Nutrient accounting in Forest ecosystems: Account balance over time t:B(t)=lin*At-lout*At I...Flux rate B(t)=0→steady state B(t)≠O:→stock changeNutrient accoun4ng in Forest ecosystems: Account balance over .me t: B(t) = Iin *Δt- Iout *Δt I … Flux rate B(t) = 0 à steady state B(t) ≠ 0: à stock change