03 km/d。④丰水期典型月(8月份),运动足迹与平水期类似,但徐六泾与北港处的粒子运动速度都大于平水期,北港处最大,为8.32 km/d。

关键词: 河口, 长江口, 重金属, 粒子追踪, 时空分布

Abstract: In the purpose of precise prevention and control of water pollution in river estuary, the movement footprint of heavy metals in the Yangtze River estuary was studied in this paper to comprehensively evaluate the influence of heavy metals on water sources in the estuary. According to the monitoring data at six sections of the Yangtze River Estuary from January to December 2016, the footprints of heavy metals in typical month (January) in dry season, typical month (May) in flat season, and typical month (August) in wet season were analyzed. The mathematical models of two-dimensional unsteady water environment were established and verified. The temporal and spatial distribution of heavy metals in the estuary was investigated. The results are as follows: (1) In different hydrological periods, the heavy metals in the Yangtze River estuary are affected by the runoff and tidal action of the Yangtze River. Particle motion speed in wet season is larger than that in flat season and dry season in sequence. In terms of spatial distribution, the particles released at Xuliujing enters three water source areas of the Yangtze River estuary. (2) In typical month (January) of dry season, the particle motion footprint is inconsistent. The motion speed of heavy metal particles at Beigang (the north port) is the fastest, 4.98 km/d, and finally reaches the East Sea. (3) In typical month (May) of flat season, the motion footprint of heavy metal particles at Xuliujing witnesses a largest speed 7.03 km/d, which differs from that in dry season, but flows along Beigang, and then spirals in a clockwise direction, eventually flowing into the East Sea. (4) In typical month (August) of wet season, the footprint of heavy metal is similar to that in flat season, but at Xuliujing and Beigang the motion speeds of particles are larger than those in flat water period, with the maximum speed amounting to 8.32 km/d at Beigang.

Key words: estuary, Yangtze River estuary, heavy metal, particle tracing, space-time distribution

中图分类号:

X522

张晶晶, 羊瑞, 王华, 周丰年, 闫怀宇, 李保. 河口区重金属运动足迹[J]. 院报, 2020, 37(6): 34-42.

ZHANG Jing-jing, YANG Rui, WANG Hua, ZHOU Feng-nian, YAN Huai-yu, LI Bao. Heavy Metal Movement Footprint in Estuary Area[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2020, 37(6): 34-42.

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河口区重金属运动足迹

Heavy Metal Movement Footprint in Estuary Area

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