Ensuring that the world's food needs are met by 2050 will take a doubling of global food production. To improve agricultural yields on that scale will require a radical rethink of global water-management strategies and policies. Sub-Saharan Africa is the epicentre of this challenge. Ninety-five per cent of sub-Saharan agriculture depends on 'green water': moisture from rain held in the soil. In large parts of the continent, most rain evaporates before it generates 'blue water', or run-off, so little of it recharges rivers, lakes and groundwater.
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Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/increase-water-harvesting-africa
[2] http://admin.indiaenvironmentportal.org.in/category/author/johan-rockstr%C3%B6m
[3] http://admin.indiaenvironmentportal.org.in/category/author/malin-falkenmark
[4] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-harvesting
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-management
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-security
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/watershed-development
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-sequestration
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-capability
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-mitigation
[17] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dryland-farming
