Metadata : Vegetation Communities of the Southern Part of Flying Fox Station, Northern Territory

Index:


Metadata Details:

Name: AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile

Version: 1.0

Date Metadata Extracted: 2020-09-23

Date Metadata Last Updated: 2018-04-30

Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=63183794BC1B70B1E050CD9B21444778

Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=63183794BC1B70B1E050CD9B21444778


Citation

ANZLIC Identifier: 63183794BC1B70B1E050CD9B21444778

Title: Vegetation Communities of the Southern Part of Flying Fox Station, Northern Territory

Citation Date: 2018-01-19

Date Type: creation

Custodian: Department of Environment and Natural Resources


Description

Abstract:

This polygon spatial dataset provides information on vegetation communities over the southern part of Flying Fox Station, Northern Territory. This dataset is mapped at a nominal scale of 1:100,000 and covers an area of approximately 53,000 ha.

The polygon boundaries are derived from remotely sensed imagery with pixel resolution of approximately 10 m. The boundaries were created using an automated segmentation process that groups like-pixels into polygon segments. These segments were subsequently classified into vegetation community groups.

The information includes dominant strata, structural formation and floristic details, as well as a brief general description of the characteristic landscapes. The information is intended to support land management, conservation, and development planning processes at Flying Fox Station and surrounding areas.

CAUTION: Although based on detailed field information, the final dataset has not been validated. Users are advised that attribute accuracy varies over the study area.

ANZLIC Search Words:

Spatial Domain:

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Dataset Status

Dataset ID:

Language: English

Character Set: Latin 1

Progress: completed

Maintenance and Update Frequency: notPlanned

Data Currency Start Date: 2018-01-03

Data Currency End Date: 2018-01-19

Access Constraint:

Download the spatial data package (contains spatial data, maps and reports) via https://data.nt.gov.au/

You are licensed to use the DENR geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: https://creativecommons.org/licenses/by/4.0/legalcode

If you do not agree to the terms and conditions you must not use the geospatial products.

You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement:

Supplied by the Department of Environment and Natural Resources. Copyright Northern Territory Government.


Data Quality

Lineage: Vegetation map unit boundaries were derived from Landsat digital satellite imagery (February 2018), Sentinel 2 digital satellite imagery (September 2016) and derived vegetation indice models, radiometric data sourced from Geoscience Australia (2015), a digital elevation model (SRTM-derived 1 second Smoothed DEM) and derived slope and terrain classification index models, all with a pixel resolution of approximately 10 m.

Segmentation and analyses were performed in eCognition and ArcGIS to visually capture landscape features at a scale of 1:100,000. Segments were classified into vegetation map units by training a random tree classifier algorithm with typical remotely sensed signals for surveyed field sites and observations.

Descriptions of vegetation map units were based on survey data from fieldwork conducted between September 2016 and October 2017. The classification system uses the Australian Vegetation Attribute Manual: National Vegetation Information System, Version 7.0 (NVIS Technical Working Group 2017).

Positional Accuracy: Vegetation map unit boundaries were derived from an automated segmentation process of raster data at a pixel resolution of approximately 10 m. Positional accuracy is thus generally considered to be high. However positional accuracy is considerably lower where vegetation map unit boundaries are diffused (i.e. between vegetation community groups with similar structure which display similar remote sensing signals).

The final dataset is stored in the department's spatial library with geographic datum GDA94.

Attribute Accuracy: Attributes were assigned according to the dominant features of the vegetation map unit, as determined from field investigations. Attribute accuracy is considered to be high.
CAUTION: Although based on detailed field information, the final dataset has not been validated. Users are advised that attribute accuracy varies over the study area.
Attribute values, as described in the Data Dictionary below, have been joined to polygons based on their Vegetation Community Group classification.

Logical Consistency: Polygons are naturally joined without overlap or gaps because they were derived from a single surface. GIS editing tools were used to merge neighbouring regions. The final dataset is single part polygons with no overlaps or gaps. Each polygon is described.

Completeness: Complete


Contacts

NameOrganisationPositionRolePhoneFaxEmail
Data Requests OfficerDepartment of Environment and Natural ResourcesGeospatial Services Branch, Water Resources Divisiondistributordatarequests.denr@nt.gov.au

Data Dictionary

AttributeAttribute DescriptionPossible CodeCode Description
1. VEG_UNITAlias: Vegetation Map Unit
Unique identifier for each Vegetation Map Unit represented by an integer (eg VEG_UNIT 2 = Lancewood +/- Snappy Gum +/- Rusty Bloodwood low open forest).
2. VEG_COMMAlias: Vegetation Community Group
Description of the vegetation community group based on common names of dominant species and dominant stratum structure.
3. STRUC_FORMAlias: Structural Formation
NVIS Level 2 based description of the vegetation community group including the height, cover and growth form for the dominant stratum.
4. BROAD_FORMAlias: Broad Floristic Formation
NVIS Level 3 based description of the vegetation community group including the dominant genus, height, cover and growth form for the dominant stratum.
5. VU_DESC_MAlias: Vegetation Unit Description - Mid
Description of the vegetation community group MID STRATUM including the three most dominant species, height, cover and growth form.
6. VU_DESC_GAlias: Vegetation Unit Description - Ground
Description of the vegetation community group GROUND STRATUM including the three most dominant species, height, cover and growth form.
7. VU_DESC_UAlias: Vegetation Unit Description - Upper
Description of the vegetation community group UPPER STRATUM including the three most dominant species, height, cover and growth form.

Supplementary Information

Department Survey Code (Vegetation Survey): ROPVM_100

Report Bibliographic Reference: Wright A
Technical Report Number 1/2018D
Vegetation Communities of the Southern Part of Flying Fox Station, Northern Territory.
Department of Environment and Natural Resources, Northern Territory Government, Darwin, NT.

Download this report (PDF) from the Northern Territory Library via http://hdl.handle.net/10070/297827

For details about the National Vegetation Information System (NVIS) - https://www.environment.gov.au/land/native-vegetation/national-vegetation-information-system

This record maintained using the NTLIS Metadata Tool