Logging history overlay of most recent harvesting activities
Anzlic ID:
ANZVI0803002521
Custodian:
Abstract:
This layer has been derived from LOG_SEASON and represents the spatial extent of the most recent timber harvesting activity recorded for any given area in State forest. Where harvest events overlap previous harvesting events the most recent harvesting event is shown.
The layer stores details of the last time an area was known to be harvested, the species harvested and the harvesting method used.
The dataset has been updated with the 2022-23 information. Complete to 30 June 2023
Search Words:
Biota
,
Farming
Publication Date:
17 November 2023
Dataset Status:
(Refer to Fire100_XY for further information)
The extent of annual records varies from one FMA to another. All FMA's should have complete records from season 199798 onwards.
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
General
Access Subject to Custodial Approval
Access Subject to Custodial Approval
Data Existence:
Metadata Name
Descriptions
Resource Name:
LASTLOG25
Title:
Logging history overlay of most recent harvesting activities
Anzlic ID:
ANZVI0803002521
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
This layer has been derived from LOG_SEASON and represents the spatial extent of the most recent timber harvesting activity recorded for any given area in State forest. Where harvest events overlap previous harvesting events the most recent harvesting event is shown.
The layer stores details of the last time an area was known to be harvested, the species harvested and the harvesting method used.
The dataset has been updated with the 2022-23 information. Complete to 30 June 2023
Search Words:
Biota
,
Farming
Purpose:
This data is derived from the LOG_SEASON dataset. The layer stores details of the last time an area of State forest was known to be harvested.
Geographic Extent Polygon:
Geographic Bounding Box:
-34
141
150
-39
Beginning to Ending Date:
1930-07-01 - 2022-06-30
Maintainence and Update Frequency:
Annually
Stored Data Format:
Available Format(s) Types:
DIGITAL - All major formats available
Positional Accuracy:
As per LOG_SEASON namely:
Precision: 10m to 100m depending on survey method used for each coupe as documented in dataset.
Determination: Comparisons to existing 1:25,000 topographic mapping and internal database consistencies. GPS sourced data may be inconsistent with existing 1:25000 map base roads and hydrology.
Attribute Accuracy:
Required to be 100% for reporting purposes. Datasets will be subjected to standard CGDL audit processes.
Logical Consistency:
As per LOG_SEASON namely:
1.LOGHISTID must be consistent with FMA, BLOCK, COMPARTMENT COUPE SEASON and SECTION.
2.COUPEADD must be consistent with FMA, BLOCK, COMPARTMENT COUPE.
3. ENDDATE cannot be earlier than STARTDATE
4. STARTDATE and ENDDATE must be consistent with logging season identifier.
5. SILVSYS cannot be inconsistent with FORESTYPE
6. FMA, BLOCK and COMPARTMENT must be consistent with data stored in the FORMB100 and FORMB25 layers.
7. FMA, BLOCK, COMPARTMENT must be consistent with data stored in FORMB100 layer.
Data Source:
Dataset Source: Derived from LOG_SEASON, which was constructed from regional logging history records. (Refer to LOG_SEASON for further information)
Dataset Originality: Derived
Contact Organisation:
DEECA
Contact Position:
Address:
Telephone:
Facsimile:
Email Address:
Metadata Date:
2023-11-20T16:55:59
Additional Metadata:
History: The current version incorporates data from the 2007/2008 season.
As this dataset is wholly derived from LOG_SEASON, attributes are the same as for the LOG_SEASON dataset with the exception of the addition of a decade item derived from the season field.
Relationship to other Datasets: This dataset is wholly derived from LOG_SEASON. LOG_SEASON is updated annually and this layer will need to be re-derived to maintain its currency.
Current Design Issues: Because this dataset is automatically derived from LOG_SEASON it has the same design issues as follows:
The current layer design has been kept as simple as possible as this layer is used at the forest district level and therefore must be commensurate with currently available resources for update, maintenance and accessibility.
The design also has to accommodate the needs of the Statewide Forest Resource Inventory (SFRI) in quantifying the start and end dates of logging events. Logging history data is an important input to periodic updates in the SFRI, where logging event data is correlated with aerial photography.
The unique polygon identifier used in this layer is LOGHISTID. This field is a composite string that comprises Forest Management Area number, forest block number, forest compartment number, coupe number, logging season identifier and coupe section number separated by slashes to make interpretation easier. The items which make up the LOGHISTID identifier are also held separately as string type items to facilitate attribute editing via ArcView.
The logging event data must be able to be linked to a variety of textual databases and spreadsheets. Some examples being LOGSALES and locally maintained spreadsheets for coupe management. The link to this external information is the field COUPEADD. This is used as the concept of a "coupe" incorporates both single and multiple polygons.
Related Documents: None
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