Effects of rainfall-runoff pollution on eutrophication in coastal zone: a case study in Shenzhen Bay, southern China

Xu, Hongliang1,2,5; Zhang, Ying3; Zhu, Xiuzhen4; Zheng, Mingfeng5

2019-08

10.2166/nh.2019.012

Hydrology Research   影响因子和分区

0029-1277

2224-7955

The concentration of human activities in coastal cities results in the increase of nutrient salts released into the coastal environment and is identified as a major environmental problem for coastal zone management. Large amounts of nitrogen and phosphorus are transported by rainwater-runoff from urban catchments to coastal zones during episodic rainfall events inducing eutrophication problems and increasing the risk of red tide occurrence. This study used a coupled model based on the Storm Water Management Model (SWMM) and Environment Fluid Dynamic Code (EFDC) to simulate the rainfall-runoff pollution load and its effects on eutrophication in Shenzhen Bay, southern China. A storm event of 2014 was used to build the modeling scenarios and thus analyzed the spatial-temporal variation of the rainfall-runoff pollution. The results indicated that: (i) rainfall-runoff pollution loads accounted for 60-80% of the total pollution loads, and rainfall-runoff pollution can result in a short-term impact pollution load on the receiving seawater body; (ii) the transportation of nutrient salts in the coastal zone and the nutrient salts absorbing process by algae are at different times, which suggests urban rainfall-runoff pollution has evidently an effect on variation of the concentration of chlorophyll-A in the bay, and with increasing distance to the city, the seawater body is gradually less affected by rainfall-runoff pollution.

coupled model EFDC eutrophication pollution rainfall-runoff pollution Shenzhen Bay SWMM

SCI ; EI

英语

其他

Project of Technology & Innovation Commission of Shenzhen Municipality[ZDSYS20140509094114169]

Water Resources

Water Resources

WOS:000492058600006

IWA PUBLISHING

20193107247447

Catchments ; Coastal zones ; Environmental management ; Eutrophication ; Fluid dynamics ; Nutrients ; Pollution ; Rain ; Regional planning ; Salts ; Seawater effects ; Storms ; Urban transportation ; Water management ; Water pollution

Regional Planning and Development:403.2 ; Highway Transportation:432 ; Railroad Transportation:433 ; Flood Control:442.1 ; Precipitation:443.3 ; Water Pollution:453 ; Environmental Engineering, General:454.1 ; Marine Science and Oceanography:471 ; Seawater, Tides and Waves:471.4 ; Mechanics:931.1

Web of Science

1.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China
2.Power China Water Environm Governance, Shenzhen 518012, Guangdong, Peoples R China
3.Chongqing Univ, Sch Urban Construct & Environm Engn, Chongqing 400044, Peoples R China
4.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
5.Peking Univ, Shenzhen Grad Sch, Sch Environm & Energy, Shenzhen 518055, Guangdong, Peoples R China

Xu, Hongliang,Zhang, Ying,Zhu, Xiuzhen,et al. Effects of rainfall-runoff pollution on eutrophication in coastal zone: a case study in Shenzhen Bay, southern China[J]. Hydrology Research,2019,50(4):1062-1075.

Xu, Hongliang,Zhang, Ying,Zhu, Xiuzhen,&Zheng, Mingfeng.(2019).Effects of rainfall-runoff pollution on eutrophication in coastal zone: a case study in Shenzhen Bay, southern China.Hydrology Research,50(4),1062-1075.

Xu, Hongliang,et al."Effects of rainfall-runoff pollution on eutrophication in coastal zone: a case study in Shenzhen Bay, southern China".Hydrology Research 50.4(2019):1062-1075.