Seawater-groundwater exchange and nutrients carried by submarine groundwater discharge in different types of wetlands at Jiaozhou Bay, China

Qu, Wenjing1,2,3,4; Li, Hailong3,4,5,6; Huang, Hao7; Zheng, Chunmiao5,6; Wang, Chaoyue8; Wang, Xuejing5,6; Zhang, Yan1,2,3,4

2017-12

10.1016/j.jhydrol.2017.10.014

JOURNAL OF HYDROLOGY   影响因子和分区

0022-1694

1879-2707

In Jiaozhou Bay, there are four wetland types, including sandy beaches, mud flats, tidal marshes, and estuarine intertidal zones. Four typical transects representing each of the wetland types were selected to investigate the flow dynamics, seawater-groundwater exchange and nutrients carried by submarine groundwater discharge (SGD). Based on field measurements of groundwater heads and salinity along each transect, the SGD averaged over the observation period was estimated using generalized Darcy's law. The SGD along the four transects ranges from 3.6 x 10(-3) to 7.6 cm/d with the maximum occurring at the sandy beach. The SGD rate has a good correlation with the hydraulic conductivities of the wetland sediments. There is a positive correlation between the ratio of NO3-N/DIN and SGD rates. The SGDassociated nutrient output rate ranges from 3.3 x 10(-2) to 9.5 mmol/m(2)/d for DIN (dissolved inorganic nitrogen), and from 6.2 x 10(-5) to 1.8 x 10(-2) mmol/m(2)/d for DIP (dissolved inorganic phosphorus). Compared to the nutrients delivered by the river, nutrients carried by SGD provide a more important source for the phosphate-limited environment to plankton in Jiaozhou Bay. (C) 2017 Elsevier B.V. All rights reserved.

Submarine groundwater discharge Groundwater-seawater exchange Dissolved inorganic nitrogen Dissolved inorganic phosphorous Wetlands Jiaozhou Bay

SCI ; EI

英语

通讯

Shenzhen Municipal Science and Technology Innovation Committee through project Shenzhen Key Laboratory of Soil and Groundwater Pollution Control[ZDSY20150831141712549]

Engineering ; Geology ; Water Resources

Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources

WOS:000418107600015

ELSEVIER SCIENCE BV

20174304291393

Beaches ; Coastal zones ; Discharge (fluid mechanics) ; Dissolution ; Flow of fluids ; Groundwater ; Seawater ; Submarines ; Wetlands

Coastal Engineering:407.3 ; Groundwater:444.2 ; Marine Science and Oceanography:471 ; Seawater, Tides and Waves:471.4 ; Fluid Flow, General:631.1 ; Combat Naval Vessels:672.1 ; Chemical Operations:802.3

ENGINEERING

Web of Science

1.China Univ Geosci Beijing, MOE Key Lab Groundwater Circulat & Environm Evolu, Beijing 100083, Peoples R China
2.China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China
3.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China
4.China Univ Geosci Beijing, Sch Sci Res, Beijing 100083, Peoples R China
5.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
6.Southern Univ Sci & Technol, Shenzhen Key Lab Soil & Groundwater Pollut Contro, Shenzhen 518055, Peoples R China
7.SOA, Inst Oceanog 3, 178 Daxue Rd, Xiamen 361005, Peoples R China
8.Hebei GEO Univ, Sch Water Resources & Environm, Shijiazhuang 050031, Hebei, Peoples R China

Qu, Wenjing,Li, Hailong,Huang, Hao,et al. Seawater-groundwater exchange and nutrients carried by submarine groundwater discharge in different types of wetlands at Jiaozhou Bay, China[J]. JOURNAL OF HYDROLOGY,2017,555:185-197.

Qu, Wenjing.,Li, Hailong.,Huang, Hao.,Zheng, Chunmiao.,Wang, Chaoyue.,...&Zhang, Yan.(2017).Seawater-groundwater exchange and nutrients carried by submarine groundwater discharge in different types of wetlands at Jiaozhou Bay, China.JOURNAL OF HYDROLOGY,555,185-197.

Qu, Wenjing,et al."Seawater-groundwater exchange and nutrients carried by submarine groundwater discharge in different types of wetlands at Jiaozhou Bay, China".JOURNAL OF HYDROLOGY 555(2017):185-197.