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Mechanized forest harvest operations induce changes in soil physical properties, which have the potential to impact soil sustainability and forest productivity. The assessment of soil compaction and its spatial variability has been determined previously through the identification and tabulation of…
Author(s): Emily A. Carter, Timothy P. McDonald, John L. Torbert
Keywords: spatial variability, bulk density, cone index, saturation, loblolly pine, isotropic, anisotropic, GPS, harvest, skidder, feller-buncher
Source: Proceedings of the 5th International Conference on Precision Agriculture
Year: 2000
A Tigercat 845D tracked feller-buncher equipped with a shear head was evaluated while performing a clearcut in a 15-year old Loblolly pine (Pinus taeda) plantation and a 18-year old natural stand. Mean density of the plantation was 573 TPA (Trees per Acre) while the natural stand averaged 328 TPA,…
Author(s): J. Klepac
Keywords: biomass, feller-buncher, time-study, productivity, pine
Year: 2013
A study was conducted on the productivity and cost of an integrated harvesting and processing system operating in small-diameter timber (western hemlock-type) on the Olympic Peninsula of western Washington. The system uses a new steep-slope fellerbuncher, a clam-bunk grapple-skidder (forwarder), a…
Author(s): Michael B Lambert, James O. Howard
Keywords: logging, whole-tree harvesting, feller-buncher, intensive harvesting, utilization, integrated harvesting, in-woods chipping, small-tree harvesting
Source: Res. Pap. PNW-RP-430. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 44 p
Year: 1990
A conventional ground-based harvesting system was evaluated while implementing a shelterwood with reserves silvicultural prescription in a hardwood stand on the George Washington and Jefferson National Forests. The 16.3 acre study unit consisted predominately of chestnut oak (Quercus montana),…
Author(s): John Klepac, Dana Mitchell
Keywords: harvesting, hardwood harvesting, ground-based system, feller-buncher, skidder
Source: In: Proceedings of the 41st Annual Meeting of the Council on Forest Engineering: Revolutionary Traditions, Innovative Industries; July 15-18, 2018. Williamsburg, VA
Year: 2018
Concerns about population growth and the availability of conventional non-renewable sources of energy have sparked lots of emphasis for studies about renewable energies. Biomass is an alternative source of energy that can be very successful in the United States where there is a surplus of growing…
Author(s): K.D. da Rocha, Tom Gallagher, Tim McDonald, Dana Mitchell
Keywords: Small-scale forestry, feller-buncher, harvesting equipment, biomass
Source: In: Proceedings of FORMEC 2019; Exceeding the Vision: Forest Mechanisation of the Future. October 6 – 9, 2019. Sopron, Hungary
Year: 2019