Felling trees, which is the basis of forestry activities, dangerous and difficult work that needs to be performed carefully. These activities can affect forest workers’ safety, damage remaining forest, or reduce value extracted product. Most accidents injuries in operations occur due trees not falling desired direction. Directional mistakes tree felling processes underestimating criteria negati...

The objects of research were forest plantations, passed through renovation rubles in the Arkhangelsk forestry region. Trial plots established spruce plantations (bilberry and sphagnum forest), on fresh haulage, apiary, old haulage after felling more than 30 years ago. Based results research, a model was built, with help which it is consistently assessed during course what happens to stand cutti...

the implementation of different silvicultural systems can be effective on different characteristics of forest stands, such as stand structure and diameter distribution of trees. this study was carried out in shafaroud forests of gilan province of northern iran. the objectives of this research were 1) to evaluate the suitability of different probability distribution functions, including weibull,...

Cain, M.D., 1991. Hardwoods on pine sites: competition or antagonistic symbiosis. For. Ecol. Manage., 44: 147-160. Early development of natural loblolly (Pinus taeda L.) and shortleaf pine (Pinus echinata Mill.) regeneration was monitored in two research studies and two research demonstrations between 1980 and I989 in southern Arkansas. Site preparation and hardwood control incorporated the use...

Forest managers have traditionally planned harvests using their expert knowledge. This applies mainly to the spatial distribution of harvest units. The amount of timber to be harvested is regulated by market demand. In addition to forest managers’ expert knowledge, there is a set of rules, which can be automatized. Computerized harvest planning will lead not only to saving time of forest manage...