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Abarrancamiento ; Actual ; Aprovechamiento del suelo ; Carolina del Norte ; Cuenca hidrográfica ; Dinámica del paisaje ; Erosión de los suelos ; Erosión hídrica ; Escorrentíafluvial ; Escorrentíahipodérmica ; Escorrentíasuperficial ; Estados Unidos ; Piemonte ; Red de drenaje ; Siglo 18
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In 6 study areas in the North Carolina Piedmont, 100 channel heads were mapped in fully-forested watersheds, revealing a channel initiation relationship between contributing area and local slope. Flow in these channels is generated by subsurface
and overland flow. The measured relative slope exponent is lower than expected based on literature values of ~2 for forested watersheds with subsurface and overland flow, suggesting that the channel network extent may reflect a former hydrological regime
. However, geomorphic evidence of recovery in channel heads within fully forested watersheds is greater than those with present day pasture. Channel network extent appears to be sensitive to land use change, with recovery beginning within decades