We conclude that
1. Al fluxes in the ecosystemare mainly controled by high precipitation,
biomass production, presence of Al-accumulating plant species and
soil pH. Partly high Al fluxes, particularly in litterfall, illustrate a
high Al circulation through the ecosystem possibly influenced by
the abundance of Al-accumulating plants.
2. The fraction of exchangeable Al on cation exchanger surfaces and the
concentrations of dissolved Alinorganic were high in mineral soils. Togetherwith
the problematicMg:Al ratios, Al toxicity is a likely reason