Lunch Seminar "Is forest fuel harvesting sustainable – the role of base cation and phosphorous weathering"
<p>by <a href="http://www.nateko.lu.se/English/WPview/index.asp?ID=125" target="_blank">Cecilia Akselsson</a>,
Researcher at the Department of Earth and Ecosystem Sciences, Division
of Physical Geography and Ecosystems Analysis, Lund University.</p>
<p style="text-align: center;"><img src="http://www.slu.se/Global/externwebben/forskarskolor/focus-soils-water/FoSW_logo.jpg" alt=""></p>
| The threat of climate change
and its effects on ecosystem services and biodiversity has increased the
demand for renewable energy. Harvesting of branches, tops and stumps in
forests leads, however, to increased losses of important nutrients such
as nitrogen (N), phosphorous (P) and base cations. Although N is often
the limiting factor for forest growth in northern forest ecosystems, P
and base cations can become limiting in areas with high nitrogen
deposition (present and historical), e.g. in southwestern Sweden.
Moreover, the loss of base cations may delay recovery from
acidification, or even increase acidification. The risk of negative
effects of P and base cation losses depends on the weathering rates. In
this presentation the prerequisites for sustainable forest fuel
harvesting in different parts of Sweden are discussed along with the
role of weathering. Different methods for estimating weathering rates
are also discussed and compared. It is concluded that increased biomass
harvesting, especially in acidified areas, may lead to negative effects
mainly on runoff water. Increased biomass harvesting and maybe also a
climate more favourable for weathering may counteract this effect but
this has to be further investigated. |
Time: 2010-10-11 11:30 - 13:00
Location: Stora Loftet, Ultuna, SLU.
Organiser: Focus on Soils & Water
Last signup date: 7 October 2010
Additional info:
Register for lunch (free of charge) by e-mail to Annika Lundberg no later than 7 October 2010. Please inform if you wish vegetarian food or have any food allergies. Lunch is served at 11.30 and the seminar starts at 12.00.
Welcome!
Linnéa Berglund, Evgheni Ermolaev & Carina Ortiz