The average annual PM2.5 concentration in the Yellow River Basin exhibited an overall trend of first increasing and then decreasing, with a rise from 31.80 μg/m 3 in 1998 to 32.47 μg/m 3 in 2019, marking a 0.67 μg/m 3 increase over the study period.
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Spatial and temporal characteristic of PM2.5 and influence factors in the Yellow River Basin.
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