NT NVIS Version 4.1- National Vegetation Information System, NT 2012
An amalgamation of the NVIS version 3.1 and Northern Territory Forest Mapping, NORFOR. Data set was developed in order to align the NVISver3 data set (DEWHA) and the forest data sets sent to the National Forest Inventory (AFFA).
For information on each particular map dataset see the following records on the NT Spatial data directory.
2DBCB771207006B6E040CD9B0F274EFE NVIS - National Vegetation Information System, NT Data Compilation - Land & Vegetation Branch / Natural Systems Division
2DBCB771213506B6E040CD9B0F274EFE - Norfor - Mapping the Forest Cover of the Northern Territory - 2001
or ANZLIC numbers on ASSD
NVIS - National Vegetation Information System, NT Data Compilation - Land & Vegetation Branch / Natural Systems Division ANZNT0001001047
Norfor - Mapping the Forest Cover of the Northern Territory - 2001 ANZNT0903000039
For each survey a 'PRE1750' and an 'EXTANT" coverage was produced. The 'PRE1750' coverage or 'pre-clearing' coverage represents, in theory, the vegetation that existed in that particular survey region before the arrival of the white man. In all the surveys attributed to NVIS standard in the NT, this 'PRE1750' coverage was
taken to be the original survey coverage produced. The 'EXTANT' coverage or present day coverage represents, in theory, the present day (circa 2004) vegetation coverage. This was produced by updating the 'PRE1750' coverage with a coverage containing cleared or modified vegetation, the so called 'clearing' coverage (see comments).
NOTE: due to text limits LINEAGE continues in completeness section