Environmental Engineering Reference
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Fig. 2.8 An evolving land use: intense deforestation in the eighteenth century (agro-pastoral
communities); intense gullying (source RTM)
Fig. 2.9 An evolving land use: intense deforestation in the nineteenth century (agro-pastoral
communities); intense gullying (source RTM)
which are biological or physical, are in fact interrelated and adjusted with the
external factor changes. This afforestation is different from situations observed
downstream of flood control dams [
126
]. Its evolution is more progressive and
more long term, as riparian vegetation eventually adjusts to natural hydrological
variations. This phenomenon also differs from other cases of piedmont river
evolution where vegetation metamorphosis has been found to be due to floodplain
abandonment by farmers [
127
].
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