Past and future trends in grey water footprints of anthropogenic nitrogen and phosphorus inputs to major world rivers

2012 ◽  
Vol 18 ◽  
pp. 42-49 ◽  
Author(s):  
Cheng Liu ◽  
Carolien Kroeze ◽  
Arjen Y. Hoekstra ◽  
Winnie Gerbens-Leenes
Keyword(s):  
Future Trends ◽  
Nitrogen And Phosphorus ◽  
Grey Water ◽  
Anthropogenic Nitrogen ◽  
World Rivers

scholarly journals Anthropogenic nitrogen autotrophy and heterotrophy of the world's watersheds: Past, present, and future trends

2010 ◽  
Vol 24 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Gilles Billen ◽  
Arthur Beusen ◽  
Lex Bouwman ◽  
Josette Garnier
Keyword(s):  
Future Trends ◽  
Anthropogenic Nitrogen

scholarly journals Changes in anthropogenic nitrogen and phosphorus inputs to the St. Lawrence sub-basin over 110 years and impacts on riverine export

2016 ◽  
Vol 30 (7) ◽  
pp. 1000-1014 ◽  
Author(s):  
Jean-Olivier Goyette ◽  
Elena M. Bennett ◽  
Robert W. Howarth ◽  
Roxane Maranger
Keyword(s):  
Nitrogen And Phosphorus ◽  
Anthropogenic Nitrogen ◽  
Riverine Export

Rationale for Control of Anthropogenic Nitrogen and Phosphorus to Reduce Eutrophication of Inland Waters

2011 ◽  
Vol 45 (24) ◽  
pp. 10300-10305 ◽  
Author(s):  
William M. Lewis ◽  
Wayne A. Wurtsbaugh ◽  
Hans W. Paerl
Keyword(s):  
Inland Waters ◽  
Nitrogen And Phosphorus ◽  
Anthropogenic Nitrogen

scholarly journals Virtual nitrogen and phosphorus flow associated with interprovincial crop trade and its effect on grey water stress in China

2021 ◽  
Author(s):  
Dandan Ren ◽  
Wenfeng Liu ◽  
Hong Yang ◽  
La Zhuo ◽  
Yindong Tong ◽  
...  
Keyword(s):  
Water Stress ◽  
Water Footprint ◽  
Southern China ◽  
National Level ◽  
Northern China ◽  
Nitrogen And Phosphorus ◽  
Grey Water ◽  
P Loss ◽  
The North ◽  
The Impact

Abstract The grey water footprint (GWF) is defined as freshwater requirements for diluting pollutants in receiving water bodies. It is widely used to measure the impact of pollutant loads on water resources. GWF can be transferred from one area to another through trade. Although pollution flow has previously been investigated at the national level, there has been no explicit study on the extent to which crop trade affects GWF across regions and the associated changes in grey water stress (GWS). This study analyzes pollution flow associated with interprovincial crop trade based on nitrogen (N) and phosphorus (P) loss intensity of three major crops, namely, maize, rice and wheat, which is simulated by a grid-based crop model for the period 2008–2012, and evaluates the spatial patterns of GWS across China. The results indicate that the integrated national GWF for N and P was 1,271 billion m3 yr-1, with maize, rice, and wheat contributing 39%, 37%, and 24%, respectively. Through interprovincial crop trade, southern China outsourced substantial N and P losses to the north, leading to a 30% GWS increase in northern China and 66% GWS mitigation in southern China. Specifically, Jilin, Henan, and Heilongjiang Provinces in the north showed increases in GWS by 161%, 114%, and 55%, respectively, while Fujian, Shanghai, and Zhejiang in the south had GWS reductions of 83%, 85%, and 80%, respectively. It was found that the interprovincial crop trade led to reduced national GWF and GWS. Insights into GWF and GWS can form the basis for policy developments on N and P pollution mitigation across regions in China.

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