ptfkit.chakraborty2011¶
import ptfkit.chakraborty2011;
Exported namespace: ptfkit::chakraborty2011
Chakraborty et al. (2011), point water-retention PTFs for Indian soils.
Source¶
Chakraborty, D., Mazumdar, S. P., Garg, R. N., Banerjee, S., Santra, P., Singh, R., & Tomar, R. K. (2011). Pedotransfer functions for predicting points on the moisture retention curve of Indian soils. Indian Journal of Agricultural Sciences, 81(11), 1030.
Scope¶
Territory: India
Dataset: 187 soil samples from three or more horizons at locations across India; 107 samples were used for regression development and 80 independent samples for validation. Analyses were performed during 2006-2008.
Chakraborty2011PTFResult¶
struct Chakraborty2011PTFResult {
double water_content_33;
double water_content_100;
double water_content_500;
double water_content_1500;
};
| Field | Description |
|---|---|
water_content_33 | Gravimetric water content at -33 kPa matric potential. (g/g) |
water_content_100 | Gravimetric water content at -100 kPa matric potential. (g/g) |
water_content_500 | Gravimetric water content at -500 kPa matric potential. (g/g) |
water_content_1500 | Gravimetric water content at -1500 kPa matric potential. (g/g) |
Functions¶
calc_ptf_chakraborty2011_eq1¶
Estimate four gravimetric water contents from clay and silt.
[[nodiscard]]
inline Chakraborty2011PTFResult calc_ptf_chakraborty2011_eq1(double clay, double silt)
Parameters¶
| Name | Description |
|---|---|
clay | Clay content by mass. (%) |
silt | Silt content by mass. (%) |
Returns¶
A Chakraborty2011PTFResult value.
Note
Table 3 reports R-squared values of 0.820, 0.709, 0.698, and 0.489 at -33, -100, -500, and -1500 kPa, respectively.
Note
Table 3 reports SEE values of 4.351, 5.051, 3.837, and 4.488 percentage points at the four respective potentials.
Warning
Use outside the source Indian-soil dataset requires independent validation.
calc_ptf_chakraborty2011_eq2¶
Estimate four gravimetric water contents from sand and bulk density.
[[nodiscard]]
inline Chakraborty2011PTFResult calc_ptf_chakraborty2011_eq2(double sand, double bulk_density)
Parameters¶
| Name | Description |
|---|---|
sand | Sand content by mass. (%) |
bulk_density | Dry soil bulk density. (Mg/m^3) |
Returns¶
A Chakraborty2011PTFResult value.
Note
Table 3 reports R-squared values of 0.812, 0.726, 0.721, and 0.519 at -33, -100, -500, and -1500 kPa, respectively.
Note
Table 3 reports SEE values of 4.454, 4.875, 3.691, and 4.352 percentage points at the four respective potentials.
Warning
Use outside the source Indian-soil dataset requires independent validation.
calc_ptf_chakraborty2011_eq3¶
Estimate four gravimetric water contents from clay, silt, and bulk density.
[[nodiscard]]
inline Chakraborty2011PTFResult calc_ptf_chakraborty2011_eq3(double clay, double silt, double bulk_density)
Parameters¶
| Name | Description |
|---|---|
clay | Clay content by mass. (%) |
silt | Silt content by mass. (%) |
bulk_density | Dry soil bulk density. (Mg/m^3) |
Returns¶
A Chakraborty2011PTFResult value.
Note
Table 3 reports R-squared values of 0.830, 0.711, 0.701, and 0.490 at -33, -100, -500, and -1500 kPa, respectively.
Note
Table 3 reports SEE values of 4.253, 5.059, 3.843, and 4.509 percentage points at the four respective potentials.
Warning
Use outside the source Indian-soil dataset requires independent validation.
calc_ptf_chakraborty2011_eq4¶
Estimate four gravimetric water contents from clay, silt, and sand.
[[nodiscard]]
inline Chakraborty2011PTFResult calc_ptf_chakraborty2011_eq4(double clay, double silt, double sand)
Parameters¶
| Name | Description |
|---|---|
clay | Clay content by mass. (%) |
silt | Silt content by mass. (%) |
sand | Sand content by mass. (%) |
Returns¶
A Chakraborty2011PTFResult value.
Note
Table 3 reports R-squared values of 0.844, 0.737, 0.734, and 0.524 at -33, -100, -500, and -1500 kPa, respectively.
Note
Table 3 reports SEE values of 4.078, 4.820, 3.618, and 4.365 percentage points at the four respective potentials.
Warning
Use outside the source Indian-soil dataset requires independent validation.
calc_ptf_chakraborty2011_eq5¶
Estimate four gravimetric water contents from clay, silt, sand, and bulk density.
[[nodiscard]]
inline Chakraborty2011PTFResult calc_ptf_chakraborty2011_eq5(double clay, double silt, double sand, double bulk_density)
Parameters¶
| Name | Description |
|---|---|
clay | Clay content by mass. (%) |
silt | Silt content by mass. (%) |
sand | Sand content by mass. (%) |
bulk_density | Dry soil bulk density. (Mg/m^3) |
Returns¶
A Chakraborty2011PTFResult value.
Note
Table 3 reports R-squared values of 0.847, 0.737, 0.734, and 0.526 at -33, -100, -500, and -1500 kPa, respectively.
Note
Table 3 reports SEE values of 4.045, 4.855, 3.637, and 4.370 percentage points at the four respective potentials.
Warning
Use outside the source Indian-soil dataset requires independent validation.
calc_ptf_chakraborty2011_eq6¶
Estimate four gravimetric water contents from texture, organic carbon, and bulk density.
[[nodiscard]]
inline Chakraborty2011PTFResult calc_ptf_chakraborty2011_eq6(double clay, double silt, double sand, double organic_carbon, double bulk_density)
Parameters¶
| Name | Description |
|---|---|
clay | Clay content by mass. (%) |
silt | Silt content by mass. (%) |
sand | Sand content by mass. (%) |
organic_carbon | Soil organic carbon content by mass. (%) |
bulk_density | Dry soil bulk density. (Mg/m^3) |
Returns¶
A Chakraborty2011PTFResult value.
Note
Table 3 reports R-squared values of 0.849, 0.750, 0.736, and 0.529 at -33, -100, -500, and -1500 kPa, respectively.
Note
Table 3 reports SEE values of 4.060, 5.682, 3.645, and 4.369 percentage points at the four respective potentials.
Warning
Use outside the source Indian-soil dataset requires independent validation.