View source: R/soilStrength3.R
soilStrength3 | R Documentation |
It calculates the precompression stress using the pedo-transfer function from Saffih-Hdadi et al. (2009)
soilStrength3(bulk.density, water.content, texture=c("VeryFine","Fine","MediumFine","Medium","Coarse"))
bulk.density |
a numeric vector containing the values of soil bulk density, Mg m^{-3} |
water.content |
a numeric vector containing the values of gravimetric water content, \% |
texture |
the soil texture group. See exemples |
The function returns 0 for soil properties values beyond the range for which the function was built.
PC |
the precompression stress |
Renato Paiva de Lima <renato_agro_@hotmail.com> Anderson Rodrigo da Silva <anderson.agro@hotmail.com>
Saffih-Hdadi, K.; Defossez, P.; Richard, G.; Cui, Y. J.; Tang, A. M.; Chaplain, V, 2009. A method for predicting soil susceptibility to the compaction of surface layers as a function of water content and bulk density Geoderma, 115: 96-103.
stressTraffic
# EXAMPLE 1 soilStrength3(bulk.density=1.1, water.content=40, texture="VeryFine") soilStrength3(bulk.density=1.2, water.content=20, texture="Fine") soilStrength3(bulk.density=1.3, water.content=15, texture="MediumFine") soilStrength3(bulk.density=1.4, water.content=15, texture="Medium") soilStrength3(bulk.density=1.5, water.content=10, texture="Coarse") # End (not run)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.