Methodology
The Canterbury
irrigated area dataset combines different data, including:
·
farm
boundary extents (land ownership and GIS data from Land Information New
Zealand)
·
high
resolution aerial imagery and/or satellite photos
·
resource
consent data
·
analysis
of satellite data (using normalised different vegetation index (NDVI) imagery)
·
agricultural
production statistics (Statistics New Zealand).
A summary of the
methodology, and tabulated irrigated area data for the Canterbury region and
each of its ten water management zones, are found in the report: Canterbury detailed irrigated area mapping (2016). Prepared
for Environment Canterbury by Aqualinc Research Limited.
By “irrigated
area” we mean the area actually irrigated for productive gain, not the
consented area. Official Environment Canterbury Tech Report: https://api.ecan.govt.nz/TrimPublicAPI/documents/download/3010557
