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Maarten de Wit and Jacek Stankiewicz, Science 31 March 2006
Uploaded on Tuesday 21 Feb 2012
Changes in available water in Africa: end of 20th and 21st centuries
IAASTD/Ketill Berger, UNEP/GRID-Arendal
Salinization affects about 10% of the world’s irrigated land, while the loss of biodiversity and its associated agroecological functions (estimated to provide economic benefits of US$ 1,542 billion per year) adversely affect productivity especially in environmentally sensitive lands in sub-Saharan Africa and Latin America.