hlptabel: hlptabel: Calculate reduction in crop production caused by...

In KeesVanImmerzeel/hlptabel: Calculate Reduction In Crop Production Caused By Waterlogging And Drought

hlptabel: Calculate reduction in crop production caused by waterlogging and drought.

Description

Based on the publication "De invloed van de waterhuishouding op de landbouwkundige produktie". Rapport van de werkgroep HELP-tabel, Mededelingen Landinrichtingsdienst 176 (1987). Rapport van de werkgroep HELP-tabel

Details

Approximate analytical formulas are used to calculate the reduction in crop productions.

The following functions are exported:

• ht_reduction: Calculate reduction in crop production caused by waterlogging and drought.

• ht_reduction_brk: Calculate reduction in crop production caused by waterlogging and drought using a SpatRaster object as input.

• ht_tab_calc_values: Tabulated and calculated reductions in crop production.

• ht_plot_tab_calc_values: Plot of tabulated and calculated reductions in crop production.

The following datasets are included in the package:

• HELP_map_NL2020: HELP map of the Netherlands based on the Bofek2020 map.

• landuse_map_NL2021: Landuse map of the Netherlands based on the top25raster map.

To use these datasets, the following code can be used:

• HELP_map_NL2020 <- file.path( find.package("hlptabel"), "extdata", "HELP_map_NL2020.tif") |> terra::rast()

• landuse_map_NL2021 <- file.path( find.package("hlptabel"), "extdata", "landuse_map_NL2021.tif") |> terra::rast()

You might consider to reclassify the HELP numbers 71 and 72 to the most similar soil codes in the HELP-table (1987). HELP-2005 Stowa rapport 2005/16 (page 16) HELP number 71 –> 67; HELP number 72 –> 60. Dataset HELP_map_NL2020 is already converted in this way.

KeesVanImmerzeel/hlptabel documentation built on Jan. 9, 2025, 5:32 p.m.