Ferrer Julià et al. (2004), saturated-conductivity PTFs for Spanish soils.¶
Source¶
Ferrer Julià, M., Estrela Monreal, T., Sánchez del Corral Jiménez, A., & García Meléndez, E. (2004). Constructing a saturated hydraulic conductivity map of Spain using pedotransfer functions and spatial prediction. Geoderma, 123, 257-277.
DOI: 10.1016/j.geoderma.2004.02.011
Scope¶
Territory: Spanish mainland on the Iberian Peninsula
Dataset: Trueba et al. (2000a) Spanish soil database: 2178 profiles and 7011 horizons; the general regressions used 3172 horizons with sufficient data.
Functions¶
calc_ptf_ferrerjulia2004_campbell_shiozawa¶
Evaluate the Campbell and Shiozawa saturated-conductivity PTF.
Status: implemented
Prediction target: Saturated hydraulic conductivity.
Models: \(k(h)\) — Campbell and Shiozawa (1994)
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Reproduced in Section 4.2 for comparison with the new Spanish-soil PTFs.
calc_ptf_ferrerjulia2004_saxton¶
Evaluate the Saxton et al. saturated-conductivity PTF.
Status: implemented
Prediction target: Saturated hydraulic conductivity.
Models: \(k(h)\) — Saxton et al. (1986)
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 < value <= 100 | Clay content by percentage; strictly positive for the base-10 logarithm. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Reproduced in Section 4.2 for comparison with the new Spanish-soil PTFs.
Warning
The denominator contains log10(clay) and the source does not state its valid domain or singularity policy.
calc_ptf_ferrerjulia2004_dane_puckett¶
Evaluate the Dane and Puckett saturated-conductivity PTF.
Status: implemented
Prediction target: Saturated hydraulic conductivity.
Models: \(k(h)\) — Dane and Puckett (1994)
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Reproduced in Section 4.2 for comparison with the new Spanish-soil PTFs.
calc_ptf_ferrerjulia2004_puckett¶
Evaluate the Puckett et al. saturated-conductivity PTF.
Status: implemented
Prediction target: Saturated hydraulic conductivity.
Models: \(k(h)\) — Puckett et al. (1985)
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Reproduced in Section 4.2 for comparison with the new Spanish-soil PTFs.
calc_ptf_ferrerjulia2004_cosby¶
Evaluate the Cosby et al. saturated-conductivity PTF.
Status: implemented
Prediction target: Saturated hydraulic conductivity.
Models: \(k(h)\) — Cosby et al. (1984)
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Reproduced in Section 4.2 for comparison with the new Spanish-soil PTFs.
calc_ptf_ferrerjulia2004_humic_acrisol_sand¶
Estimate saturated conductivity for Humic Acrisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Humic Acrisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.723.
calc_ptf_ferrerjulia2004_humic_acrisol_texture_organic_matter¶
Estimate saturated conductivity for Humic Acrisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Humic Acrisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.701.
calc_ptf_ferrerjulia2004_calcic_cambisol_sand¶
Estimate saturated conductivity for Calcic Cambisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcic Cambisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.521.
calc_ptf_ferrerjulia2004_calcic_cambisol_texture_organic_matter¶
Estimate saturated conductivity for Calcic Cambisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcic Cambisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.468.
calc_ptf_ferrerjulia2004_dystric_cambisol_sand¶
Estimate saturated conductivity for Dystric Cambisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Dystric Cambisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.750.
calc_ptf_ferrerjulia2004_dystric_cambisol_texture_organic_matter¶
Estimate saturated conductivity for Dystric Cambisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Dystric Cambisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.779.
calc_ptf_ferrerjulia2004_eutric_cambisol_sand¶
Estimate saturated conductivity for Eutric Cambisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Eutric Cambisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.734.
calc_ptf_ferrerjulia2004_eutric_cambisol_texture_organic_matter¶
Estimate saturated conductivity for Eutric Cambisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Eutric Cambisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.686.
calc_ptf_ferrerjulia2004_gleyic_cambisol_sand¶
Estimate saturated conductivity for Gleyic Cambisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Gleyic Cambisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.807.
calc_ptf_ferrerjulia2004_gleyic_cambisol_texture_organic_matter¶
Estimate saturated conductivity for Gleyic Cambisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Gleyic Cambisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.824.
calc_ptf_ferrerjulia2004_humic_cambisol_sand¶
Estimate saturated conductivity for Humic Cambisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Humic Cambisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.592.
calc_ptf_ferrerjulia2004_humic_cambisol_texture_organic_matter¶
Estimate saturated conductivity for Humic Cambisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Humic Cambisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.632.
calc_ptf_ferrerjulia2004_calcaric_fluvisol_sand¶
Estimate saturated conductivity for Calcaric Fluvisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcaric Fluvisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.772.
calc_ptf_ferrerjulia2004_calcaric_fluvisol_texture_organic_matter¶
Estimate saturated conductivity for Calcaric Fluvisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcaric Fluvisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.792.
calc_ptf_ferrerjulia2004_calcic_luvisol_sand¶
Estimate saturated conductivity for Calcic Luvisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcic Luvisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.412.
