Laserfiche WebLink
r <br />10 <br />wllec~ted. Canopy and gxniu~d cover subfactors can be calculated ; ~.,,iP.,r~y <br />for each ttarLSect. <br />1 <br />Conservation Practice Factor (Pl <br />r The conservation practice factor (P) is the ratio of soil loss under a <br />specified Conservation practice to the standa*T3 situation. Typical Conservation <br />practices axe Contouring, strip QaPP~g, and terracing. For most wildlarrl <br />situations there axe no Lion practices, but on reclaimed soils <br />conservation practices may be incorporated. 'Ihe ooa~sexvation practice factor, P, <br />~, is often used in agricultural ~**;*~ to aocoimt for erosion-prevention mPacn*,ac <br />suds as contouring and terracing. A unit value of 1 is assigned to P when no <br />Conservation practices are implemented. <br />Soil Loss 'tblerance fT1 <br />After all input variables have been calculated for the USIE, average annual <br />soil lass can be estimated. the estimated soil lass values (A) can be aanpar~ed <br />to the soil loss tolerance (T) for that site and erosion es~ as a percent <br />of allo~rable soil loss (AfP) . T~ralues are generally provided in Canty soil <br />surveys, arri are generally a function of plant rooting depth. <br />If the estimated soil lass values exceed the soil loss tolerance of a site <br />(AST exceeds 100 percent) . ~n+~ should be taken to n,rrw i i the intensity or <br />kind of land use or implement rehabilitation practioPS. <br />r <br />