Dl. Mokma et al., EFFECT OF EROSION ON MORPHOLOGY AND CLASSIFICATION OF SOILS IN THE NORTH CENTRAL UNITED-STATES, Journal of soil and water conservation, 51(2), 1996, pp. 171-175
Citations number
29
Categorie Soggetti
Water Resources",Ecology,"Agriculture Soil Science
This study was conducted to determined the effects of erosion on morph
ology and classification of five Alfisols and nine Mollisols in north
central United States. Horizon thickness and solum thickness decreased
with increasing amounts of erosion. Transitional horizons between Ap
and B horizons were absent in some moderately eroded and most severely
eroded soils. With increasing erosion Ap horizons tended to increase
in clay content when underlain by a Bt horizon and become lighter in c
olor. Depths to the bottom of Bt horizons and to C horizons were reduc
ed as erosion increased Estimates of soil loss from these soils ran be
st be made using the lower boundary of a Bt horizon or a fragipan, the
depth to the C horizon, or a lithologic discontinuity. Eleven (two of
five Alfisols and all nine Mollisols) severely and eight (one Alfisol
and seven Mollisols) moderately eroded soils failed to meet criteria
for the taxonomic placement of the associated uneroded soils.