root_distribution_coefficient

Label: Root biomass depth distribution coefficient
Entity URI: https://w3id.org/APD/traits/trait_0012114
Type: numeric
Definition: A root system morphology trait [TO:0000985] which is a model parameter [STATO:0000034] indicating the distribution [PATO:0000060] of a plant's roots [PO:0009005] with depth [PATO:0001595]. To calculate the model parameter, the required input is a plot of the cumulative root distribution from the surface, where [Y] is the cumulative fraction of roots from the surface to a depth [d]. An asymptotic nonlinear model is used to describe the vertical root distribution: Y = 1 - b^d where Y is the cumulative root fraction from the surface to soil depth d in centimeters and b the estimated parameter.;Root biomass depth distribution coefficient ('B' from Gale & Grigal 1987), where high values indicate that root biomass is allocated deeper in the soil. To calculate the model parameter, the required input is a plot of the cumulative root distribution from the surface, where [Y] is the cumulative fraction of roots from the surface to a depth [d]. An asymptotic nonlinear model is used to describe the vertical root distribution: Y = 1 - b^d where Y is the cumulative root fraction from the surface to soil depth d in centimeters and b the estimated parameter.
Additional comments: None
units: {dimensionless}
allowable range: 0.5 - 1 {dimensionless}

See the AusTraits Plant Dictionary (https://w3id.org/APD/traits/trait_0012114) for additional information about this trait.

Coverage

For this trait, AusTraits includes a total of 75 records. This includes: