Home > Lifestyle > EnviroHealth > News Updated 12 June 2013 Wood not so green as a biofuel A new study finds that logging may have greater impact on carbon emissions than previously thought. 1 iStock Related Tree seeds offer potential for sustainable biofuels Hwo tress play a role in smog production CO2 removal may lower costs of climate protection Start A Health24 blog » Follow Health24 on Facebook » Test Are you envirohealth savvy? » Ask EnviroHealth Expert » Blood Lions: Bred for the Bullet movie trailer The amazing mountains on Pluto Using wood for energy is considered cleaner than fossil fuels, but a Dartmouth College-led study finds that logging may release large amounts of carbon stored in deep forest soils. The results appear in the journal Global Change Biology-Bioenergy. Global atmospheric studies often don't consider carbon in deep (or mineral) soil because it is thought to be stable and unaffected by timber harvesting. But the Dartmouth findings show deep soil can play an important role in carbon emissions in clear-cutting and other intensive forest management practices. The findings suggest that calls for an increased reliance on forest biomass be re-evaluated and that forest carbon analyses are incomplete unless they include deep soil, which stores more than 50% of the carbon in forest soils."Our paper suggests the carbon in the mineral soil may change more rapidly, and result in increases in atmospheric carbon dioxide, as a result of disturbances such as logging," said Dartmouth Professor Andrew Friedland, a co-author. Unintended effect"Our paper suggests that increased reliance on wood may have the unintended effect of increasing the transfer of carbon from the mineral soil to the atmosphere. So the intended goal of reducing carbon in the atmosphere may not be met."The federal government is looking to wood, wind, solar, hydropower and other renewable energy sources to address concerns about climate change and energy security. Woody biomass, which includes trees grown on plantations, managed natural forests and logging waste, makes up about 75% of global biofuel production. Mineral soil carbon responses can vary highly depending on harvesting intensity, surface disturbance and soil type."Analysis of forest carbon cycles is central to understanding and mitigating climate change, and understanding forest carbon cycles requires an in-depth analysis of the storage in and fluxes among different forest carbon pools, which include aboveground live and dead biomass, as well as the belowground organic soil horizon, mineral soil horizon and roots," Friedland said.Co-authors included Dartmouth's Thomas Buchholz, a former post-doctoral student, and Claire Hornig, a recent undergraduate student, and researchers from the University of Vermont, Lund University in Sweden and the Vermont Department of Forest, Parks and Recreation. The research was supported by awards to Friedland from the Northeastern States Research Cooperative and the Porter Fund.Friedland's research focuses on understanding the effects of atmospheric deposition of pollutants and biomass harvesting on elemental cycling processes in high-elevation forests in the Northeastern United States. He considers many elements including carbon, trace elements such as lead and major elements such as nitrogen and calcium. He also is examining issues related to personal choices, energy use and environmental impact. EurekAlert NEXT ON HEALTH24X Call for potential donors as Cape blood stocks run low 2017-06-20 14:59 More: EnviroHealthNews advertisement Read Health24’s Comments Policy Comment on this story 1 comment Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Medical When is it safe to take opioids? Natural Health Why are biologics so expensive? Lifestyle Your wallpaper might be making you sick Lifestyle How to communicate with your kids about nutrition Medical Legalised dagga may lead to more road accidents Medical Testicular cancer survivor: 'My testicle doubled in size' From our sponsors WIN a R2000 Skin Renewal voucher! Constipation in women SA's old diesel vehicles continue to fuel allergies Complete our allergy survey and stand a chance to win R 1000! Live healthier Choose wisely... » Healthy diet may extend kidney patients' lives Healthy diet protects teens against later weight gain Finding the right diet for you With so many fad diets out there, it’s difficult to separate fact from fiction. Dietitian Mpho Tshukudu gives advice on how to find and follow the right diet. Decor danger! » Sick building syndrome FAQ: Sick building syndrome What is sick building syndrome? Your wallpaper might be making you sick Fungus growing on wallpaper might contribute to 'sick building syndrome', causing symptoms similar to flu and allergies.