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. 2018 Apr 11;26(3):2184–2202. doi: 10.1007/s11356-018-1859-8

Fig. 4.

Fig. 4

Evolution of nitrate concentration in the aquifer based on the mass balance model for the distinct aquifers considered in this study, under different future hydrological conditions (present, 2050, and a linearly variation of recharge rates), and considering two simulation scenarios according to nitrate input load and decay rates