Contents
What are the 6 Rusle factors?
R = rainfall-runoff erosivity factor.
What is soil K factor?
The K Factor is an index which quantifies the relative susceptibility of the soil to sheet and rill erosion. Soils high in clay have low K values because they resist detachment. Coarse textured soils (such as sandy soils) have low K values because of low runoff.
How does the LS factor work in erosion?
LS factors = the slope length factor L computes the effect of slope length on erosion and the slope steepness factor S computes the effect of slope steepness on erosion. Values of both L and S equal 1 for the unit plot conditions of 72.6 ft. length and 9 percent steepness.
How long should the slope of a RUSLE be?
Slope lengths usually do not exceed 400 ft. Slope lengths longer than 1000 ft should not be used in RUSLE because the reliability of RUSLE at these long slope lengths is questionable, and flow becomes concentrated on most landscapes before such long slope lengths.
How are slope steepness and LS factors related?
L factor and S factor are usually considered together. LS factors = the slope length factor L computes the effect of slope length on erosion and the slope steepness factor S computes the effect of slope steepness on erosion. Values of both L and S equal 1 for the unit plot conditions of 72.6 ft. length and 9 percent steepness.
When to use RUSLE and soil loss tolerance?
It is not directly used in RUSLE equation, but is often used along with RUSLE for conservation planning. Soil loss tolerance (T) is the maximum amount of soil loss in tons per acre per year, that can be tolerated and still permit a high level of crop productivity to be sustained economically and indefinitely.