Title

Forest Managment Planning Slope Classes 

Alternate title

FMA25_SLOPE 

Purpose

Forest management planning - areas exclued from harvesting due to steep slopes. Procedures developed to support Forest Management Plan Development in the Central Highlands. It should be noted that the name of the layer reflects its specific intended use, which is to delineate areas where the slope is either < 15, 15 - 25, 25-30 or > 30 degrees to support the forest mangement planning process. The layer is not intended to meet the requirements of other departmental planners who will probably have their own view of how steepness should be defined and classified. For instance in land capability slope is often dealt with in percent rise, rather than degrees. In fact, the layer will not meet all of the ultimate needs of FMB, which could include fire hazard assessment, analysis of roading costs and feasibility of high-lead logging etc etc. For these applications the DEM25 layer would be used to define steepness in the way most appropriate to the application. 

Credit

Adam Lewis, Darren McKinty 

Supplemental Information

Relationship to other Datasets: Derived from DEM25, which is derived from TOPO25. Current Design Issues: The name reflects that this layer is one interpretation of slope designed to meet the specific needs of forest management planners. Other users are likely to have different needs, and will required different slope classes and algorithms accordingly. Related Documents: None The coverage is defined by DEM25 and the procedure FMA25SLP.AML (NRS) 

Status

Obsolete  

Horizontal Accuracy

25m  

Maintenance and update frequency

As needed  

Title

DIGITAL Arc/Info Revision 7 Librarian layer 1 

Topic category

• Elevation
• Environment
• Geoscientific information

Classification

Unclassified  

Statement

Dataset Source: Derived using standard techniques developed in NRS. Derivation procedure may be reviewed to optimise the coverage. Dataset Originality: Derived 

Description

Derived from DEM25 using fma25slp.aml (NRS). DEM25 is derived from TOPO25. Slopes should only be derived from DEM25 grids which have passed validation checks. 

Classification

Unclassified  

Attribute Quality

Comments

Integer classes of slope 

Positional Accuracy

Comments

Precision: ± 15m Determination: Based on the topographic base maps Detail Smallest polygon ~ 0.25 ha 

Conceptual Consistency

Missing Data

Comments

Completed for Central Highlands, Otway FMA, Tambo FMA Completed for Central Highlands, Otway FMA, Tambo FMA 

Excess Data