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Filtering by: Subject Ponderosa pine Resource Type Masters Thesis Subject Ponderosa pine -- Oregon

Long-term effects of prescribed fire on nitrogen availability in ponderosa pine stands in central Oregon

Creator:

Monleon-Moscardo, Vicente J.

Abstract:

The effects of prescribed burning on the rates of recent litter decomposition, nitrogen and phosphorus release from litter, soil total and inorganic nitrogen pools, and net nitrogen mineralization were determined in ponderosa pine sites that had been burned 0.3, 5 or 12 years earlier. Prescribed burning decreased litter decomposition rates...

Resource Type:

Masters Thesis
Soil compaction in central Oregon volcanic ash soils and the subsequent effects on residual ponderosa pine growth

Creator:

Parker, Robert T.

Abstract:

Although previous research in central Oregon has shown soil compaction can lead to a decline in site productivity, the subject is not understood well enough to predict the growth changes resulting from a given level of soil compaction. A study was initiated to relate the basal area, height and volume...

Resource Type:

Masters Thesis

Full Text:

Central Oregon Volcanic Ash Soils and the Subsequent Effects on Residual Ponderosa Pine Growth
Classification strategies for unbalanced binary maps : finding Ponderosa pine in the Willamette Valley

Creator:

Riddell, Audrey P.

Abstract:

Forest species classifications are becoming increasingly automated as advances are made in machine learning. The algorithms used to identify tree species range from simple decision trees to intricate neural networks, and often excel in accurately delineating tree species. However, complex algorithms can have high input costs, including the cost of...

Resource Type:

Masters Thesis

Full Text:

25, 2018. Title: Classification strategies for unbalanced binary maps: finding Ponderosa Pine in