scholarly journals Timber harvesting on fragile ground and impacts of uncertainties in the operational costs

2021 ◽  
pp. 1-10
Author(s):  
Alex K. George ◽  
Anil Raj Kizha ◽  
Laura Kenefic
Keyword(s):  
Timber Harvesting ◽  
Operational Costs

Green Woods Model: a forecasting tool for planning timber harvesting and protection of spruce-fir forests attacked by the spruce budworm.

1985 ◽  
Author(s):  
Robert S. Seymour ◽  
Gordon D. Mott ◽  
Steven M. Kleinschmidt ◽  
Peter Triandafillou ◽  
Robert Keane
Keyword(s):  
Spruce Budworm ◽  
Timber Harvesting

Vom Forst zum Wald. Entwicklungstendenzen im naturnahen Waldbau | From a Production-Oriented Forest to a Multipurpose Forest. New Trends in Near-Natural Silviculture

1999 ◽  
Vol 150 (12) ◽  
pp. 484-488 ◽  
Author(s):  
Wolf Hockenjos
Keyword(s):  
Forest Management ◽  
Timber Harvest ◽  
Timber Harvesting ◽  
Natural Forest ◽  
The Other ◽  
Private Forest ◽  
Wide Spread ◽  
Great Demand ◽  
The Past ◽  
Forest Enterprises

Concepts of near-natural forestry are in great demand these days. Most German forest administrations and private forest enterprises attach great importance to being as «near-natural» as possible. This should allow them to make the most of biological rationalisation. The concept of near-natural forestry is widely accepted, especially by conservationists. However, it is much too early to analyse how successful near-natural forestry has been to date, and therefore to decide whether an era of genuine near-natural forest management has really begun. Despite wide-spread recognition, near-natural forestry is jeopardised by mechanised timber harvesting, and particularly by the large-timber harvester. The risk is that machines, which are currently just one element of the timber harvest will gain in importance and gradually become the decisive element. The forest would then be forced to meet the needs of machinery, not the other way round. Forests would consequently become so inhospitable that they would bear no resemblance to the sylvan image conjured up by potential visitors. This could mean taking a huge step backwards: from a near-natural forest to a forest dominated by machinery. The model of multipurpose forest management would become less viable, and the forest would become divided into areas for production, and separate areas for recreation and ecology. The consequences of technical intervention need to be carefully considered, if near-natural forestry is not to become a thing of the past.

Resources provision of woodworking industries in Ukraine: cross-national and inter-regional comparisons

2019 ◽  
pp. 145-154
Author(s):  
Svitlana Ishchuk ◽  
Lyubomyr Sozanskyy
Keyword(s):  
Raw Materials ◽  
Dynamic Assessment ◽  
Timber Harvesting ◽  
Necessary Condition ◽  
The European Union ◽  
Environmental Aspects ◽  
Fuel Wood ◽  
Significant Deterioration ◽  
The Czech Republic ◽  
Wood Processing

Sufficient supply of woodworking with raw materials while preserving the ecology and rational use of wood is a necessary condition for the functioning of the woodworking industry as one of the key segments of the national economy. The issue is of particular importance given the deepening of world integration processes and the introduction of a moratorium on timber exports from Ukraine. It actualizes the study of the state and dynamics of the formation of raw materials potential of domestic woodworks. The purpose of the article is a structural and dynamic assessment of the economic and environmental aspects of formation of the resource potential of Ukrainian woodworks in comparison with the countries of the European Union, as well as in the regional section by types of wood. In the structure of merchantable wood harvested in Ukraine, fuel wood share increased by 4.3 pp. during 2011-2016, whereas in 2017 it increased by 3.8 pp. compared to 2016 and amounted to 61.4%. Unlike in Ukraine, in the vast majority of EU countries business timber is the basis of the structure of harvested merchantable timber. Thus, in the neighboring countries with similar forest landscape – Poland and the Czech Republic – the share of fuel wood in 2017 was 11.6% and 12.3%, in Slovakia – only 6.3%, and in the EU as a whole – 23. 2%. Hence, the significant deterioration of the structure of the harvested merchantable timber in Ukraine can be interpreted as a threat to environmental, and therefore to national security. On the other hand, the results of the assessments revealed an increase in the volume of commercial timber harvesting in Ukraine (in 18 regions) in 2018, as well as in the level of forest reproduction in the leading regions from the harvesting of merchantable timber (Zhytomyr, Kyiv and Rivne regions) and a decrease in the death rate. The restoration of the logical patterns between the dynamics of the loss of stands and the harvesting of commercial and fuel wood are signs of the beginning of positive tendencies in ensuring the preservation and rationalization of raw potential of domestic woodworks and, at the same time, improving the conditions for deepening the level of wood processing. Further authors’ research in this area will be devoted to the search for effective forms of wood industry development in Ukraine, in particular in the Western region.

ArcheoIogIcaI Survey of 1993-1994 Timber Harvesting Areas, Longhorn Army Ammunition Plant, Harrison County, Texas.