Warning
The paper reports weak fit and suggests missing clay-mineralogy information.
calc_ptf_ferrerjulia2004_calcic_luvisol_texture_organic_matter¶
Estimate saturated conductivity for Calcic Luvisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcic Luvisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.473.
Warning
The paper reports weak fit and suggests missing clay-mineralogy information.
calc_ptf_ferrerjulia2004_chromic_luvisol_sand¶
Estimate saturated conductivity for Chromic Luvisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Chromic Luvisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.534.
calc_ptf_ferrerjulia2004_chromic_luvisol_texture_organic_matter¶
Estimate saturated conductivity for Chromic Luvisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Chromic Luvisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.557.
calc_ptf_ferrerjulia2004_gleyic_luvisol_sand¶
Estimate saturated conductivity for Gleyic Luvisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Gleyic Luvisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.876.
calc_ptf_ferrerjulia2004_gleyic_luvisol_texture_organic_matter¶
Estimate saturated conductivity for Gleyic Luvisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Gleyic Luvisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.917.
calc_ptf_ferrerjulia2004_orthic_luvisol_sand¶
Estimate saturated conductivity for Orthic Luvisol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Orthic Luvisol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.676.
calc_ptf_ferrerjulia2004_orthic_luvisol_texture_organic_matter¶
Estimate saturated conductivity for Orthic Luvisol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Orthic Luvisol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.729.
calc_ptf_ferrerjulia2004_ranker_sand¶
Estimate saturated conductivity for Ranker from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Ranker.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.726.
calc_ptf_ferrerjulia2004_ranker_texture_organic_matter¶
Estimate saturated conductivity for Ranker from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Ranker.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.717.
calc_ptf_ferrerjulia2004_calcaric_regosol_sand¶
Estimate saturated conductivity for Calcaric Regosol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcaric Regosol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.655.
calc_ptf_ferrerjulia2004_calcaric_regosol_texture_organic_matter¶
Estimate saturated conductivity for Calcaric Regosol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Calcaric Regosol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.705.
calc_ptf_ferrerjulia2004_dystric_regosol_sand¶
Estimate saturated conductivity for Dystric Regosol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Dystric Regosol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.834.
calc_ptf_ferrerjulia2004_dystric_regosol_texture_organic_matter¶
Estimate saturated conductivity for Dystric Regosol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Dystric Regosol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.862.
calc_ptf_ferrerjulia2004_eutric_regosol_sand¶
Estimate saturated conductivity for Eutric Regosol from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Eutric Regosol.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.824.
calc_ptf_ferrerjulia2004_eutric_regosol_texture_organic_matter¶
Estimate saturated conductivity for Eutric Regosol from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Eutric Regosol.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.702.
calc_ptf_ferrerjulia2004_rendzina_sand¶
Estimate saturated conductivity for Rendzina from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Rendzina.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; horizon-level R^2 = 0.221; the paper separately reports profile-average R^2 = 0.727 without coefficients.
Warning
The horizon-level regression has weak fit and is affected by converted qualitative conductivity values.
calc_ptf_ferrerjulia2004_rendzina_texture_organic_matter¶
Estimate saturated conductivity for Rendzina from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Rendzina.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.340.
Warning
The regression has weak fit and is affected by converted qualitative conductivity values.
calc_ptf_ferrerjulia2004_gleyic_solonchak_sand¶
Estimate saturated conductivity for Gleyic Solonchak from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Gleyic Solonchak.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3 prints R^2 = 0.399; the prose later states 0.435.
Warning
The source gives inconsistent R^2 values for this regression.
calc_ptf_ferrerjulia2004_gleyic_solonchak_texture_organic_matter¶
Estimate saturated conductivity for Gleyic Solonchak from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for FAO 1974 Gleyic Solonchak.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Table 3; R^2 = 0.682.
Note
Human review corrected the anomalous printed intercept from -90917 to -0.90917.
Warning
The implementation intentionally differs from the original published Table 3
Warning
which prints the intercept as -90917.
calc_ptf_ferrerjulia2004_general_sand¶
Estimate saturated conductivity for Spanish soils from sand content.
Status: implemented
Prediction target: Saturated hydraulic conductivity for the combined Spanish-soil dataset.
Models: \(k(h)\) — Exponential one-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Section 5.1; 3172 horizons; R^2 = 0.696.
Warning
The paper recommends use when data are statistically similar to its Spanish-soil calibration data.
calc_ptf_ferrerjulia2004_general_texture_organic_matter¶
Estimate saturated conductivity for Spanish soils from texture and organic matter.
Status: implemented
Prediction target: Saturated hydraulic conductivity for the combined Spanish-soil dataset.
Models: \(k(h)\) — Linear three-variable regression
Inputs¶
| Name | Type | Unit | Domain | Description |
|---|---|---|---|---|
sand | number | % | 0 <= value <= 100 | Sand content by percentage. |
clay | number | % | 0 <= value <= 100 | Clay content by percentage. |
organic_matter | number | % | 0 <= value <= 100 | Organic matter content by percentage. |
Outputs¶
| Name | Unit | Domain | Description |
|---|---|---|---|
k_sat | mm/h | — | Estimated saturated hydraulic conductivity. |
Note
Section 5.1; 3172 horizons; R^2 = 0.715.
Warning
The paper recommends use when data are statistically similar to its Spanish-soil calibration data.