Claim · model-written summary
An estimated 5.1% (12 160.7 ha) of commercial forest land was occupied by root disease infection centers.
- Taxon
- commercial forest lande1
- Outcome
- infection centerse1
- Value
- 5.1% (12 160.7 ha)e1
- Setting
- Coeur d'Alene National Forest in northern Idahoe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionQualifier
Verbatim
e0“The area of root disease centers on the Coeur d'Alene National Forest in northern Idaho was effectively estimated from large-scale color infrared aerial photographs”
e1“An estimated 5.1% (12 160.7 ha) of the commercial forest land was occupied by infection centers”
Title
A system using aerial photography to estimate area of root disease centers in forests
Ralph E. Williams; C. D. Leaphart Canadian Journal of Forest Research 1978. doi:10.1139/x78-033
Other claims from this paper (6)
- Observation Root disease centers were identified in 113 of 364 surveyed stands.
- Observation Most of the 113 stands with root disease were of the Tsugaheterophylla – Pachistimamyrsinites habitat type.
- Association The highest percentage of stands with root disease was found in the Abiesgrandis – Pachistimamyrsinites habitat type.
- Association Occurrence of Pseudotsugamenziesii, Abiesgrandis, or both in a stand is the most important factor in the expression of root disease centers.
- Method / resource Accuracy of photo interpretation for root disease centers was 92%.
- Association Incorrect interpretations were associated with stands in the Abieslasiocarpa series of habitat types or with stands stocked with conifers tolerant of root pathogens.