PT  - JOURNAL ARTICLE
AU  - M. L. Griffin
AU  - D. B. Beasley
AU  - J. J. Fletcher
AU  - G. R. Foster
TI  - Estimating soil loss on topographically non-uniform field and farm units
DP  - 1988 Jul 01
TA  - Journal of Soil and Water Conservation
PG  - 326--331
VI  - 43
IP  - 4
4099  - http://www.jswconline.org/content/43/4/326.short
4100  - http://www.jswconline.org/content/43/4/326.full
AB  - Several forms of the universal soil loss equation, along with the ANSWERS hydrologic/erosion model were used to estimate soil erosion on topographically non-uniform field and farm units on two farms in Indiana. Both soil loss at a point and average soil loss along a landscape profile were used to estimate erosion. Soil loss estimates using USLE methods were aggregated to obtain field and farm averages. ANSWERS was included because it computes erosion over topographically non-uniform areas. Sampling density was critical for the USLE methods, while element size was critical for ANSWERS. With sufficiently dense sampling, each USLE method gave similar results, but the method that estimated average erosion on the landscape profiles required the fewest sampling points. The ANSWERS and USLE results, although different, were comparable considering the differences in prediction techniques.