Global depletion of groundwater resources

被引:1329
作者
Wada, Yoshihide [1 ]
van Beek, Ludovicus P. H. [1 ]
van Kempen, Cheryl M. [2 ]
Reckman, Josef W. T. M. [2 ]
Vasak, Slavek [2 ]
Bierkens, Marc F. P. [1 ,3 ]
机构
[1] Univ Utrecht, Dept Phys Geog, NL-3508 TC Utrecht, Netherlands
[2] Deltares, Int Groundwater Resources Assessment Ctr, NL-3508 AL Utrecht, Netherlands
[3] Deltares, Unit Soil & Groundwater Syst, Utrecht, Netherlands
关键词
SUSTAINABILITY; CLIMATE;
D O I
10.1029/2010GL044571
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
In regions with frequent water stress and large aquifer systems groundwater is often used as an additional water source. If groundwater abstraction exceeds the natural groundwater recharge for extensive areas and long times, overexploitation or persistent groundwater depletion occurs. Here we provide a global overview of groundwater depletion (here defined as abstraction in excess of recharge) by assessing groundwater recharge with a global hydrological model and subtracting estimates of groundwater abstraction. Restricting our analysis to sub-humid to arid areas we estimate the total global groundwater depletion to have increased from 126 (+/- 32) km(3) a(-1) in 1960 to 283 (+/- 40) km(3) a(-1) in 2000. The latter equals 39 (+/- 10)% of the global yearly groundwater abstraction, 2 (+/- 0.6)% of the global yearly groundwater recharge, 0.8 (+/- 0.1)% of the global yearly continental runoff and 0.4 (+/- 0.06)% of the global yearly evaporation, contributing a considerable amount of 0.8 (+/- 0.1) mm a(-1) to current sea-level rise. Citation: Wada, Y., L. P. H. van Beek, C. M. van Kempen, J. W. T. M. Reckman, S. Vasak, and M. F. P. Bierkens (2010), Global depletion of groundwater resources, Geophys. Res. Lett., 37, L20402, doi:10.1029/2010GL044571.
引用
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页数:5
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