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wefnexus 1.0.0

Initial CRAN release

Water Module (7 functions)

• water_use_efficiency() - WUE (kg/ha/mm)
• water_productivity() - Physical and economic WP (kg/m3)
• water_footprint() - Green, blue, grey WF decomposition
• irrigation_efficiency() - Conveyance, application, overall, consumptive
• crop_water_stress_index() - CWSI bounded 0-1
• crop_water_productivity() - CWP (kg/m3) from ET
• depleted_fraction() - Basin-level water allocation metric

Energy Module (10 functions)

• energy_input() - 15-component energy input aggregation
• energy_output() - Grain + straw energy with customizable coefficients
• energy_use_efficiency() - EUE ratio
• eroi() - Energy Return on Investment with interpretation
• energy_productivity() - Yield per MJ input
• energy_intensity() - MJ per kg yield
• specific_energy() - MJ/ha/day for duration comparisons
• net_energy() - Energy balance (output minus input)
• energy_profitability() - Economic return per MJ
• human_energy_profitability() - Labour energy amplification ratio

Food Module (8 functions)

• food_productivity_index() - Composite yield-protein-calorie index
• crop_yield_index() - Relative to check treatment
• harvest_index() - Economic to biological yield ratio
• land_equivalent_ratio() - Intercropping advantage (LER)
• system_productivity_index() - Multi-crop system equivalent
• caloric_yield() - kcal/ha output
• protein_yield() - kg protein/ha
• production_efficiency_index() - Yield per unit cost

Nutrient Module (8 functions)

• agronomic_efficiency() - AE (kg yield increase/kg nutrient)
• physiological_efficiency() - PE (yield/uptake increase)
• recovery_efficiency() - RE (uptake increase/applied)
• partial_factor_productivity() - PFP (total yield/applied)
• internal_utilization_efficiency() - IUE (yield/total uptake)
• nutrient_harvest_index() - NHI (grain/total plant nutrient)
• nutrient_balance() - N-P-K input-output balance sheet
• nutrient_use_efficiency() - Comprehensive single-call NUE report

Carbon Module (7 functions)

• carbon_footprint() - Source-wise CF with IPCC AR6 GWP defaults
• carbon_efficiency() - Yield per kg CO2-eq
• carbon_sustainability_index() - CSI with sequestration offset
• ghg_emission() - N2O/CH4/CO2 estimation (IPCC Tier 1)
• soil_carbon_stock() - SOC stock (Mg C/ha)
• carbon_sequestration_rate() - Annual SOC change
• global_warming_potential() - GWP with AR6 values (100yr and 20yr)

Nexus Integration (8 functions)

• normalize_minmax() - Min-max 0-1 scaling with inverse option
• normalize_zscore() - Z-score standardization
• nexus_index() - Weighted composite WEFNC index
• nexus_tradeoff() - Correlation-based trade-off matrix
• nexus_radar() - Spider/web chart visualization
• nexus_heatmap() - Treatment x dimension heatmap
• nexus_sustainability_score() - Categorized sustainability assessment
• nexus_summary() - One-call complete nexus analysis from raw data

Dataset

• arid_pulse_nexus - 6 CA treatments x 26 variables from western Rajasthan

Technical Notes

• GWP defaults updated to IPCC AR6: CH4 = 27, N2O = 273 (100-yr)
• India-specific grid electricity EF: 0.82 kg CO2/kWh (CEA 2023)
• All functions use verbose = TRUE parameter (CRAN compliant)
• All @return tags present in documentation
• No cat()/print() outside if(verbose) blocks
• All examples executable (no \dontrun)

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.