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One of the best indicators of the potential erosion risks is the rainfall-runoff erosivity factor (R) of the revised universal soil loss equation (RUSLE). Frequently, however, there is not enough data available to compute the R value, and other parameters, such as the modified Fournier index (F mod ), are used instead. But RUSLE is less effective if only the alternative procedures...
There is evidence that, between hydrological years 1931/2 and 1990/ 1, rainfall changed in the Algarve. There was an annual rainfall increase (+9%) and a 7% increase in rainfall during the rainy period (October to February). Both trends were statistically confirmed by parametric and nonparametric procedures.Rainfall erosivity and land degradation are related to rainfall regime. The Algarve's rainfall...
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