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Red River Basin - human activities and climate change

Abstract example

03/11/2016 09:42

THE DAY RIVER BASIN: IMPLEMENTATION OF THE SENEQUE/RIVERSTRAHLER MODEL
Thi Nguyet Minh LUU 1,2*,  Gilles BILLEN 1,3, Josette GARNIER 1,3, Vincent THIEU 1 and Thi Phuong Quynh LE 4
1 UPMC, University Pierre & Marie Curie, UMR 7619 Sisyphe, box 123, 4 place Jussieu, 75005 Paris, FRANCE.
2Institute of Chemistry, Vietnamese Academy of Sciences and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, VIETNAM.
3 CNRS, UMR 7619, UPMC Sisyphe Laboratory box 123, 4 place Jussieu, 75005 Paris, FRANCE.
4 Institute of Natural Product Chemistry, Vietnamese Academy of Sciences and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, VIETNAM.
E-mail:  mlle_nguyetminh@yahoo.com
ABSTRACT
The Day – Nhue Rivers basin located on the right bank of the Red River in its delta area, covers Hanoi city and its conurbation and is characterized by a high population density. Several tributaries of this river system are suffering from strong impacts of wastewater from domestic, industrial, agricultural and aquaculture activities in the regions. The Seneque/Rivertrahler model, developed for establishing the link between the biogeochemical functioning of river systems and the constraints set by the meteorology, the morphology of the drainage network and the human activities was fully implemented on the Day River basin. For taking into account regulated Red River water inputs at several stations of the Day-Nhue system, the model is connected to a previously established model of the upper Red River basin. The model results were validated using nutrient concentrations measured during several field surveys and was used to establish a nutrient budget of the drainage network. We also explore how the water flux of the upstream Red River could be managed for possibly reducing the pollution of the Day River system. Future scenarios were explored in order to evaluate the resulting changes in water quality and nutrient loading delivered to the coastal zone at the horizon 2050 based on expected demographic and land use changes. The results show that the risk for coastal eutrophication will become severe even with considerable efforts in urban wastewater treatment.
Keywords: Day River, Red River, delta, nutrient, coastal eutrophication, Seneque/Riverstrahler model
 
 
 

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