SAF Geographic Information Systems 2

Question 1

Which map projection is most commonly used for large-scale forestry operations in the contiguous United States?

Accepted Answer

Albers Equal-Area Conic

Answer

Albers Equal-Area Conic preserves area relationships, making it ideal for measuring forest extent across the contiguous US.

Question 2

In a GIS forest inventory, what does a 'topology rule' primarily enforce?

Accepted Answer

Spatial relationships between features such as no gaps or overlaps

Answer

Topology rules enforce spatial integrity by ensuring features relate correctly, such as stand polygons having no gaps or overlaps.

Question 3

A forester needs to identify all stands within 300 meters of a perennial stream. Which GIS operation is most appropriate?

Accepted Answer

Buffer

Answer

A buffer operation creates a zone of specified distance around a feature, in this case 300 m around stream lines.

Question 4

What is the primary advantage of using a geodatabase over a shapefile for managing a large forest inventory?

Accepted Answer

Support for topological rules, domains, and relationship classes

Answer

Geodatabases support topological rules, attribute domains, subtypes, and relationship classes that shapefiles cannot enforce.

Question 5

When performing a spatial join in a forestry GIS, what is the key distinction between 'one-to-one' and 'one-to-many' join types?

Accepted Answer

One-to-many retains all matching records while one-to-one keeps only the first match

Answer

A one-to-many join retains all matching records from the join layer, while a one-to-one join keeps only the first (or summarized) match per target feature.

(SAF) Society of American Foresters Certification Practice Test

(SAF) Society of American Foresters Certification Practice Test

SAF Geographic Information Systems 2