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Creator:: Shemwetta, Dunstan T. K.
Abstract:: Plantation forests on mountainous areas in Tanzania, East Africa, were successfully established in the 1950's. Harvesting started in the 1970's to meet increased national timber demand. Current problems of unharvested areas and potential environmental degradation are associated with uncontrolled harvests, mismatch of harvest systems to site needs, and post-harvest practices....
Resource Type:: Dissertation

Creator:: DiFazio, Stephen P.
Abstract:: Hybrid poplar plantations (Populus trichocarpa x Populus deltoides) are a relatively new feature on the landscape in the Pacific Northwest of the United States, and these plantations may soon include genetically engineered trees. Meanwhile, many wild poplar populations (Populus spp.) are highly degraded due in part to logging, dams, grazing,...
Resource Type:: Dissertation

Creator:: Hanson, Thomas J. (Thomas Jeffrey)
Abstract:: Southwest Oregon presents an environment of hot dry summers, cool moist winters, and rocky, shallow soils. The establishment of conifer plantations in this region presents challenging problems for initial seedling survival and subsequent growth. Three areas of concern include early conifer growth after seedling establishment, growth of competing hardwoods within...
Resource Type:: Dissertation

Creator:: Vasquez Sandoval, Marcia A.
Abstract:: A Life Cycle Assessment (LCA) of the production of poplar biomass grown under four management conditions in the Pacific Northwest (PNW) of the U.S.A. was conducted. While the extraction of fossil fuels and the subsequent generation of energy have environmental impacts, the alternative of extracting poplar biomass also has impacts...
Resource Type:: Dissertation
Full Text:: (consultant) from MWMC and Biocycle Tree Farm; and Jeff O’Leary and Bill Mason from Riverbend Landfill. I

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