Calculating capillary rise
cal_capillaryRise(
a1,
b1 = -0.17,
a2,
b2 = -0.27,
a3 = -1.3,
b3,
a4,
b4,
Dw,
Wa,
LAI,
ETm
)The value for capillary Rise (mm/day).
Soil water storage to maximum root depth at field capacity(mm).
A parameter.
storage above the average between those at field capacity and the wilting point(mm).
A parameter.
A parameter.
A parameter.6.7 for clay and silty clay loam soils, decreasing to 6.2 for loamy sands
A parameter.4.6 for silty loam and silty clay loam soils,decreasing to 6.2 for loamy sands.
A parameter.-0.65 for silty loam soils and decreasing to -2.5 for loamy sand soils.
Groudwater depth below root zone(m).
actual soil water storage in the root zone.
Leaf area index.
potential crop evaporanspiration (mm/day),usually ETm=ETc(mm/d).
Liu Y, Pereira L S, Fernando R M. Fluxes through the bottom boundary of the root zone in silty soils: Parametric approaches to estimate groundwater contribution and percolation[J]. Agricultural Water Management, 2006, 84(1):27-40.