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(Article of periodic en Anglais - 2013)

Document title

Channel network extent in the context of historical land use, flow generation processes, and landscape evolution in the North Carolina Piedmont

Authors(s) and Affiliation(s)

JEFFERSON A.J. (1 2) ; MCGEE R.W. (1 3) ;
(1) Dept. of Geography and Earth Sciences, Univ. of North Carolina, Charlotte, ETATS-UNIS
(2) Dept. of Geology, State Univ., Kent, ETATS-UNIS
(3) Hart & Hickman, Charlotte, ETATS-UNIS

Abstract

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 of afforestation. Channel initiation mapping and area-slope relationships are shown to be useful tools for interpreting geomorphic effects of land use change

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no6 [pp. 601-613]

Bibliographic references : 2 p.

Collation : 6 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3308

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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