Extended Data Fig. 6: Land use.
From: Vegetation feedbacks during drought exacerbate ozone air pollution extremes in Europe
a, Fraction of the four land use categories in each grid cell averaged over 2000–2015: Natural forests (lands undisturbed by human activities), secondary vegetation (lands harvested at least once, including managed forests and abandoned cropland and pasture), croplands, and pastures. b, Changes in 2000–2015 relative to the 1960s. The box denotes the area used for averaging in Extended Data Fig. 7.
