Calcium and strontium isotope dynamics in three polluted forest ecosystems of the Czech Republic, Central Europe
作者： Martin Novak , Chris Holmden , Juraj Farkaš , Pavel Kram , Jakub Hruska
DOI: 10.1016/J.CHEMGEO.2020.119472
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摘要: Abstract Calcium and strontium isotope ratios were used to identify Ca sources for bulk soil, soil solutions runoff in the stressed forest ecosystems of Central Europe. All three study sites are underlain by Ca-poor crystalline bedrock (orthogneiss, leucogranite serpentinite, respectively), but differ historical rates acid deposition. UDL, spruce die-back affected site at Czech–Polish border orthogneiss, received six times more acidifying compounds from atmosphere than LYS PLB, two paired catchments near Czech–German border. The border, whose forests only mildly damaged industrial pollution, their buffering capacity (extremely low leucogranite, extremely high PLB serpentinite). At catchment 19 years monthly hydrochemical monitoring revealed higher atmospheric deposition fluxes Ca, compared PLB. Across sites, mean δ44Ca values increased order: bark (−0.84‰)
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