نتایج جستجو برای: stemwood

تعداد نتایج: 77  

2015
Brad Seely Clive Welham Kim Scoullar Lucas C.R. Silva

Climate change introduces considerable uncertainty in forest management planning and outcomes, potentially undermining efforts at achieving sustainable practices. Here, we describe the development and application of the FORECAST Climate model. Constructed using a hybrid simulation approach, the model includes an explicit representation of the effect of temperature and moisture availability on t...

2012
Mauricio Acuna Perttu Anttila Lauri Sikanen Robert Prinz Antti Asikainen

Nacrtak Wood fuel quality attributes have to be considered by logistics planners if fuel procurement from forests and energy production at the plant are considered simultaneously. The single most important quality attribute is the moisture content (MC) of chips or raw material delivered to energy plants. It affects heating value, storage properties, chipping and transport costs of the fuel. To ...

2005
James D. Haywood

Mention of trade names is solely to identify materials used and does not imply endorsement by the U.S. Department of Agriculture. Discussion of herbicides in this paper does not constitute recommendation of their use or imply that uses discussed here are registered. Herbicides that are handled, applied, or disposed of improperly are a potential hazard to the applicator, off-site plants, and env...

2012
REBEKAH J. WAGNER MARGOT W. KAYE MARC D. ABRAMS PAUL J. HANSON MADHAVI MARTIN

We examined the relationship among ambient and manipulated precipitation, wood chemistry, and their relationship with radial growth for two oak species in eastern Tennessee. The study took place on the Walker Branch Throughfall Displacement Experiment (TDE) site, located at the Oak Ridge National Laboratory in Oak Ridge, TN. Two dominant species, white oak (Quercus alba) and chestnut oak (Querc...

2015
Angelica M. Garcia Villacorta Timothy A. Martin Eric J. Jokela Wendell P. Cropper Salvador A. Gezan

Loblolly pine (Pinus taeda L.) is well adapted across an extensive range of sites, is responsive to silvicultural treatments, and has undergone genetic improvement through traditional tree breeding programs, with selection based primarily on rapid growth and disease resistance. Loblolly pine clones with contrasting crown architecture provide an opportunity to better understand the mechanistic r...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Richard J Norby Joanne Ledford Carolyn D Reilly Nicole E Miller Elizabeth G O'Neill

Fine-root production and turnover are important regulators of the biogeochemical cycles of ecosystems and key components of their response to global change. We present a nearly continuous 6-year record of fine-root production and mortality from minirhizotron analysis of a closed-canopy, deciduous sweetgum forest in a free-air CO(2) enrichment experiment. Annual production of fine roots was more...

2012
SPRUCE WOOD Pingping Su Kim Granholm Andrey Pranovich Leo Harju Bjarne Holmbom Ari Ivaska

Sorption of metal ions from aqueous solutions to birch wood and spruce heartwood and sapwood has been studied. Functional groups in wood were determined by acid-base titrations. The sorption of metal ions to wood of the different tree species was investigated by a column chromatographic technique. The mechanism of sorption is mainly ion exchange by complexation of metal ions to the functional g...

2004
Johann N. Bruhn

Agroforestry values can be diversified and enhanced by capitalizing on natural associations of trees with specialty fungi. Fungi with potential agroforestry application include ectomycorrhizal as well as wood and litter decay species. Mushroom cultivation can provide profitable avenues for recycling low-value stemwood (either intact or in particle form) and in-place stump systems of harvested t...

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