Chapter 03 Answers

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Forest Management and Planning
Chapter 3. Geographic Information and Land Classification in Support of
Forest Planning
1. Strata-based land classification. Develop a strata-based land classification for the Lincoln
Tract. Use 20-year age classes of stands along with the forest vegetation type to stratify the
land areas. Develop a thematic map and a table to represent the land classification. In a
memorandum to the forest managers, describe the distribution of land classes within the
Lincoln Tract.
We will assume that students can design their own memorandum, but the table needed may
be arranged in this manner
Age
class
(years)

Vegetation class
Douglas-fir

Mixed

0-20
21-40
41-60
61-80
81-100
100+

1,851.7
1,126.5
628.8
292.3
185.7
211.3

0.0
81.7
172.5
0.0
0.0
0.0

The map may be designed such as this

2. Stand-based land classification. Develop a table describing the stands within the Putnam Tract.
Sort the table by stand age and present the results in a memorandum to the forest manager.
Take care to present the information in a professional manner. To help further understand the
condition of the forest, summarize the age class distribution of the planted and natural pine
stands.
The first table necessary to address this need might be arranged in this manner, where each
of the 81 stands would be listed:
Stand

Acres

Type

67
68
66
....

24.0
23.0
10.6

Hardwood
Hardwood
Hardwood

75
1

0.9
74.0

Pine plantation
Pine plantation

Age
70
68
67
4
2

The student would, of course, list all 81 stands here.
The age class distribution could be designed as a table or a graph, such as this one:

The Putnam tract forest age class distribution of pine stands is one which has a large number
of acres in 30-year or less pine plantations, and where most of the stands greater than 31
years of age are natural pine stands. Other than the 21-30 age class, which contains almost
700 acres, the other 10-year age classes contain between 280 and 400 acres.

3. Stand and spatial land classification. Examine the Putnam Tract stands GIS database. Some
stands in this database have very few adjacent neighbors, as defined by edges that touch,
whereas others have an extensive list of adjacent neighbors. Describe the range of adjacent
neighbors in this database. What are the characteristics of the stands that have many
adjacent neighbors?
The range of adjacent neighbors of the Putnam Tract is from 1 (stand 54) to at least 10 (stand
81). The stands that include many neighbors are those that are the larger, those that are found
in the middle of the tract, and those (perhaps) with odd shapes, such as hardwood stands
along the riparian areas.
4. Your school forest. Arrange a meeting with your school forest manager, perhaps by inviting him
or her to your class. Ask questions regarding the type of GIS databases that are used to
represent the current condition of the forest’s resources. In addition, ask questions about the
type of planning that he or she performs to facilitate the management of the forest. Does the
forest manager use one of the land classification systems described in this Chapter? If so,
how is it used to develop the management plan? What land classifications are recognized,
and how are management activities associated with each?
The answers to these questions will vary depending on who you are interviewing.

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