On the Calculation and Interpretation of Target Load Functions

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On the Calculation and Interpretation of Target Load Functions. / Alveteg, Mattias; Fransson, Liisa.

In: Water, Air, & Soil Pollution: Focus, Vol. 7, No. 1-3, 2007, p. 385-390.

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TY - JOUR

T1 - On the Calculation and Interpretation of Target Load Functions

AU - Alveteg, Mattias

AU - Fransson, Liisa

PY - 2007

Y1 - 2007

N2 - In this study critical load functions and target load functions of nitrogen and sulphur deposition with respect to acidity and minimum base cation to aluminium ratio were calculated with the SAFE model using three different averaging strategies: (1) averaging based on current forest generation, (2) averaging based on next generation and (3) averaging based on the entire simulation period. From the results it is evident that although target load calculation and indeed critical load calculation is straight forward, there is a problem in translating a predicted recovery according to the target load calculation back to a site-specific condition. We conclude that a policy strategy for emission reductions that ensures recovery, according to calculated target load functions, is likely to be beneficial from an ecosystem point of view. However, such a strategy may not be sufficient to achieve actual non-violation of the chemical criteria throughout the seasonal or rotational variations. To address this issue we propose a method for calculating dynamic critical loads which ensures that the chosen criteria is not violated.

AB - In this study critical load functions and target load functions of nitrogen and sulphur deposition with respect to acidity and minimum base cation to aluminium ratio were calculated with the SAFE model using three different averaging strategies: (1) averaging based on current forest generation, (2) averaging based on next generation and (3) averaging based on the entire simulation period. From the results it is evident that although target load calculation and indeed critical load calculation is straight forward, there is a problem in translating a predicted recovery according to the target load calculation back to a site-specific condition. We conclude that a policy strategy for emission reductions that ensures recovery, according to calculated target load functions, is likely to be beneficial from an ecosystem point of view. However, such a strategy may not be sufficient to achieve actual non-violation of the chemical criteria throughout the seasonal or rotational variations. To address this issue we propose a method for calculating dynamic critical loads which ensures that the chosen criteria is not violated.

U2 - 10.1007/s11267-006-9101-y

DO - 10.1007/s11267-006-9101-y

M3 - Article

VL - 7

SP - 385

EP - 390

JO - Water, Air, and Soil Pollution: Focus

T2 - Water, Air, and Soil Pollution: Focus

JF - Water, Air, and Soil Pollution: Focus

SN - 1573-2940

IS - 1-3

ER -