Utility of in situ ion‐exchange membranes to assess nutrient availability, productivity, and fertilizer response of coastal Douglas‐fir of the Pacific Northwest
Sign Up to like & getrecommendations! Published in 2024 at "Soil Science Society of America Journal"
DOI: 10.1002/saj2.20654
Abstract: Douglas‐fir [Pseudotsuga menziesii (Mirb.) Franco] is the predominant forest plantation species in the Pacific Northwest (PNW), with site productivity and fertilizer response influenced by climate and soil variations. This study investigates the utility of in… read more here.
Keywords: response; fertilizer response; fertilizer; douglas fir ... See more keywords
Forest soil carbon storage in 10‐year‐old Douglas‐fir plantations of western Oregon and Washington remains similar to pre‐harvest
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DOI: 10.1002/saj2.20740
Abstract: Forests around the world, and in the case of this study, the coastal Pacific Northwest United States, store large amounts of carbon, both above ground in the trees and below ground in soils. Understanding the… read more here.
Keywords: carbon; soil carbon; soil; douglas fir ... See more keywords
Monoculture and mixture-planting of non-native Douglas fir alters species composition, but promotes the diversity of ground beetles in a temperate forest system
Sign Up to like & getrecommendations! Published in 2021 at "Biodiversity and Conservation"
DOI: 10.1007/s10531-021-02155-1
Abstract: Planting non-native tree species, like Douglas fir in temperate European forest systems, is encouraged to mitigate effects of climate change. However, Douglas fir monocultures often revealed negative effects on forest biota, while effects of mixtures… read more here.
Keywords: planting non; ground; non native; douglas fir ... See more keywords
The use of the first industrial X-ray CT scanner increases the lumber recovery value: case study on visually strength-graded Douglas-fir timber
Sign Up to like & getrecommendations! Published in 2017 at "Annals of Forest Science"
DOI: 10.1007/s13595-017-0630-5
Abstract: Key messageIndustrial computed tomography scanning of logs provides detailed information on timber quality prior to sawing. A sawing simulation—considering log rotation angle and knot size accuracy—revealed an average value increase of up to 20% for… read more here.
Keywords: strength; douglas fir; timber; scanner ... See more keywords
Production of renewable alkyl-phenols from catalytic pyrolysis of Douglas fir sawdust over biomass-derived activated carbons
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DOI: 10.1016/j.apenergy.2018.03.107
Abstract: Abstract The catalytic conversion of Douglas fir sawdust into bio-phenols on activated carbons (AC) obtained by chemical activation of corn stover with H3PO4 was investigated. Taguchi experimental design was used to optimize the preparation of… read more here.
Keywords: douglas fir; pyrolysis; biomass; catalytic pyrolysis ... See more keywords
Enhancement of bending properties of Douglas-fir and poplar laminate veneer lumber (LVL) beams with carbon and basalt fibers reinforcement
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DOI: 10.1016/j.conbuildmat.2020.120185
Abstract: Abstract This paper presents the experimental results of the bending mechanical behavior (static and dynamic moduli, and maximum stress) of LVL (Laminated Veneer Lumber) beams reinforced with fiber polymer material (FRP). Different variables were studied:… read more here.
Keywords: carbon basalt; veneer lumber; douglas fir;
Phenols production form Douglas fir catalytic pyrolysis with MgO and biomass-derived activated carbon catalysts
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DOI: 10.1016/j.energy.2020.117459
Abstract: Abstract Catalytic pyrolysis of Douglas fir with MgO and biomass-derived activated carbon catalysts (MAC) was investigated for the first time. The effects of MAC to Douglas fir ratio, experimental temperature, and MgO to activated carbon… read more here.
Keywords: douglas fir; carbon; catalytic pyrolysis; bio oil ... See more keywords
Understory vegetation dynamics 15 years post-thinning in 50-year-old Douglas-fir and Douglas-fir/western hemlock stands in western Oregon, USA
Sign Up to like & getrecommendations! Published in 2017 at "Forest Ecology and Management"
DOI: 10.1016/j.foreco.2016.11.003
Abstract: Abstract Recent trends in forest management practices designed to restore or enhance late-successional structure for habitat values typically include provisions for the creation and maintenance of structural and compositional diversity within and among stands. The… read more here.
Keywords: douglas fir; oregon usa; vegetation; douglas ... See more keywords
Mortality predictions of fire-injured large Douglas-fir and ponderosa pine in Oregon and Washington, USA
Sign Up to like & getrecommendations! Published in 2017 at "Forest Ecology and Management"
DOI: 10.1016/j.foreco.2017.01.008
Abstract: Abstract Wild and prescribed fire-induced injury to forest trees can produce immediate or delayed tree mortality but fire-injured trees can also survive. Land managers use logistic regression models that incorporate tree-injury variables to discriminate between… read more here.
Keywords: fire injured; douglas fir; ponderosa pine; mortality ... See more keywords
Light-growth responses of Sitka spruce, Douglas fir and western hemlock regeneration under continuous cover forestry
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DOI: 10.1016/j.foreco.2018.04.027
Abstract: Abstract Natural regeneration is crucial for silvicultural approaches based on the continuous presence of a forest cover, or Continuous Cover Forestry (CCF). Light is considered one of the most important factors affecting regeneration growth under… read more here.
Keywords: douglas fir; western hemlock; regeneration; sitka spruce ... See more keywords
Douglas-fir encroachment reduces drought resistance in Oregon white oak of northern California
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DOI: 10.1016/j.foreco.2021.119543
Abstract: Abstract Oregon white oak (Quercus garryana Douglas ex Hook.) is experiencing increasing competition from Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) across much of its range at the same time as climate variability is increasing, including more… read more here.
Keywords: competition; resistance; douglas fir; oregon white ... See more keywords