关键词：生物质残留；湿地;生猪燃料；体积密度；生物质能
摘 要：iomass residue produced by timber harvest operations is estimated for the Olympic and Kitsap Peninsulas, Washington. Scattered residues were sampled in 53 harvest units and piled residues were completely enumerated in 55 harvest units. Production is based on 2008 and 2009 data and is stratified by forest location, ownership type, harvest intensity, and harvest method. An additional sampling was taken to ascertain the mass of wood present in a pile of biomass: 20 piles of biomass were measured for gross volume, processed into hog fuel, and remeasured for volume; five samples were drawn from each pile and examined for volume, green mass, and bone-dry mass. An equation relating mass of wood in a pile to the gross biomass volume is derived. Finally, the availability and average delivered cost per ton of biomass is calculated for five delivery centers on the Olympic Peninsula.