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An upland soil erosion model derived from the basic principles
Author(s) -
Sharma K. D.,
Correia J. F.
Publication year - 1987
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290120210
Subject(s) - surface runoff , erosion , storm , hydrology (agriculture) , environmental science , soil loss , soil science , wepp , geology , soil conservation , geomorphology , geotechnical engineering , ecology , oceanography , biology , agriculture
Starting from the basic erosion principles, an upland soil erosion model to predict soil loss by overland flow from individual storms on forested hillslopes can be derived in the form\documentclass{article}\pagestyle{empty}\begin{document}$$Q_5 = Nx^2 K_{\rm f} S^\alpha Q,$$\end{document} where Q s is total soil loss for a storm event, n is roughness coefficient, x is down slope distance, K f is soil erodibility factor, S is slope, α is slope exponent and Q is runoff. Values of n and α are to be determined for different environments and are 0·58 and 2·1 for a mixed pine forest ecosystem. A significant correlation ( r = 0·933, n = 96) fits between the observed and predicted values using this expression, and the model fitting is good.