The paper board laminate is rolled over the slash piles by the forwarder that collected H, and serves two key roles - To make slash recovery more efficient in winter (no snow or ice jamming the piles up); and to create drier biomass. One supplier is Finland's Walki group, which among many other products makes "Wrap Energy". After seeing some of their wrap in the woods, we spoke with a Walki rep at World Bioenergy 2008. He explained that independent studies conducted in Finland show a 10 to 15% lower MC from using the wrap. The fibre sheets simply get chipped or hogged with the slash, www.walki.com.To me, rutting is a perfect example. It was unheard of and almost unseen during my first few trips to Scandinavia. The idea of riding on top of a bed of harvest slash, and thus sparing the soil, has always been a big seller of cut-to-length (CTL) harvesting on this side of the Atlantic after all. You won't sell too many CTL systems this way visiting Sweden or Finland anymore. Simply put, harvest slash has too much energy value to drive over these days, so harvester operators carefully lay it to the side, and drive on the soil and rock. The result is more rutting. So what's more pressing - global warming and replacing fossil fuels, or a few ruts here and there? I'm not saying it's an easy choice, but you'd be naive thinking it's a choice we can ignore.I think we'll work around this issue through planning, longer booms, and harvest scheduling. Other issues will prove more thorny, and the price too high, at least for now. For starters, I'll bet anyone a large draft that we won't see too many stump pullers in our woods over the next decade. It baffles the Swedes and Finns I talk to, but there's just no way we're going to fret the way we do over site disturbance and nutrient loss, and then start ripping up stumps and shaking them to loosen the dirt. Anyway, there are far too many lower hanging fruits out there to pick first.
Pages to are hidden for
"Technology to Spare"Please download to view full document