نتایج جستجو برای: forestry operations

تعداد نتایج: 145536  

Journal: :Croatian journal of forest engineering 2020

Journal: :Computers & OR 2017
Amine Amrouss Nizar El Hachemi Michel Gendreau Bernard Gendron

In this paper, we present a mathematical programming model based on a timespace network representation for solving real-time transportation problems in forestry. We cover a wide range of unforeseen events that may disrupt the planned transportation operations (e.g., delays, changes in the demand and changes in the topology of the transportation network). Although each of these events has differ...

2005
CAMILLE ANTINORI DAVID BARTON BRAY

— Few examples exist in the common property literature of community-managed forestry enterprises (CFEs) operating in competitive markets. Yet, in Mexico, there are hundreds of such examples at varying levels of vertical integration. At a time when devolution of rights to forests is expanding worldwide, collective management of timber operations presents an emerging community forestry policy opt...

1997
Brian Orland Alan J. Thorn

The New Zealand Resource Management Act emphasises, among other things, the evaluation of the effects of forestry operations, and the inclusion of those affected into the decision making process. Visual images are a useful method for displaying the effects of planned forestry activities, and are easily understood by most of the general public. While the creation of fully accurate photo-realisti...

2016
Hjalmar Laudon Lenka Kuglerová Ryan A. Sponseller Martyn Futter Annika Nordin Kevin Bishop Tomas Lundmark Gustaf Egnell Anneli M. Ågren

Protecting water quality in forested regions is increasingly important as pressures from land-use, long-range transport of air pollutants, and climate change intensify. Maintaining forest industry without jeopardizing sustainability of surface water quality therefore requires new tools and approaches. Here, we show how forest management can be optimized by incorporating landscape sensitivity an...

2004
Camille Antinori David Barton Bray

Few examples exist in the common property literature of community-managed forestry enterprises (CFEs) operating in competitive markets. Yet, in Mexico there are hundreds of such examples operating at varying levels of productive and processing capability. At a time when the devolution of rights to forest resources is expanding worldwide, collective management of timber operations presents a new...

2008
Duncan Ray

Climate change is now one of the greatest global challenges, and research is underway to establish the likely impacts on all aspects of the environment. Forestry Commission Scotland has commissioned Forest Research to determine how forests and forestry in Scotland will be affected by climate change. This Research Note provides an initial synopsis of the likely impacts, with preliminary recommen...

اسلام بنیاد, امیر, توانکار, فرزام, مجنونیان, باریس,

Forest future depends on forest stands regeneration. Soil is one of the principal capitals in the forest area. It is important to minimize damages to the forest ecosystem during logging operation. In forestry and forest management, it is significant to know the effect of forest logging damages on regeneration, sapling and soil compaction. This study was carried out in Asalem Beech forest area, ...

Journal: :journal of agricultural science and technology 2014
m. aghnoum j. feghhi m. makhdoum b. jabbarian amiri

management of the forest resources and related activities has significant effects on the environment. applying the environmental impact assessment (eia) provides a basis for improving forest management plans. however, in the developing countries such as iran, there have been so far no serious endeavors and research to undertake the eia of the various practices affecting the forest resources, de...

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