HOW TO CALCULATE MANAGEMENT PRACTICE (P) FACTOR USING Arc GIS STEP BY STEP IN RUSLE MODE(አማርኛ ቱቶር)
502 بار بازدید -
7 ماه پیش
-
GIS based soil loss assessment
GIS based soil loss assessment using RUSLE model
A=R ∗ K ∗ LS ∗ C ∗ P
Where,
A = annual soil loss (metric tons ha-1yr-1),
R = rainfall erosivity factor (MJ mm h-1 ha-1 yr-1),
K = soil erodibility factor (metric tons ha-1 MJ–1 mm-1),
LS = slope length and steepness factor (dimensionless)
C = land cover and management factor (dimensionless) and
P = conservation practice factor (dimensionless
Conservation support practice factor (P)
The conservation practice factor (P) represents the ratio of soil loss by a support practice to that of straight-row farming up and down the slope and
is used to account for the positive impacts of those support practices.
The P factor accounts for control practices that reduce the erosion potential of the runoff by their influence on
drainage patterns,
runoff concentration,
runoff velocity, and
hydraulic forces exerted by runoff on soil.
The value of P factor ranges from 0 to 1, the value approaching to 0 indicates good conservation practice and the value approaching to 1 indicates poor conservation practice.
7 ماه پیش
در تاریخ 1402/12/03 منتشر شده
است.
502
بـار بازدید شده