Results 211 to 220 of about 7,247 (260)

TIMBER HARVESTER: A MICROCOMPUTER-BASED SYSTEM FOR AUTOMATIC SELECTION OF TIMBER HARVESTING EQUIPMENT

Applied Engineering in Agriculture, 1992
The potential gains that could be realized from mechanization and automation of timber harvesting are significant. Mechanization increases production output and efficiency, and product quality. However, selecting an appropriate degree of mechanization to avoid under-utilization of expensive resources is a critical decision, and requires that the ...
null S. U. Randhawa, null T. M. Scott, null E. D. Olsen   +2 more
openaire   +1 more source

Optimizing timber transportation planning for timber harvesting using bees algorithm in Malaysia

Journal of Environmental Management, 2023
Suitable extraction technique and the least cost while reducing the environmental impact is the primary concern in timber transportation planning in undulate topography. Two types of extraction machines with unique characteristics to be applied in timber harvest area in Malaysia is combined for timber harvesting with the aim each machine will extract ...
Jamhuri Jamaluddin, Norizah Kamarudin, Mohd Hasmadi Ismail, Siti Azfanizam Ahmad   +3 more
openaire   +2 more sources

Impacts of Timber Harvesting on Salamanders

Conservation Biology, 1994
The extent of the ecological impacts of clearcutting are the subject of much research and often heated debate, as recently illustrated in this journal (Duffy & Meier 1992; Duffy 1993; Elliott & Loftis 1993). Generally, arguments center around the severity of the effect on the biota and biodiversity.
Andrew N. Ash, Richard C. Bruce
openaire   +1 more source

Optimal Timber Harvest

1997
This chapter deals with renewable resources, a fixed amount of land on which timber is grown and regrown. The optimal harvest time is easy to calculate as we assume a known and consistent timber growth rate through periods of repeated timber regrowth.
Matthias Ruth, Bruce Hannon
openaire   +1 more source

Timber Harvesting with Fluctuating Prices

Forest Science, 1988
Abstract Because of volatility in demand, timber prices tend to fluctuate from year to year. Timber owners know today's price but are uncertain about tomorrow's prices. Traditional Faustmann harvesting ignores these random annual price fluctuations and prescribes harvests on the basis of expected prices.
Richard Brazee, Robert Mendelsohn
openaire   +1 more source

A timber harvesting model for Austria

Computers and Electronics in Agriculture, 2000
Between 1981 and 1985 the Austrian National Forest Inventory (ANF) established a set of 5500 clusters, each with four permanent plots covering all Austrian forests. After the first remeasurement between 1986 and 1990 models were developed to predict tree growth, mortality and the behavior of forest owners in harvesting timber.
Hubert Sterba, Michael Golser, Martin Moser, Klemens Schadauer   +3 more
openaire   +1 more source

The Effects of Harvesting on Timber Quality

South African Forestry Journal, 1988
SYNOPSIS Timber harvesting as well as timber quality are defined and discussed. The effects of harvesting on timber quality are identified for each activity in the harvesting process, namely: felling, skidding, further conversion, transport and storage.
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Analysis of the Timber Harvest

2001
As mentioned in the previous chapters it is necessary to distinguish between on- and off-reserve timber harvest in order to assess the sustainability of timber harvest in the high forest zone. This chapter attempts to combine the on- and off-reserve inventory results with the available information about the on- and off-reserve timber harvest.
openaire   +1 more source

Timber Harvest in Interior Alaska

2006
The most active period of timber harvesting in the history of Alaska’s interior occurred nearly a century ago (Roessler 1997). The beginning of this era was the year 1869, when steam-powered, stern-wheeled riverboats first operated on the Yukon River (Robe 1943).
Tricia L. Wurtz, Robert A. Ott
openaire   +1 more source

Traditional Timber Harvesting in the Central Amazonian Floodplains

2010
The science inspired awareness of the need to preserve and conserve tropical forests within the framework of protection of local and regional habitat and climate, plant and animal species and biodiversity, genetic resources and local livelihood gradually evolved over the past centuries until the issue has become one of the most important ecological and
Schöngart, J., De Queiroz, H.
openaire   +2 more sources