Agricultural Greenhouse Gas Inventory reports

Agricultural soils

• Area of organic soils in New Zealand

Cropland and burning

• Estimating nitrous oxide emissions from cropping systems, and stubble and tussock burning
• Review of nitrous oxide emission factors and activity data for crops

Enteric fermentation

• Effect of level of intake on methane production per kg of dry matter intake
• Evaluating energy equations used by the National Enteric Methane Inventory
• Guidelines to accompany computerised inventory for ruminant methane
• Methane emissions from cattle
• Methane emissions from pregnant and lactating ewes fed different intakes of high-quality pasture
• Methane emissions from sheep fed different intakes of high-quality pasture
• Methane from ruminants using SF6 technique

Fertiliser

• Review of New Zealand specific FracGASM and FracGASF emissions factors

Forestry

• Predicting harvesting and deforestation of radiata pine forest blocks using national spatial datasets (2016)
• Material flows and end-uses of harvested wood products produced from New Zealand log exports (2016)
• Plot-based, growth performance of space-planted manuka (Leptospermum scoparium) on marginal land, and vulnerability to erosion (2016)

Indirect nitrous oxide emissions

• Nitrous oxide emissions from waterways

Livestock population and emissions

• Better estimation of national ewe and beef cow liveweights
• Emission estimations for the commercial chicken, non-chicken, and layer industries within New Zealand
• Methane emissions and nitrogen excretion rates for New Zealand goats
• Pork industry emissions inventory for New Zealand
• Poultry management in New Zealand: Production, manure management, and emission estimations
• Review of dressing out percentage in New Zealand livestock
• Review of population models within the national methane inventory (2010)

Method development

• A comparison of greenhouse gas emissions from the New Zealand dairy sector calculated using either a national or a regional approach
• Enhancing confidence in extrapolating emission measurements

Mitigation technology

• Capturing mitigation technology effects in National Agricultural Greenhouse Gas Emission Inventories
• Desktop study of emission factors for urease inhibitors for nitrogen fertiliser
• Effectiveness of policy options to reduce nitrous oxide emissions and nitrate leaching from arable and annual horticultural land uses
• Incorporation of the nitrification inhibitor DCD into New Zealand’s 2009 National Inventory
• Nitrous oxide emissions from agricultural pasture treated with nitrification inhibitors
• Reductions in FracGASM and FracGASF in the GHG inventory when urease inhibitor has been applied to the soil and with N fertiliser
• Role of inhibitors in mitigating nitrogen losses from urine and fertiliser inputs in pastures
• The effect of timing on DCD application relative to urine deposition on nitrous oxide mitigation

Model

• A review of New Zealand’s national methane inventory model
• Detailed methodologies for agricultural greenhouse gas emission calculation (2016)

Pasture renewal

• Pasture renewal activity data and factors for New Zealand

Pasture manure

• Determination of factors affecting upscaling of nitrous oxide emissions in hill country
• Determination of the N2O emission factor for animal dung applied in late autumn in 3 regions of New Zealand
• Determination of the N2O emission factor for animal dung applied in spring in 3 regions of New Zealand
• Partitioning of animal excreta N into urine and dung and developing the N2O inventory
• Refining the N2O emission factor for animal dung: Initial N2O results
• Development of a framework for estimating nitrous oxide emissions from fertiliser use on different slope pasture classes - final report (2016)

Pasture quality

• South Island dairy pasture quality

Reporting requirements

• Review of IPCC 2006 guidelines to determine New Zealand inventory requirements

Uncertainty

• Reducing uncertainty of the enteric methane emissions inventory
• Uncertainty of National Agricultural Greenhouse Gas Emission Inventories

Who to contact

If you have questions about our greenhouse gas inventory reporting, email info@mpi.govt.nz .