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Soil erosion from agricultural land in the Lake Simcoe-Couchiching
Basin, 1800-1981.
Wilson, JP
CAN. J. SOIL SCI./REV. CAN. SCI. SOL. Vol. 69, no. 1, pp. 137-151.
1989.
Soil losses from agricultural land in the Lake Simcoe-Couchiching
Basin between 1800 and 1981 are estimated with the universal soil
loss equation (USLE). Existing methods and data are used to
estimate and combine the six USLE factors with one exception. A
new method that is consistent with the USLE slope definitions was
developed and used to estimate the topographic factor. The results
of the present study add to earlier erosion assessments because
they describe the erosion hazard throughout the basin from the
first days of forest clearance and agricultural settlement to the
present.
 Descriptors: Article Subject Terms agricultural land
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