Sand, Rarer than One Thinks: UNEP Global Environmental Alert Service (GEAS) - March 2014
Date
2014Author
United Nations Environment Programme
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RT Generic T1 Sand, Rarer than One Thinks: UNEP Global Environmental Alert Service (GEAS) - March 2014 A1 United Nations Environment Programme YR 2014 LK https://wedocs.unep.org/20.500.11822/8665 PB AB TY - GEN T1 - Sand, Rarer than One Thinks: UNEP Global Environmental Alert Service (GEAS) - March 2014 AU - United Nations Environment Programme Y1 - 2014 UR - https://wedocs.unep.org/20.500.11822/8665 PB - AB - @misc{20.500.11822_8665 author = {United Nations Environment Programme}, title = {Sand, Rarer than One Thinks: UNEP Global Environmental Alert Service (GEAS) - March 2014}, year = {2014}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/8665} } @misc{20.500.11822_8665 author = {United Nations Environment Programme}, title = {Sand, Rarer than One Thinks: UNEP Global Environmental Alert Service (GEAS) - March 2014}, year = {2014}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/8665} } TY - GEN T1 - Sand, Rarer than One Thinks: UNEP Global Environmental Alert Service (GEAS) - March 2014 AU - United Nations Environment Programme UR - https://wedocs.unep.org/20.500.11822/8665 PB - AB -View/Open
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Sand and gravel are mined world-wide and account for the largest volume of solid material extracted globally. Formed by erosive processes over thousands of years (John, 2009), they are now being extracted at a rate far greater than their renewal. Furthermore, the volume being extracted is having a major impact on rivers, deltas and coastal and marine ecosystems (Figure 1), results in loss of land through river or coastal erosion, lowering of the water table and decreases in the amount of sediment supply. Despite the colossal quantities of sand and gravel being used, our increasing dependence on them and the significant impact that their extraction has on the environment, this issue has been mostly ignored by policy makers and remains largely unknown by the general public.
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