Document Detail


Global land and water grabbing.
MedLine Citation:
PMID:  23284174     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Societal pressure on the global land and freshwater resources is increasing as a result of the rising food demand by the growing human population, dietary changes, and the enhancement of biofuel production induced by the rising oil prices and recent changes in United States and European Union bioethanol policies. Many countries and corporations have started to acquire relatively inexpensive and productive agricultural land located in foreign countries, as evidenced by the dramatic increase in the number of transnational land deals between 2005 and 2009. Often known as "land grabbing," this phenomenon is associated with an appropriation of freshwater resources that has never been assessed before. Here we gather land-grabbing data from multiple sources and use a hydrological model to determine the associated rates of freshwater grabbing. We find that land and water grabbing are occurring at alarming rates in all continents except Antarctica. The per capita volume of grabbed water often exceeds the water requirements for a balanced diet and would be sufficient to improve food security and abate malnourishment in the grabbed countries. It is found that about 0.31 × 10(12) m(3) · y(-1) of green water (i.e., rainwater) and up to 0.14 × 10(12) m(3) · y(-1) of blue water (i.e., irrigation water) are appropriated globally for crop and livestock production in 47 × 10(6) ha of grabbed land worldwide (i.e., in 90% of the reported global grabbed land).
Authors:
Maria Cristina Rulli; Antonio Saviori; Paolo D'Odorico
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2013-01-02
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  110     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-01-16     Completed Date:  2013-03-14     Revised Date:  2013-07-16    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  892-7     Citation Subset:  IM    
Affiliation:
Department of Hydraulics, Roadways, Environmental and Surveying Engineering, Politecnico di Milano, Milan I-20133, Italy.
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MeSH Terms
Descriptor/Qualifier:
Agriculture
Conservation of Natural Resources*
Fresh Water
Humans
Internationality
Ownership
Water Supply*
Comments/Corrections

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