BACKGROUND Although significant amounts of carbon may be stored in harvested wood products, the extraction of that carbon from the forest generally entails combustion of fossil fuels. The transport of timber from the forest to primary milling facilities may in particular create emissions that reduce the net sequestration value of product carbon storage. However, attempts to quantify the effects...

Miombo woodlands are crucial to the livelihoods of rural people throughout southern, eastern and central Africa. This paper describes a dynamic simulation model of key ecological processes in miombo and examines the ecological and economic impacts of various forms of management. The model shows that removing harvestable trees and reducing the level of grazing by livestock causes an increase in ...

There has been increasing interest in managing forest stands as uneven-aged structures to promote sustainable harvests as well as maintain ecosystem services. This study provides a framework for simulating conversion of mature even-aged stands to uneven-aged slash pine (Pinus elliottii Engelm.) stands using the USDA Forest Vegetation Simulator (FVS) model. A total of 73 scenarios, representing ...

Partial cutting is required in areas where forest cover must be maintained to meet silvicultural objectives or to support non-timber values. The Okanagan has an arid climate and water quality is often a concern, requiring cut-and-leave patterns to meet hydrological considerations. Large areas of mature pine are harvested in sections (two or more passes) to meet cutblock size and green-up requir...

Timberland owners have used a number of approaches for monetizing the barelan component of their timberland without losing the right to grow and harvest timber, including, among others: selling a working-forest conservation easement, selling recreational rights, and selling the surface while retaining cutting rights. In this paper, I will address the latter approach, with an emphasis on the opp...

Most tropical forests are government-owned, with timber being harvested under concession agreements awarded to private logging companies. Those agreements tend to be short-term harvesting licenses lasting no more than one to a few years. In the absence of regulation, loggers can be expected to ignore the negative environmental impacts of logging, as they derive little or no financial gain from ...

A method is presented to improve the tool life and cutting performance of 300mm diameter tungsten carbide (WC) micro end mills by applying thin (o300nm) fine-grained diamond (FGD) and nanocrystalline diamond (NCD) coatings using the hot-filament chemical vapor deposition (HF-CVD) process. The performance of the diamond-coated tools has been evaluated by comparing their performance in dry slot m...

/ Spatially explicit models that combine remote sensing with geographic information systems (GIS) offer great promise to land managers because they consider the arrangement of landscape elements in time and space. Their visual and geographic nature facilitate the comparison of alternative landscape designs. Among various activities associated with forest management, none cause greater concern t...

Information about waste water from the manufacture offibreboard is given, and in this connection a classification of suspended and dissolved impurities occurring in the waste water of fibreboard mills is made. The influence on the concentration and the total amount of such impurities are discussed as a function of the extent of closing of the process wa ter system. Various methods of treatment ...