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soilassessment (version 1.3.1)

Soil Health Assessment Models for Assessing Soil Conditions and Suitability

Description

Soil health assessment builds information to improve decision in soil management. It facilitates assessment of soil conditions for crop suitability [such as those given by FAO ], groundwater recharge, fertility, erosion, salinization [], carbon sequestration, irrigation potential, and status of soil resources.

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Version

Install

install.packages('soilassessment')

Monthly Downloads

600

Version

1.3.1

License

GPL

Maintainer

Christian Thine Omuto

Last Published

June 9th, 2026

Functions in soilassessment (1.3.1)

Information on performance of soil pH (water) harmonization models

RotCmoistcorrection

Estimating moisture effects in RothC carbon turnover modelling

Harmonization models for soil electrical conductivity

Models for converting soil pH (KCl or CaCl) to the equivalent pH (water)

Calculating net primary production using air temperature and mean rainfall amount

Mixed-effects model for harmonizing soil electrical conductivity to the equivalent conductivity of saturated paste extract

Mixed-effects model for harmonizing soil pH (KCl or CaCl2) to the equivalent pH (water)

Harmonization models for soil pH

NDVIcoverfactor

Estimating Cover Factor for Erosion Models Using NDVI Remote Sensing Index for Vegetation

Assessing pH suitability requirements for certain crops and trees

Detrmining Erosion Cover Factor (C Factor) from Vegetation Cover Fraction

Calculating suitability classes

Assessing soil carbon suitability requirements for certain crops and trees

appendTextureclass

Attaching soil textural classes

Information on available SAS models in the harmonization service

Querying global SAS data

A function for implementing RothC carbon turnover model in the soil

SASdata_densityInfo

Information on global spatial distribution of locations with measured soil properties for salt-affected soils (SAS)

Assessing bulk density suitability requirements for certain crops and trees

RotCtempcorrection

Estimating temperature effects in organic matter decomposition rates in the soil

Developing own harmonization model

Displaying names of class codes of soil conditions in the soilassessment package

createTexturedata

Creating spatial dataframe of normalized soil texture proportions

Assessing soil depth suitability requirements for certain crops and trees

Display class names and codes as used in the soilassessment package

Developing Look-up Table (LUT) for the soil condition class map

Checking internet connectivity for functions with remote call

comparisonTable

Normalizing decision ranking table

Assessing calcium carbonate suitability requirements for certain crops and trees

Assessing elevation suitability requirements for certain crops and trees

Deriving categorical suitability classes

Assess how well landscape features are represented in descrete samples

Assessing soil fertility suitability requirements for certain crops

Assessing erosion risk for certain crops and trees

fertilityRating

Determining soil fertility levels for given soil property (fertility indicator)

erodibilityRisk

Determine soil erodibility risk

Estimate soil erodibility factor

Harmonizing soil property between uniform depth intervals in observation pits

Assessing drainage suitability requirements for certain crops and trees

Estimate rainfall erosivity from annual rainfall amounts

Assessing soil porosity suitability requirements for certain crops and trees

Harmonization model for salt-affected soils

A grid stack map of indicators for crop fertility requirements

permeabilityClass

Determine permeability class

A function for assessing soil physical condition suitability requirements for certain crops and trees

Developing remote sensing indices for soil assessment

Correcting negative entries in classes for intenisty of salt-affected soils

A pedotransfer function to predict electrical conductivity or any other soil property using other soil properties

Sample data of decision ranking table for mapping soil nutrient condition

Guiding selection of a predition model for modelling soil properties

Re-classifying raster maps based on input look-up table

Assessing rainfall suitability requirements for certain crops and trees

A function to develop spatial map of modelling uncertainty using the bootstrap approach

Estimating slope-length factor for soil erosion

Classify types of salt-affected soils using EC, PH, and ESP

Accuracy assessment between an array of two variables

A function to classify salt intensity in soil

Assessing slope suitability requirements for certain crops and trees

Sample soil dataset for salinity mapping

Assessing stoniness suitability requirements for certain crops and trees

Determine soil suitability for agricultural crops

Assessing texture suitability requirements for certain crops and trees

Sample texture dataset for mapping soil texture

Assessing temperature suitability requirements for certain crops and trees

Generate georeferenced locations for monitoring soil conditions

Classifying salt-affected soils using EC and PH only

Sample grid stack map of nutrient indicators for crop fertility requirements

suitabilityClass

Determine suitability classes for given indicator values

Assessing Electrical Conductivity suitability requirements for certain crops and trees

Harmonizing electrical conductivity of a soil solution to that of the saturated paste extract

A function for harmonizing salt measurements into equivalent electrical conductivity in dS/m

Information on performance of soil electrical conductivity (EC) harmonization models

Assessing Length of Growing Period (LGP) suitability requirements for certain crops and trees

Assessing Exchangeable Sodium Percent (ESP) suitability requirements for certain crops and trees

Harmonizing electrical conductivity of a soil solution to that of the saturated paste extract for all textural classes

Developing own harmonization model

Assessing Cation Exchange Capacity (CEC) suitability requirements for certain crops and trees

DataAvailabilityIndex

Showing sampling point density map in a geographic area