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5 Data integration information flows

In this data integration, data will be brought together from a variety of sources (see table 1), including the Agricultural production survey, AgriBase®, publicly available information in FarmsOnLine and property and ownership layers from Land Information New Zealand.

 Table 1

 Input databases
 Database Owner Data Requirements of access and use

Agricultural production survey

Statistics NZ and the Ministry for Primary Industries
  • Location and land details
  • Land use
  • Livestock including poultry
  • Farm practices
 Statistics Act 1975
AgriBase® AsureQuality
  • Contact details
  • Property type and size
  • Spatial property boundaries

Licensed to the Ministry for the Environment for water quality modelling and reporting.

Any products or written papers using or referring to the data will not divulge information about individual farms, or be presented in a way that can be used to infer information about an individual farm.

FarmsOnLine Ministry for Primary Industries Farms, blocks, and physical addresses Authority pursuant to section 142C(1)(b) of the Biosecurity Act 1993
Land Information New Zealand data

Land Information New Zealand

  • NZ property titles
  • NZ primary land parcels
  • NZ street address (Electoral)
  • NZ Road Centre Line (Electoral)
  • South Island Pastoral Leases

LINZ - Released under Creative Commons Attribution 3.0 NZ

Land Information New Zealand data Land Information New Zealand NZ property titles, including owners LINZ Licence For Personal Data

The data in table 1 will be integrated in several phases. Integration will occur by matching common information between each database. All personal information will be stored and accessed according to the conditions specified in the Statistics Act 1975, the Privacy Act 1993, and the Biosecurity Act 1993.

The Ministry for the Environment (MfE) and the Ministry for Primary Industries (MPI) have combined information from three databases – AgriBase®, FarmsOnLine and Land Information New Zealand data (see table 1). This integrated database contains names and addresses and spatial boundaries for each farm.

The combined data set will be imported into Statistics NZ and matched to Statistics NZ’s Agricultural production survey using the names and addresses within each dataset to produce an integrated dataset of farm location, size and production data. At this point names and addresses will be removed and replaced with a farm identifier for modelling and mapping purposes.

The output will be spatial maps of the Agricultural production survey from 1996 to 2014.

The modelling stage uses production data (eg livestock numbers and fertiliser applications) from the Agricultural production survey to estimate various outputs on each farm, including nutrient loss and waste to pasture. The mapping stage will locate a farm and its outputs onto a map alongside river, lake, and groundwater quality information.

Following completion of the modelling and mapping stages the farm’s identifier will be removed (for use in stage 3 – however, a copy with the identifier intact will be retained by Statistics NZ for potential data quality assurance) and Statistics NZ’s provisions for confidentiality applied so that no farm is recognisable in the published results. The published results will not divulge information about individual farms, or be presented in a way that can be used to infer information about an individual farm.

Statistics NZ will be the final custodian of the Agricultural production survey spatial maps and any outputs generated from modelling Agricultural production survey information. Any future use of AgriBase® will require a licence agreement with AsureQuality. Any further authority to access and use FarmsOnLine information will require approval from the Director-General, MPI. Future use of the Land Information New Zealand data will need to adhere to the LINZ Licence for Personal Data or the Creative Commons New Zealand Public Licence.

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