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Appendix 1: Variables to be used for statistical and research purposes

The variables used in this Agricultural land database matching and data integration are:

In stage 1:

Variables sourced from the Ministry for Primary Industries’ FarmsOnLine database

  • Farms and blocks boundaries
  • Farm record ID
  • Block physical address
  • Block land use
  • Block size

Variables sourced from the Land Information New Zealand NZ Primary Parcels, Land Owners, South Island Pastoral Leases, NZ Road Centre Lines (Electoral), NZ Street Addresses (Electoral) datasets.

  • Parcel boundaries
  • Parcel ID
  • Title owner
  • Road ID
  • Address ID

Variables sourced from AgriBase® data – a product of AsureQuality (AgriBase® is licensed to the Ministry for the Environment for the specific purpose(s) of modelling and reporting on water quality and flows and the pressures on water quality and flows throughout New Zealand)

  • Farm boundaries
  • Farm ID
  • Farm type
  • Farm size
  • Station name
  • Owner name
  • Decision maker name
  • Trading name
  • Farm physical address
  • Postal address
  • Hectares used for livestock farming

Variables sourced from Statistics NZ’s Agricultural production survey (APS)

  • Legal enterprise name
  • Enterprise geounit ID
  • Enterprise ID
  • Assigned meshblock ID
  • Trading or station name
  • Dairy supply number
  • Enterprise postal address
  • Farm physical address
  • Total Land Area
  • Hectares of grassland
  • Hectares of other grazing land
  • Hectares of grain and fodder crops
  • Hectares of horticulture crops
  • Hectares of plantation forest
  • Numbers of livestock

Linked variables produced from database integration

  • AgriBase® Farm boundaries
  • LINZ primary land parcel boundaries
  • LINZ Road ID
  • LINZ Address ID
  • APS Enterprise geounit ID
  • APS Enterprise ID
  • APS Meshblock ID

In stage 2:

Variables sourced from Statistics NZ’s Agricultural production survey

  • APS Enterprise geounit ID
  • APS Enterprise ID
  • APS Meshblock ID
  • Irrigated area
  • Tonnes of fertiliser applied by fertiliser type
  • Hectares of effluent spread
  • Hectares of land use types, grazing, arable, horticulture, forestry
  • Hectares of exotic forest harvested
  • Numbers of livestock by type for dairy, beef, sheep, and deer

Variables sourced from AgriBase®

  • AgriBase® Farm ID
  • Hectares of land use types, grazing, arable, horticulture, forestry
  • Numbers of livestock by type for dairy, beef, sheep, and deer

Variables sourced from Land Information New Zealand

  • LINZ primary land parcel boundaries

Linked variables produced by modelling

  • APS Enterprise geounit ID
  • APS Enterprise ID
  • APS Meshblock ID
  • AgriBase® Farm ID
  • Phosphorus applied
  • Nitrogen applied
  • Faecal matter produced
  • Nitrate leached
  • Irrigated area
  • Harvested exotic forest area
  • LINZ primary land parcel boundaries (Parcel ID)

Modelled variables are linked to AgriBase® farm boundaries or LINZ primary land parcel boundaries and then the APS Enterprise geounit ID and AgriBase® Farm ID are removed.

In stage 3:

Variables sourced from stages 1 and 2

  • AgriBase® farm boundaries
  • LINZ primary land parcel boundaries
  • APS irrigated area
  • APS hectares of exotic forest harvested
  • Phosphorus applied
  • Nitrogen applied
  • Faecal matter produced
  • Nitrate leached

Variables published by Statistics NZ

  • Regional land use statistics

Variables sourced from NIWA

  • Measured water quality parameters including nitrogen and phosphorus concentration, E.coli concentration and water clarity
  • River flows (flow rates from mountain to sea)

Variables produced for dissemination outside Statistics NZ

  • At national and regional level only:
    • agricultural land use
    • water quality
    • changes in agricultural land use
    • changes in water quality.
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