A grid-based assessment of global water scarcity including virtual water trading

2006 ◽  
pp. 19-33 ◽  
Author(s):  
Md. Sirajul Islam ◽  
Taikan Oki ◽  
Shinjiro Kanae ◽  
Naota Hanasaki ◽  
Yasushi Agata ◽  
...  
Keyword(s):  
Water Scarcity ◽  
Virtual Water ◽  
Water Trading ◽  
Virtual Water Trading ◽  
Grid Based ◽  
Global Water

A grid-based assessment of global water scarcity including virtual water trading

2006 ◽  
Vol 21 (1) ◽  
pp. 19-33 ◽  
Author(s):  
Md. Sirajul Islam ◽  
Taikan Oki ◽  
Shinjiro Kanae ◽  
Naota Hanasaki ◽  
Yasushi Agata ◽  
...  
Keyword(s):  
Water Scarcity ◽  
Virtual Water ◽  
Water Trading ◽  
Virtual Water Trading ◽  
Grid Based ◽  
Global Water

Agricultural impacts on water quality and implications for virtual water trading decisions

2009 ◽  
Vol 68 (4) ◽  
pp. 1074-1082 ◽  
Author(s):  
J.M. Dabrowski ◽  
K. Murray ◽  
P.J. Ashton ◽  
J.J. Leaner
Keyword(s):  
Water Quality ◽  
Virtual Water ◽  
Agricultural Impacts ◽  
Water Trading ◽  
Trading Decisions ◽  
Virtual Water Trading

scholarly journals GLOBAL WATER RESOURCES: CHALLENGES OF THE 21st CENTURY

2020 ◽  
pp. 6-16
Author(s):  
V. Khilchevskyi
Keyword(s):  
Water Resources ◽  
Fresh Water ◽  
River Runoff ◽  
Water Scarcity ◽  
River Flow ◽  
Water Footprint ◽  
Virtual Water ◽  
Human Society ◽  
The World ◽  
Global Water

The article provides an analytical overview of the state of global water resources and their use in the world. The focus is on the most important component of water resources – freshwater, which on the planet is only 2.5 % of the total. The most accessible renewable water resources are river runoff, which is distributed unevenly on the surface of the planet: Asia (32 %), South America (28 %), North America (18 %), Africa (9 %), Europe (7%), Australia and Oceania (6 %). Along with the characteristics of the known components of freshwater resources (river runoff, groundwater, glaciers), attention is also focused on trends in attracting unconventional sources (recovered wastewater or gray water, desalinated, specially collected rainwater). The total use of fresh water in the world is only 9 % of the total river flow of the planet. At the same time, the problem of water scarcity was included in the list of the World Economic Forum 2015, as one of the global risks in terms of the potential impact on human society in the next decade. Among the causes of global water, scarcity are geographical and socio-economic. Geographical reasons are the spatial and temporal (seasonal) mismatch of the demand for fresh water and its availability. Socio-economic reasons are the growth of the world’s population, urbanization, improving living standards, changes in consumption patterns, and an increase in irrigated land. The latter has become key to the growth of global water demand. Experts forecast that the limited access to fresh water in 2050 can be felt by 3.3 billion more people than in 2000. The article gives examples of a methodology for the hydrological assessment of water scarcity (calculation of the ratio of the volume of annual renewable water resources to the population) and the methodology of economic and geographical assessment. Other approaches to assessing water resources by creating new paradigms (water – blue, green, virtual, water footprint) have been characterized. Throughout the history of mankind, there have been many conflicts related to water. Active water cooperation between countries today reduces the risk of military conflicts. This conclusion was made after studying transboundary water relations in more than 200joint river basins, covering 148 countries. The right to safe water and sanitation is a fundamental right of everyone (UN, 2010). Therefore, among the 17 sustainable development goals adopted by the UN for implementation for the period 2015-2030, Global Goal 6 “Clean Water and Good Sanitary Conditions” is aimed at ensuring sustainable management of water resources and sanitation for all. This will save people from diseases, and society will be given the opportunity to be more productive in economic terms.

Virtual water

2021 ◽  
pp. 131-150
Author(s):  
Mohammad Delpasand ◽  
Omid Bozorg-Haddad ◽  
Erfan Goharian
Keyword(s):  
Water Resources ◽  
Water Scarcity ◽  
Human Life ◽  
Virtual Water ◽  
Domestic Water ◽  
Unequal Distribution ◽  
Water Scarce ◽  
Near Future ◽  
Pressure On Water Resources ◽  
Virtual Water Trading

Abstract In many regions of the world, water scarcity has created numerous problems for the supply of domestic water use, agricultural production, and for the human life cycle in general. Perhaps in the near future water will be synonymous with gold. Over the past two decades, the virtual water concept has become known as a mitigating water scarcity crisis solution which can balance the unequal distribution of world water resources. Virtual water is the amount of water that a product consumes in a production process from start to end. Developers of the virtual water idea believe that by exporting and importing commodities, large volumes of water can be traded which is referred to as virtual water trading. In the theory of virtual water trade, in order to reduce the pressure on water resources, it is recommended that water-scarce countries import products instead of producing them from internal water sources and allocate these water resources for other lucrative business activities. Therefore, in this chapter, the virtual water concept and its specifications and evaluations are fully explained.

The impact of water scarcity on Chinese inter-provincial virtual water trade

2021 ◽  
Author(s):  
Jie Deng ◽  
Cai Li ◽  
Ling Wang ◽  
Shuxia Yu ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Water Scarcity ◽  
Virtual Water ◽  
Virtual Water Trade ◽  
The Impact

scholarly journals Virtual versus real water transfers within China

2005 ◽  
Vol 361 (1469) ◽  
pp. 835-842 ◽  
Author(s):  
Jing Ma ◽  
Arjen Y Hoekstra ◽  
Hao Wang ◽  
Ashok K Chapagain ◽  
Dangxian Wang
Keyword(s):  
South China ◽  
Water Scarcity ◽  
North China ◽  
Virtual Water ◽  
Water Transfer ◽  
Qualitative Description ◽  
The North ◽  
Food Deficit ◽  
Virtual Water Flow ◽  
North Water

North China faces severe water scarcity—more than 40% of the annual renewable water resources are abstracted for human use. Nevertheless, nearly 10% of the water used in agriculture is employed in producing food exported to south China. To compensate for this ‘virtual water flow’ and to reduce water scarcity in the north, the huge south–north Water Transfer Project is currently being implemented. This paradox—the transfer of huge volumes of water from the water-rich south to the water-poor north versus transfer of substantial volumes of food from the food-sufficient north to the food-deficit south—is receiving increased attention, but the research in this field has not yet reached further than rough estimation and qualitative description. The aim of this paper is to review and quantify the volumes of virtual water flows between the regions in China and to put them in the context of water availability per region. The analysis shows that north China annually exports about 52 billion m 3 of water in virtual form to south China, which is more than the maximum proposed water transfer volume along the three routes of the Water Transfer Project from south to north.

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