1995 ◽  
Author(s):  
Maynard B. Cliff ◽  
Steven M. Hunt ◽  
Floyd Kent ◽  
Melissa M. Green ◽  
Duane E. Peter
Keyword(s):  
Timber Harvesting ◽  
Longhorn Army Ammunition Plant

An improved small sewage treatment plant for biological purification of wastewater

1994 ◽  
Vol 29 (12) ◽  
pp. 23-29 ◽  
Author(s):  
G. Voigtländer ◽  
E.-P. Kulle
Keyword(s):  
Energy Supply ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Septic Tank ◽  
Additional Energy ◽  
Anaerobic Reactor ◽  
Step Process ◽  
Operational Costs ◽  
Aerobic Reactor

The paper presents a small sewage treatment plant (package plant) operating without additional energy. Purification of sewage is achieved in a three-step process: sedimentation tank, anaerobic reactor and wastewater pond or aerobic reactor. The efficiency of the anaerobic reactor - in contrast to the efficiency of a common septic tank - is significantly increased by using fixed biomass systems. Further degradation of sewage compounds by adhering microorganisms occurs in pond or aerobic reactor. The bed for the aerobic biomass is made of a semipermeable plastic film and arranged in order to ensure simultaneous supply of oxygen. The three pilot plants are showing different results. The main aims of research i.e. lowering of operational costs, energy supply, minimizing of maintenance expenditure and cleaning work, reliability of degradation efficiency have been achieved so far for the anaerobic reactor.

scholarly journals Private Forests in Nepal: Status and Policy Analysis

2017 ◽  
Vol 15 (1) ◽  
pp. 120-130 ◽  
Author(s):  
Swoyambhu M. Amatya ◽  
Prakash Lamsal
Keyword(s):  
Present Status ◽  
National Level ◽  
Timber Harvesting ◽  
Lessons Learned ◽  
Private Land ◽  
Private Forest ◽  
Community Forest ◽  
Private Forest Owners ◽  
Forest Owners ◽  
Private Forests

 This paper reviews and analyses the present status of private forests and tenure administration in light of existing legal, policy, and regulatory frameworks in Nepal. Additionally, the present status of private forests, as well as the scenarios of timber harvesting, transportation, marketing, and their administration are thoroughly revised. Provisions regarding forests and trees on private land and their basis are examined and implications are articulated for potential policy improvements for enhanced tenure security. It is shown that robust national-level policies and legal frameworks exist, and that there is an increasing trend of timber flows to markets from private forests over the past five years. However, there is still skepticism, mistrust and fear amongst private forest owners, saw millers, and forest administration that prevents the full use of the bundle of rights that legal and policy provisions have promised. An unusually slow pace of private forest registration, lengthy and multi stage processes for obtaining harvesting and transportation permits, and official bans on important commercial species, among others, are found to be the factors that most hinder the private forest owners’ and tree growers’ interests, and their rights and obligations with respect to the management and use of their private forest resources. It is concluded that a simplified permitting process along with programmatic support would promote and help to grow private forestry and that Nepal’s experience and lessons learned from community forest implementation would be a great asset to move towards this end. Connecting community forest user groups for organised and cooperative action, and mobilising their institutional strength and accumulated funds for pro-farmer technical and regulatory support would allow farmers to intensify tree plantations and forest management. Further steps are required to convince policymakers and secure necessary budgetary support to this end..

Development of a risk-based tool for groundwater well rehabilitation and replacement decisions

2019 ◽  
Vol 68 (6) ◽  
pp. 411-419 ◽  
Author(s):  
Gamze Güngör-Demirci ◽  
Juneseok Lee ◽  
Jonathan Keck ◽  
Stephen J. Harrison ◽  
Geoffrey Bates
Keyword(s):  
Water Utilities ◽  
Risk Exposure ◽  
Decision Making Process ◽  
Business Risk ◽  
California Water ◽  
Operational Costs ◽  
Replacement Decisions ◽  
Well Rehabilitation ◽  
Hierarchy Process ◽  
Financial Regulatory

Abstract Groundwater wells are critical drinking water infrastructure elements that widely support basic system supply needs while also providing supply reliability, better water quality (in some cases), and comparatively lower operational costs. Well rehabilitation and replacement are thus an area where water utilities could benefit from rational decision support frameworks and quantitative tools that enable them to better navigate the complex trade-off relationship(s) that exist among a variety of environmental quality, public health, financial, regulatory, organizational, and technological dimensions. Consistent with these considerations, a business risk-based prioritization tool was developed for this study that augments/extends California Water Service (Cal Water)'s well rehabilitation and the replacement decision-making process. For this derivation, a business risk exposure methodology is combined with an analytical hierarchy process (AHP), with the AHP being utilized to determine the weights of the factors involved in the likelihood of failure and the consequence of failure calculation. It is expected that the new tool will assist in optimizing inspection and action plans and identify the wells requiring attention and/or additional work for water utilities.

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