Contacts

Identifiers and Keywords

ANZLIC Id

ANZVI0803002394 

Victorian Spatial Data Library (VSDL) Schema

FORESTS:LOG_SEASON 

Jurisdiction

Victoria 

Topic category

• Biota

Resource Constraints

Use limitation

. Access Subject to Custodial Approval 

Classification

Unclassified  

Creative Commons Attribution 4.0 (CC-BY)

• 
• License Text

Other Dataset Details

Date ( Revision )

2023-02-28

Date ( Publication )

2023-11-03T15:49:56

Status

Completed  

Purpose

This dataset provides a statewide coverage of a single season (financial year) of logging events in Victorian State forest. 

Supplemental Information

Relationship to other Datasets: The suite of layers that comprise the LOG_xxxxxx set are complied through a standard automated process into a layer called LASTLOG25. Current Design Issues: 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. Future Design Issues: The current polygon attribute table contains a forest type field FOREST_TYPE. This field may become redundant of the longer term as the SFRI datasets are completed for the State. Related Documents: Mapping Harvested Coupes: A User Guide. - This document describes procedures for mapping harvested coupes, for the purpose of updating harvesting history records. 

Maintenance and update frequency

Annually  

Maintenance date ( Publication )

2023-02-21T01:16:55

Spatial

Spatial representation type

Vector  

Description

General - Victoria 

Reference system identifier

4283

N

S

E

W

Temporal

Begin date

unknown  

End date

2022-06-30 

Resolution

Horizontal Accuracy

25m  

Quality

Conceptual Consistency

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. 

Missing Data

Data is processed and stored on an FMA basis. Extent of annual records varies from one FMA to another. All FMA's should have complete records from season 199798 onwards. 

Attribute Quality

Required to be 100% for reporting purposes. Datasets will be subjected to standard CGDL audit processes. 

Positional Accuracy

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. 

Lineage

Description

The series layers that comprise the LOG_xxxxxx suite are initially created on an FMA basis using local resources. These coverages are translated and validated using an ARC/INFO aml (LH_TRANS.AML) into the standard library data structure. A standard process (LH_PROCESS.AML) is performed as appropriate to recreate the derived layer called LASTLOG25. 

Statement

Dataset Source: This dataset is derived from 1:25,000 and 1:100,000.mapped information on logging events, aerial photography transferred to 1:25,0000 mapping and other regionally available logging records. A full list of mapping methodology sources is associated with the layer in the data field MAPLOG_SRC. Dataset Originality: Primary 

Attributes

Column Name	Obligation	Unique	Data Type	Data Length	Data Precision	Data Scale	Reference Table Owner	Reference Table Name	Reference Table Code Column Name	Short Column Name	Definition
AREASQM	O	N	NUMBER	22	38	8				AREASQM
COMPART	O	N	VARCHAR2	3						COMPART
STARTDATE	O	N	DATE	7						STARTDATE
X_FMA	O	N	VARCHAR2	30						X_FMA
X_FORETYPE	O	N	VARCHAR2	30						X_FORETYPE
COUPE_NAME	O	N	VARCHAR2	30						COUPE_NAME
SILVSYS	O	N	VARCHAR2	3						SILVSYS
COUPENO	O	N	VARCHAR2	4						COUPENO
MAPLOGSRC	O	N	VARCHAR2	2						MAPLOGSRC
SECTION_SDE	O	N	VARCHAR2	2						SECTN_SDE
ENDDATE	O	N	DATE	7						ENDDATE
LH_ID	O	N	NUMBER	22	10	0				LH_ID
FORESTYPE	O	N	VARCHAR2	3						FORESTYPE
LOGHISTID	O	N	VARCHAR2	25						LOGHISTID
HARV_ORG	O	N	VARCHAR2	7						HARV_ORG
BLOCK	O	N	VARCHAR2	3						BLOCK
HECTARES	O	N	NUMBER	22	38	8				HECTARES
X_BLOCK	O	N	VARCHAR2	25						X_BLOCK
X_SILVSYS	O	N	VARCHAR2	40						X_SILVSYS
COUPEADD	O	N	VARCHAR2	15						COUPEADD
FMA	O	N	VARCHAR2	2						FMA
SEASON	O	N	VARCHAR2	6						SEASON

About the Metadata Record

Metadata identifier

urn:uuid / 4365f2b7-93ea-531b-a673-fa4c8be640dd