Weathering rates of Ca and Mg related to granitic and gabbro mineralogy in boreal forest soils and the effect of mechanical soil disturbance on weathering release

This study’s aim was to calculate the weathering rates of Ca and Mg for five boreal forest soils in southern Finland on granitic gabbro containing bedrock. The effect mineralogy total concentrations soil evaluated. also estimate mechanical disturbance related ploughing area. SiO2, CaO, MgO, Zr were determined by XRF, based changes concentrations. Ca+Mg varied 5–38 mmolc m–2 year–1 E+B/BC horizons among plots. Soil increased largely disturbed part topmost mineral as indicated decreasing after disturbance. input undisturbed did not fully replace output final whole-tree cutting. sufficient lost stemwood harvesting but all plots harvesting. Weathering higher than areas.