calc_waterstressindex {OBIC}

Calculate the Water Stress Index

Description

This function calculates the Water Stress Index (estimating the yield depression as a function of water deficiency or surplus)

Usage

calc_waterstressindex(B_HELP_WENR, B_LU_BRP, B_GWL_CLASS, WSI = "waterstress")

Arguments

B_HELP_WENR

(character) The soil type abbreviation, derived from 1:50.000 soil map

B_LU_BRP

(numeric) The crop code (gewascode) from the BRP

B_GWL_CLASS

(character) The groundwater table class

WSI

(character) The type of Water Stress Index is required. Options: droughtstress, wetnessstress and the (combined) waterstress

Value

The yield depression (in %) through wetness or drought stress (depending on the WSI selected). Numeric value.

References

STOWA (2005) Uitbreiding en Actualisering van de HELP-tabellen ten behoeve van het Waternood instrumentarium

Examples

 
calc_waterstressindex(B_HELP_WENR = 'ABkt',B_LU_BRP = 1019,B_GWL_CLASS = 'GtIV'
, WSI = 'droughtstress')