Fig. 2: Temporal Evolution of PGQ Area and Affected Population. | Nature Communications

Fig. 2: Temporal Evolution of PGQ Area and Affected Population.

From: Groundwater quality evolution across China

Fig. 2

a Temporal evolution of the PGQ area ratio from 1980 to 2100; b Ratio of the population affected by PGQ over the same period. Future projections (2025–2100) are evaluated under four scenarios (‘Scenario settings’ in “Methods”). Here, regions with a PGQ probability exceeding 0.5 are classified as PGQ-affected areas.

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