| snippet:
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Web Service for the NVIS Major Vegetation Subgroups Extant |
| summary:
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Web Service for the NVIS Major Vegetation Subgroups Extant |
| extent:
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[[109.504355981243,-44.3186661330432],[157.215677351399,-8.13986934260101]] |
| accessInformation:
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Australian Government Department of the Environment and Energy |
| thumbnail:
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thumbnail/thumbnail.png |
| typeKeywords:
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["Data","Service","Map Service","ArcGIS Server"] |
| description:
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This raster dataset 'NVIS_AUST_EXT_ MVS_ALB' (or 'aus5_1e_mvs' in GRID format) provides the latest summary information on Australia's present (extant) native vegetation, which has been classified into Major Vegetation subgroups. It is in Albers Equal Area projection with a 100 m x 100 m (1 Ha) cell size. A comparable Pre-1750 (pre-European, pre-clearing) raster dataset is available: - 'NVIS5_1_AUST_PRE_MVS_ALB' (or 'aus5_1p_mvs' in GRID format). For this update, Version 5.1, the extant dataset for Tasmania has been updated, with gapfilling work being completed for the NSW extant dataset. Some of the rulesets underpinning the assignment of MVGs and MVSs have also been updated to improve consistency for their allocation. Version 5.0 substantially standardised the lookup tables (NVIS5_0_LUT_DETAILxxxx and NVIS5_0_LUT_AUST_FLATxxxx). For more detail refer to the associate lookup tables. Previously, Version 4.2 updated NSW. Version 4.1 most agencies supplied data to the update.
Summaries were derived from the best available data in the NVIS extant theme. This product is derived from a compilation of data collected at different scales on different dates by different organisations. Please refer to the separate Key Dataset map showing scales of the input datasets 'NVIS5_1_KEY_DSET_xxx'. Gaps in the NVIS database were filled by non-NVIS data, notably parts of South Australia and small areas of New South Wales such as the Curlewis area. The data represent on-ground dates of up to 2006 in Queensland, 2001 to 2005 in South Australia (depending on the region) and 2004/5 in other jurisdictions, except NSW. NVIS data was partially updated in NSW with 2001-09 data, with extensive areas of 1997 data remaining from the earlier version of NVIS.
Eighty-five (85) Major Vegetation Subgroups were identified for v5.1 to summarise the type and distribution of Australia's native vegetation. The classification contains an emphasis on the structural and floristic composition of the dominant stratum (as with Major Vegetation Groups), but with additional types identified according to typical shrub or ground layers occurring with a dominant tree or shrub stratum.
In a mapping sense, the subgroups reflect the dominant vegetation occurring in a map unit from a mix of several vegetation types. Less-dominant vegetation groups which are also present in the map unit are not shown. For example, the dominant vegetation in an area may be mapped as dominated by eucalypt open forest with a shrubby understorey, although it contains pockets of rainforest, shrubland and grassland vegetation as subdominants.
A number of other non-vegetation and non-native vegetation land cover types are also represented as Major Vegetation Subgroups. These are provided for cartographic purposes, but should not be used for analyses. The (related) Major Vegetation Groups represent the dominant vegetation groups in the dominant stratum and are available as separate raster datasets:
- NVIS5_1_AUST_EXT_MVG_ALB
- NVIS5_1_AUST_PRE_MVG_ALB
For further background and other NVIS products, please see the links at:
http://www.environment.gov.au/land/native-vegetation/national-vegetation-information-system |
| licenseInfo:
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| catalogPath:
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| title:
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NVIS_ext_mvs |
| type:
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Map Service |
| url:
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|
| tags:
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["NVIS","VEGETATION"] |
| culture:
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en-AU |
| name:
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NVIS_ext_mvs |
| guid:
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7C3CD29E-D203-464D-9F56-528BAFE091AC |
| spatialReference:
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WGS_1984_Web_Mercator_Auxiliary_Sphere |