An experiment conducted as part of the multidisciplinary National Fire and Fire Surrogate Study was designed to determine effects of three fuel reduction techniques on small mammals and habitat structure in the southern Appalachian mountains. Four experimental units, each >14-ha were contained within each of three replicate blocks at the Green River Game Land, Polk County, NC. Treatments were (...

We report that, to enable studies of their compositional, structural and electrical properties, freestanding individual nanoobjects can be selectively felled in a controllable way by the technique of low-current focused-ion-beam (FIB) milling with the ion beam at a chosen angle of incidence to the nanoobject. To demonstrate the suitability of the technique, we report results for zigzag/straight...

THINNING overdense stands to improve growth rate of trees is one way in which the nation's supply of merchantable timber can be increased significantly.' In the Pacific Northwest alone, several million acres of such dense precommercial stands would benefit from thinning. Two basic methods are used to thin dense forest stands—felling unwanted trees with saws or killing them with chemicals. Econo...

A continuous-speed felling and bunching prototype machine was evaluated in harvesting a three-year-old, short-rotation sycamore plantation. A small tractor, grapple skidder, and large chipper were evaluated along with the prototype machine as complete harvesting systems. Prediction equations, production rates, and costs were developed for each component of the systems. Production of the feller ...

Motor-manual timber felling is one of the most dangerous operations in forest and cannot be completely replaced by fully mechanized harvesting a harvester when dealing with large deciduous trees. Shifting center gravity tree ready to felled beyond its tipping line using conventional wedges because worker directly behind stem under crown until just before falls. The can hit trunk itself, but als...

East African Blackwood is the common name for Dalbergia melanoxylon, the most valuable timber growing in the Miombo woodlands of southern Tanzania, and a potential flagship species to justify conservation of this habitat. The population density, structure and exploitation of this economically and socially important species were studied in an area of southern Tanzania. Harvestable timber was fou...

The paper analyzes the growth of Pinus sylvestris L. and koraiensis Siebold et Zucc. Bonitet, age, diameter height, density resources were determined on 11 sample plots. analysis state artificial plantations pinus sylvestris, planted from 1954 to 1980, indicates their low preservation, which after 25-40 years, depending location research object, decreases 14-25%, confirms need for expanding rec...