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P K-edge XANES spectra of soils under different land uses. Figure panels are for soils from annual croplands (A), tame grasslands (B), native grasslands (C), roadsides (D). Samples from each land use type were collected at four locations: Val Marie (VM), Auvergne Wise Creek (AWC), Masefield1 (MF1), and Masefield2 (MF2).
