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Green water security for the food makers of tomorrow: windows of opportunity in drought-prone savannahs

2001; Pergamon Press; Volume: 43; Issue: 4 Linguagem: Inglês

10.2166/wst.2001.0181

1996-9732

Johan Rockström,

Water resources management and optimization

The largest remaining biophysical water challenge is whether there is enough fresh water to sustain global food production and service natural ecosytems. Focussing on the drought-prone savannahs and small-scale farming, this paper argues that the crucial resource is vapour flow, not "blue" water, and there are grounds for optimism if resource management can be improved.