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wefnexus

Overview

wefnexus provides a comprehensive toolkit for analyzing Water-Energy-Food-Nutrient-Carbon (WEFNC) nexus interactions in agricultural production systems. It includes 68 functions across 6 modules with a nexus integration layer.

Installation

Install from CRAN:

install.packages("wefnexus")

Modules

Module	Functions	Key Metrics
Water	11	WUE, WP, WF (green/blue/grey), CWSI, CWP, RUE, IWP, WSI
Energy	14	EUE, EROI (standard + extended), EP, EI, NER, REF, energy budget
Food	12	FPI, HI, LER, SPI, SYI, nutritional yield, BCR
Nutrient	11	AE, PE, RE, PFP, IUE, NHI, N surplus, SNI
Carbon	10	CF, GHG, SOC, GWP (IPCC AR6), CEI, NECB
Nexus	10	Composite index, trade-off matrix, sensitivity, radar, heatmap

Quick Example

library(wefnexus)
data(arid_pulse_nexus)
d <- arid_pulse_nexus

# Compute EROI with extended analysis
e_out <- d$energy_output_grain + d$energy_output_straw
eroi(energy_out = e_out, energy_in = d$energy_input)

# Full nexus summary
nexus_summary(
  yield = d$grain_yield,
  water_consumed = d$total_water,
  energy_input = d$energy_input,
  energy_output = e_out,
  n_applied = d$n_applied,
  n_uptake = d$n_uptake,
  carbon_emission = d$ghg_emission,
  treatment_names = d$treatment
)

Key Features

68 functions across 6 integrated modules
EROI with standard, extended, and Net Energy Ratio analysis
IPCC AR6 GWP defaults: CH4 = 27, N2O = 273 (100-yr horizon)
Nutritional yield analysis (protein, Fe, Zn, persons fed)
Nexus sensitivity analysis for weight perturbation assessment
Conservation agriculture focus (CT/ZT/PB comparisons)
Arid and semi-arid environment emphasis
CRAN-ready: verbose parameter, proper documentation
Base R graphics: zero external plotting dependencies

Citation

Rolaniya, L.K., Poonia, H., Jat, R.L., Punia, M. & Choudhary, R.R. (2026).
wefnexus: Water-Energy-Food-Nutrient-Carbon Nexus Analysis for Agronomic
Systems. R package version 1.0.0. https://CRAN.R-project.org/package=wefnexus

License

GPL (>= 3)

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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