Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 692, Issue -, Pages 676-690Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.07.306
Keywords
Coastal eutrophication; MARINA 1.0 model; Manure management; River pollution; Nutrients; China
Categories
Funding
- National Key Research & Development Program of China MOST project [2016YFE0103100]
- KNAW project Sustainable Resource Management for Adequate and Safe Food Provision (SURE+) [PSA-SA-E-01]
- KNAW project Sustainable pathways for nutrient use in agriculture in the Hai river basin (North China Plain) [530-5CDP27]
- Hundred Talents Program of the Chinese Academy of Sciences (CAS)
- President's International Fellowship Initiative of the Chinese Academy of Sciences [2015VEA025]
- Distinguished Young Scientists Project of Natural Science Foundation of Hebei Province [D2017503023]
- Hebei Dairy Cattle Innovation Team of Modern Agro-industry Technology Research System [HBCT20181202206]
Ask authors/readers for more resources
Eutrophication is a serious problem in Chinese seas. We explore possibilities to avoid coastal eutrophication without compromising food production in the North China Plain. We used the Model to Assess River Inputs of Nutrient to seAs (MARINA 1.0) for back-casting and scenario analysis. Avoiding coastal eutrophication by 2050 implies required reductions in river export of total nitrogen (IN) and phosphorus (TP) by 50-90% for the Hai, Huai and Huang rivers. We analyzed the potential to meet these targets in 54 scenarios assuming improvements in manure recycling, fertilizer application, animal feed and wastewater treatment. Results indicate that combining manure recycling while reducing synthetic fertilizer use are effective options to reduce nutrient inputs to seas. Without such options, direct discharge of manure are important sources of water pollution. In the 7-25 scenarios with the low eutrophication potential, 40-100% of the N and Pin untreated manure is recycled on land to replace synthetic fertilizers. Our results can support the formulation of effective environmental policies to avoid coastal eutrophication in China. (C) 2019 Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available