Aimrun & Amin (2009), Tanjung Karang Rice Irrigation Project, Malaysia.¶
Source¶
Aimrun, W., & Amin, M. S. M. (2009). Pedo-transfer function for saturated hydraulic conductivity of lowland paddy soils. Paddy and Water Environment, 7, 217-225.
DOI: 10.1007/s10333-009-0165-y
Scope¶
Territory: Tanjung Karang Rice Irrigation Project, located on a flat coastal plain in the Integrated Agricultural Development Area (IADA Barat Laut Selangor), Malaysia
Dataset: 408 lowland paddy soil samples from Sawah Sempadan rice cultivation area.
Functions¶
calc_ptf_aimrun2009¶
Estimate saturated hydraulic conductivity for lowland paddy soils.
Status: implemented
Prediction target: Saturated hydraulic conductivity from clay, dry bulk density, organic matter, and geometric mean diameter.
Models: \(k(h)\) — Saturated hydraulic conductivity
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
clay | number | % | value > 0 | Clay content, <2 um. |
bulk_density | number | g/cm^3 | value > 0 | Dry bulk density. |
organic_matter | number | % | value > 0 | Organic matter content. |
gmd | number | mm | value > 0 | Geometric mean diameter of texture. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | m/s | value >= 0 | Saturated hydraulic conductivity. |
Note
Sand and silt are not inputs to the selected final model.
Note
Applicability: Clayey rice soils with compacted subsoil.
Warning
The formula uses natural logarithms of all inputs.