Forest diagnosis involves examining, analyzing, describing, and delineating the silvicultural opportunities, limitations, and management options of a forest or stand. A forest is divided into management units including forest districts, forests, and stands. Stands are areas with similar tree species composition, size, age, and condition that can be uniformly managed. Stand typing involves classifying stands based on these characteristics. Forest inventory quantitatively assesses stands by measuring variables like tree diameter, height, and growth to inform management.

1. 5. FOREST DIAGNOSIS:
STAND, FOREST, STAND TYPING AND INVENTORY
www.medfor.eu
José Reque Kilchenmann requekch@pvs.uva.es
Prof. Silviculture (University of Valladolid)

2. Contents:
* Forestland management units
• Forest district (region)
• Forest
• Stand
P1 P2
P3 P4
Pn
Pn-2
Pn-1
Pi
* Stand typing
* Inventory

3. FOREST DIAGNOSIS:
Process of examination, analysis, description and
delimitation of the silvicultural opportunities, limitations and
management options of a forest and/or stand
www.medfor.eu

4. Forestland management units
Land Management unit Description
Forest district (region) • Regional forest surface with own
management for the purposes of
silvicultural operations and harvest
operations
Example
High Atlas
(Morroco)

5. Forestland management units
Land Management
unit
Surface and scale
Forest district (region) • Surface: > 104 ha
• Topographic Scale:
• < 1/100.000
Example
High Atlas
(Morroco)

6. Forest Tagargoust
Forest Toufliht
Land Management
unit
Description
Forest • A plant association, predominantly of trees or
other woody vegetation, defined by property
and/or topographic features such as uplands,
plateaus, valleys
• A Forest may contain 100 or more stands

7. Forest Tagargoust
Forest Toufliht
Land
Management unit
Surface and scale
Forest • Surface: [100 - 104 ha]
• Scale : [+/- 1:10.000]

8. Land
Management unit
Description
Stand • An aggregation of trees or other growth occupying
a specific area and sufficiently uniform in species
composition, size, age, arrangement, and
condition as to be distinguished from the forest or
other growth on adjoining areas.
1
2
3
4
5

9. Land Management unit Surface and scale
Stand • Surface: [1- 30 ha]; Scale: [>1:104]
1. Afforestation
2. Coppice forest
3. Shrubland
4. …
5. …
1
2
3
4
5

10. Land Management
unit
Description
Stand • The composition, structure and ecological functions within a
stand are similar enough that a forest use prescription can be
applied uniformly within the stand
1
2
3
4
5
• Normally a stand will be studied or managed as a single unit.

11. Stand typing: Description and delimitation of forest
areas that have similar conditions with respect to tree
size, species mix, structure and age.
Stand typing

12. Normalized qualitative forest description
http://docs.qgis.org/2.14/en/docs/training_manual/forestry/updating_stands.html

13. Normalized qualitative forest description : Fuel model, size,
browsing, erosion stage, species composition, regeneration, canopy
cover, stratification…)
http://docs.qgis.org/2.14/en/docs/training_manual/forestry/updating_stands.html

14. http://outreach.oregonstate.edu/programs/for
estry/node/300

15. http://docs.q
gis.org/2.14/e
n/docs/traini
ng_manual/in
dex.html
http://outreach.oregonstate.edu/pro
grams/forestry/node/300

16. Source: www.extension.oregonstate.edu;
www.uky.edu
¡Normalized description !

17. http://docs.qgis.org/2.14/en/docs/training_manual/forestry/stands_digitazing.html
www.silviweb.wikispaces.com
¡ G.I.S. !

18. Property &
legislation
Background &
history
Social &
socioeconomic
cond.
Forest conditions
Ecological
conditions
Current uses
Risks (wildfire,
erosion, pests,
overgrazing…)
Etc.
Goals and
objectives
Technological
opportunities and
limitations

19. Flickr (Adam Jones)

20. • Improve forest health
• Protect against wildfires
• Provide and improve wildlife habitat
• Develop ponds or other water sources
• Learn about or study nature
• Establish new tree plantings
• Enhance tree growth and quality in your forest
• Hunting or fishing
• Generate income from harvesting timber
• Generate income from non-timber products
• Generate income from recreational access and use
• etc
Source: Oregon’s Forest Management Plan Guidelines July 2013
• To promote and maintain desired landscape conditions
• To maintain and develop naturally reproducing forest communities
• To provide economic and social benefits through a sustained yield of
forest products
• To determine appropriate, sustainable timber harvest levels.
• To demonstrate and promote silvicultural practices that sustain ecological
and economic forest values
http://www.apps.dcnr.state.pa.us/forestry/sfrmp/silviculture.htm#guidelines

21. Forest inventory (cuantitative assessment) :
P1 P2
P3 P4
Pn
Pn-2
Pn-1
Pi
ex. Forest Toufliht: closed canopy, P. halepensis timber wood, even aged, soil
protection afforestation. Basic variable (DBH, H0, G,…)
¡Statistical design and assessment!

22. http://docs.qgis.org/2.14/en/docs/training_manual/fo
restry/index.html

23. Stand = Rodal (spanish) (cf. lat. rotālis): ww.rae.es
1. m. Lugar, sitio o espacio pequeño que por alguna
circunstancia particular se distingue de lo que le rodea.
2. m. Parte de una cosa con distinto color del general.
3. m. Conjunto de plantas que pueblan un terreno
diferenciándolo de los colindantes.
Rodalización: Stand typing
[see also: rodeo, rodear, rodar]

25. 5. FOREST DIAGNOSIS
www.medfor.eu
José Reque Kilchenmann requekch@pvs.uva.es
Prof. Silviculture (University of Valladolid)