Calculate a ration component's contribution to methane (CH4) emissions from rice cultivation
Source:R/core_model_emissions_ration.R
calc_ch4_ration_rice.RdCalculates the contribution of an individual feed component to methane (CH4) emissions from rice cultivation in feed production, using feed-specific emission factors weighted by the component's share in the ration.
Arguments
- feed_ration_fraction
Numeric. Proportion of a specific feed component in the total ration, expressed as its fraction of diet dry matter intake (fraction). Within each herd_id and cohort, proportions should sum to 1.
- ch4_feed_rice
Numeric. Methane (CH4) emission factor of a feed component, representing CH4 emissions from rice cultivation in feed production, expressed per kg of dry matter intake (g CH4/kg DM).
Value
Numeric. Contribution of an individual feed component to the diet-level average methane (CH4) emission factor from rice cultivation in feed production (g CH4/kg DM).
Details
The contribution is computed as:
$$diet\_ch4\_feed\_rice = feed\_ration\_fraction \times ch4\_feed\_rice$$
This function is part of the run_emissions_ration_module().