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Revision of the CH4 emission inventory for enteric fermentation in the Czech Republic

Revision of the CH4 emission inventory for enteric fermentation in the Czech Republic. P. Fott ( CHMI ) , P. Hons ( Agrobio ) and Z. Mudrik ( Agricult. University ) Prague, Czech Republic. Present state of inventory (1). Key sources from agriculture in the Czechia (Tier 1)

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Revision of the CH4 emission inventory for enteric fermentation in the Czech Republic

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  1. Revision of the CH4 emission inventory for enteric fermentation in the Czech Republic P. Fott(CHMI), P. Hons (Agrobio)and Z. Mudrik(Agricult. University) Prague, Czech Republic

  2. Present state of inventory (1) • Key sources from agriculture in the Czechia (Tier 1) • Direct emissions of N2O from agriculture soils = 1. 9 % • Indirect emissions of N2O from agriculture = 1. 3 % • Enteric fermentation – CH4 (mostly from cattle) = 1. 2 % • Existing approach for enteric fermentation – an attemptto follow IPCC Tier 2 method based on older studies of Czech experts from agricultural research institutes • EF = (365 / 55.65) * daily calorific intake (MJ/day) * Y • Y …. conversion (default value = 0.06 )

  3. Present state of inventory (2) • In older Czech studies for cattle: Y = 0.08 (?) • Calculation of EF was based on direct estimate of food intake • Recent reviews undertaken by UNFCCC have revealed that these EFs are considerably lower than for other European countries: Requirement of comparability is not fulfilled

  4. Suggested approach for recalculations • IPCC Good Practice Guidance (Tier 2): • 1) Choose suitable sub-categories of cattle • 2) Collect performance data for each sub-category • 3) Calculate feed intake from animal performance data • Weight, Weight gain, Mature weight • Feeding situation (stall, pasture, grazing large areas) • Milk (daily production, % of fat in milk) • Pregnancy (% of females that give birth in year) • Feed digestibility (% energy in feed non extracted)

  5. Testing of calculating procedures • Harmony of Tier 1 and Tier 2 of the IPCC Methodology • Tier 1 default values can be obtained from Tier 2 calculation for typical sub-continental animal performance

  6. Example: Dairy Cows (data for 2001)

  7. EFs for Cows (data for 2001)

  8. Example: growing males

  9. Subcategories for calculation

  10. Subcategories in Czech statistics

  11. Resulting values of EFs for 2001

  12. Conclusions • Calculation procedures are still under development: only preliminary (non-official data) have been presented • Application of QA/QC mechanisms is necessary • How recalculate emissions estimates: • Collect statistical data for all subcategories since 1990 • Collect all agro-technical (performance) data needed for Tier 2 calculations according to IPCC Good Practice G. • For enteric fermentation of other animals (sheep etc) use Tier 1 approach using IPCC default EFs • Recalculate all data series since 1990 and do corrections in reporting all forms (CRF) submitted to UNFCC and EEA

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