Using SWAT-LUD Model to Estimate the Influence of Water Exchange and Shallow Aquifer Denitrification on Water and Nitrate Flux

Sun, Xiaoling1,2,3; Bernard-Jannin, Leonard3,4; Grusson, Youen3,5,6; Sauvage, Sabine3; Arnold, Jeffrey7; Srinivasan, Raghavan8; Perez, Jose Miguel Sanchez3

2018-04

10.3390/w10040528

Water   影响因子和分区

2073-4441

Numerous studies have pointed out the importance of groundwater and surface water interaction (SW-GW) in a river system. However; those functions have rarely been considered in large scale hydrological models. The SWAT-LUD model has been developed based on the Soil and Water Assessment Tool (SWAT) model; and it integrates a new type of subbasin; which is called subbasin-LU (SL); to represent the floodplain area. New modules representing SW-GW exchanges and shallow aquifer denitrification are developed in the SWAT-LUD model. In this study; the SWAT-LUD model was applied to the middle floodplain area of the Garonne catchment in France. The results showed that the SWAT-LUD model could represent the SW-GW exchange and shallow aquifer denitrification appropriately. An annual 44.1 x 10(7) m(3) of water flowed into the river from the study area; but the annual exchanged water volume was 6.4 x 10(7) m(3); which represented just 1% of the river discharge. A total of 384 tons of N-NO3- (0.023 t-ha(-1)) was consumed by denitrification in the floodplain shallow aquifer annually. The nitrate concentration (N-NO3-) decrease in the channel was 0.12 mg.L-1; but in the shallow aquifer it reached 11.40 mg-L-1; 8.05 mg.L-1; and 5.41 mg.L-1 in LU1; LU2; and LU3; respectively. Our study reveals that; in the Garonne floodplain; denitrification plays a significant role in the attenuation of nitrate associated with groundwater; but the impacts of denitrification on nitrate associated with river water is much less significant.

SWAT-LUD model water exchange denitrification floodplain aquifer Garonne River

SCI ; EI

英语

第一 ; 通讯

French National Research Agency[ANR-11-CEPL-008]

Water Resources

Water Resources

WOS:000434954900182

MDPI

20181705056061

Aquifers ; Banks (bodies of water) ; Catchments ; Denitrification ; Floods ; Nitrates ; Rivers

Surface Water:444.1 ; Groundwater:444.2 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2

Web of Science

1.Southern Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
2.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China
3.UMR 5245 CNRS UPS INPT, Lab Ecol Fonct & Environm ECOLAB, ENSAT, Ave Agrobiopole BP 32607, Auzeville Tolosane, France
4.Univ Orleans, UMR 7327, ISTO, CNRS,BRGM, 1A Rue Ferollerie, F-45100 Orleans, France
5.Univ Laval, Dept Civil & Water Engn, Chaire Rech EDS Previs & Act Hydrol, Quebec City, PQ G1V 0A6, Canada
6.Swedish Univ Agr Sci, Dept Soil & Environm, Div Soil Phys, POB 7014, SE-75007 Uppsala, Sweden
7.USDA ARS, Grassland Soil & Water Res Lab, Temple, TX 76502 USA
8.Texas A&M Univ, Spatial Sci Lab, Dept Ecosyst Sci & Management, College Stn, TX 77845 USA

Sun, Xiaoling,Bernard-Jannin, Leonard,Grusson, Youen,et al. Using SWAT-LUD Model to Estimate the Influence of Water Exchange and Shallow Aquifer Denitrification on Water and Nitrate Flux[J]. Water,2018,10(4).

Sun, Xiaoling.,Bernard-Jannin, Leonard.,Grusson, Youen.,Sauvage, Sabine.,Arnold, Jeffrey.,...&Perez, Jose Miguel Sanchez.(2018).Using SWAT-LUD Model to Estimate the Influence of Water Exchange and Shallow Aquifer Denitrification on Water and Nitrate Flux.Water,10(4).

Sun, Xiaoling,et al."Using SWAT-LUD Model to Estimate the Influence of Water Exchange and Shallow Aquifer Denitrification on Water and Nitrate Flux".Water 10.4(2018).