Human impacts on soil properties and their implications for the sensitivity of soil systems in Scotland
Action anthropique ; Boisement ; Changement global ; Elément-trace ; Impact ; Propriétés du sol ; Royaume-Uni ; Scotland ; Sol ; Utilisation agricole du sol
Afforestation ; Agricultural land use ; Global change ; Human impact ; Impact ; Scotland ; Soil ; Soil properties ; Trace-element ; United Kingdom
the impact of such recent human-induced changes on soils in Scotland and assess whether we have sufficient knowledge to predict the sensitivity of soil systems to further perturbations.
Analyse de sensibilité ; Changement global ; Circulation atmosphérique ; Cours d'eau ; Crue ; Evolution de vallée ; Lit fluvial ; Royaume-Uni ; Scotland ; Siècle 19 ; Utilisation du sol
Atmospheric circulation ; Flood ; Global change ; Land use ; Nineteenth Century ; River bed ; Scotland ; Sensitivity analysis ; Stream ; United Kingdom ; Valley floor evolution
This paper examines the stability of river channels and their associated valley floors in the uplands of Scotland since 1750. Changes in global-scale atmospheric circulation patterns during this period have resulted in regionally district flood-rich
and flood-poor periods with potential geomorphic impacts. Changes in the planform of 9 active rivers in the piedmont zone of upland Scotland are examined from series of rectified maps and aerial photographs at scales close to 1:10 000. Differences
in geomorphic history, land use and degree of slope-channel coupling are identify as the likely causes of marked differences in the behaviour of active rivers in Scotland and northern England over the last 250 years.
there ? In discussing the first question, the AA. note the difficulty of achieving a precise definition, though it is vegetation that largely gives landscapes their colour and texture. They explore the other three questions using examples and data from Scotland, mainly