A CLF for an ecosystem simply defines protection and exceedance for all ratios of sulphur and nitrogen deposition in relation to acidity and nutrient nitrogen critical loads. However, when the load is exceeded it is possible to relate exceedance to excess sulphur, nitrogen, or both, by examination of the relative deposition loads of sulphur and nitrogen. In this exercise we have defined a number of regions, described by the CLF parameters, which help indicate reduction strategies for sulphur and nitrogen deposition
