Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: Long-term effects of elevated carbon dioxide concentration on sour orange wood specific gravity, modulus of elasticity, and microfibril angle

Source: Research Note FPL-RN-0307. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 9 pages.

Author(s)Kretschmann, David; Evans, James; Wiemann, Mike, Rudie, Alan; Kimball, Bruce A.; Idso, Sherwood B.

Publication Year: 2007  View PDF »

Category: Research Notes

Abstract: The carbon dioxide (CO2) concentration of Earth's atmosphere continues to rise. Plants in general are responsive to changing CO2 concentrations, which suggests changes in agricultural productivity in the United States and around the world. The ability of plants to absorb CO2 during photosynthesis and then store carbon in their structure or sequester it in the soil has potential for mitigating the rate of rise of atmospheric CO2 concentration. Since 1987, Bruce Kimball and coworkers at the USDA Agricultural Research Service in Phoenix, Arizona, have maintained a greenhouse gas experiment using sour orange trees maintained in a CO2-enriched environment. These trees were harvested in 2005. During the final massive harvest, many different properties and characteristics of the woody biomass for these sour orange trees were studied. This report focuses only on the mechanical property evaluation of modulus of elasticity (MOE), specific gravity, and microfibril angle. In this study of CO2-exposed sour orange trees, CO2 did not significantly affect specific gravity of sour orange trees. Exposure to CO2 did not significantly affect MOE of sour orange trees. Exposure to CO2 did, however, seem to influence microfibril angle development. Minor interactions between CO2 and cardinal direction affected the MOE and were caused by experimental difference in chamber construction.

Keywords: Elevated CO2 exposure, sour orange, properties, MOE, fibril angle, specific gravity

File size: 1 kb(s)

This publication is also viewable on Treesearch:  view
RITS Product ID: 602
Current FPL Scientists associated with this product (listed alphabetically)
Evans, James W.
Mathematical Statistician
Kretschmann, David E.
Research General Engineer
Wiemann, Michael C.
Botanist

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »


Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »


Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


Nanotechnology

A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »


Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »