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Filtering by: Subject Conifers -- Roots -- Oregon Committee Member Maguire, Doug

Simultaneous equation estimation for individual tree growth in young Southern Oregon and Northern California conifer plantations

Creator:

Hamann, Jeff D.

Abstract:

This thesis presents methods for obtaining asymptotically efficient and consistent parameters and variance estimates for simultaneous equations in a forest growth modelling context. Ordinary Least Squares (OLS), Seemingly Unrelated Regressions (SUR), Two-Stage Least Squares (2SLS) and Three- Stage Least Squares (3SLS) are presented for linear models. The variables, model types...

Resource Type:

Masters Thesis
Effects of weed control on vegetation dynamics in Pacific Northwest conifer plantations

Creator:

Chen, Fen-Hui

Abstract:

Weed control in Pacific Northwest forests has been criticized for its potential impact on biodiversity. Changes were evaluated in conifer growth, diversity of vegetation in situ and of recruiting plants through different regeneration mechanisms after applying temporally-varied weed control by herbicide treatments based on the critical period concept. Conifer size...

Resource Type:

Dissertation