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Descripción
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| The last half century has witnessed a spectacular development in groundwater use. Its use has increased from some 100Mm3 to almost 1000Mm3 in the period 1950?2000 (Shah, et al., 2007). In this chapter, water volumes are referred to in million cubic meter (106 or Mm3) and billion cubic meter (109,km3 or bcm). This groundwater development has been mainly used for irrigation in arid and semiarid regions. Nevertheless, the use of groundwater for rural and urban water supply is very important; in some countries, like in Italy, it represents 90% of all of the urban water supply. Although the accuracy of available water-use data is still rather illusory, it seems that today the economic value of groundwater irrigation is even greater than the corresponding value of surface-water irrigation. | |
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Internacional
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Si |
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DOI
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Edición del Libro
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Editorial del Libro
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Elsevier Ltd. |
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ISBN
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978-0-444-53193-3 |
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Serie
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Título del Libro
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Treatise on Water Science |
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Desde página
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97 |
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Hasta página
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127 |