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1. Quantifying tension and deflection in pre-tensioned speedlines carrying a load

Author:
Kane, Brian; Arwade, Sanjay R.
Source:
Urban forestry & urban greening 2020 v.48 pp. 126514
ISSN:
1618-8667
Subject:
logging,   etc   ; arborists; bending stress; trees;     Show all 4 Subjects
Abstract:
... Arborists use speedlines to move debris; efficiently between the tree from which the debris is generated and the landing. To maintain vertical clearance over obstacles, speedlines are pretensioned, but there are no rigorous empirical data to quantify the tension in a pretensioned speedline when it carries a load. Neither has its deflection under load been quantified. We measured the mid-span defle ...
DOI:
10.1016/j.ufug.2019.126514

2. The effect on tether tension when using trees to redirect live machine tethers during forest harvesting on steep slopes

Author:
Lyons, C. Kevin; Sessions, John D.; Wimer, Jeffrey A.
Source:
Biosystems engineering 2020 v.195 pp. 89-96
ISSN:
1537-5110
Subject:
logging,   etc   ; cutting; data collection; friction; harvesters; models; trees; wood;     Show all 8 Subjects
Abstract:
... Ground based forest harvesting machines are being used on steeper slopes with the aid of tethers to help maintain traction and stability. It is common to position a base machine containing the tether winch above the forest harvesting machine. This configuration is termed a live tether. The live tethers may be run around rub trees to reduce the time required to reposition the tether. This study dev ...
DOI:
10.1016/j.biosystemseng.2020.04.010

3. Enforcement of logging regulations in Ghana: Perspectives of frontline regulatory officers

Author:
Boakye, Joseph
Source:
Forest policy and economics 2020 v.115 pp. 102138
ISSN:
1389-9341
Subject:
logging,   etc   ; forestry law; law enforcement; politics; risk; surveys; Ghana;     Show all 7 Subjects
Abstract:
... This study examines how the state regulator enforces logging regulations with the view to understand how that influences compliance-violation behaviour of loggers in Ghana. It does so by drawing on the perspectives and experiences of fifty (50) frontline officials directly engaged in forest law enforcement in the Ashanti Region of Ghana. The study finds that the deterrent effect of the state regul ...
DOI:
10.1016/j.forpol.2020.102138

4. Challenges facing independent monitoring networks in the Indonesian timber legality assurance system

Author:
Hasyim, Zainuri; Laraswati, Dwi; Purwanto, Ris H.; Pratama, Andita A.; Maryudi, Ahmad
Source:
Forest policy and economics 2020 v.111 pp. 102025
ISSN:
1389-9341
Subject:
logging,   etc   ; forests; funding; governance; human resources; monitoring; stakeholders; Indonesia;     Show all 8 Subjects
Abstract:
... The Indonesian timber legality verification system was launched ten years ago with the objective of eradicating illegal logging and improving domestic forest governance. At the heart of the legality system, independent monitoring (IM) was designed as an innovation to ensure its credibility and legitimacy. This paper analyzes the challenges facing IM networks in the Indonesian timber legality assur ...
DOI:
10.1016/j.forpol.2019.102025

5. Do forest-management plans and FSC certification help avoid deforestation in the Congo Basin?

Author:
Tritsch, Isabelle; Le Velly, Gwenolé; Mertens, Benoit; Meyfroidt, Patrick; Sannier, Christophe; Makak, Jean-Sylvestre; Houngbedji, Kenneth
Source:
Ecological economics 2020 v.175 pp. 106660
ISSN:
0921-8009
Subject:
logging,   etc   ; basins; business enterprises; certification; deforestation; forest management; forest roads; forestry law; fuelwood;     Show all 9 Subjects
Abstract:
... To allow for the production of timber while preserving conservation values, forestry regulations in the Congo Basin have made Forest Management Plans (FMP) mandatory in logging concessions. This paper uses original high-resolution maps of forest-cover changes and official records on the activities of logging concessions to analyze the impact of FMP on deforestation in this region. We apply quasi-e ...
DOI:
10.1016/j.ecolecon.2020.106660

6. Laser-induced fluorescence logging as a high-resolution characterisation tool to assess LNAPL mobility

Author:
García-Rincón, Jonás; Gatsios, Evangelos; Rayner, John L.; McLaughlan, Robert G.; Davis, Greg B.
Source:
The Science of the total environment 2020 v.725 pp. 138480
ISSN:
0048-9697
Subject:
logging,   etc   ; aquifers; fluorescence; gasoline; hydrocarbons; models; nonaqueous phase liquids; petroleum; wavelengths; wells; Western Australia;     Show all 11 Subjects
Abstract:
... High-resolution characterisation tools such as Laser-Induced Fluorescence (LIF) logging represent a step forward towards a more effective management of sites contaminated by light non-aqueous phase liquid (LNAPL) petroleum hydrocarbons. In this paper, the applicability of LIF response as an indicator of LNAPL mobility at one site with an unconsolidated aquifer was investigated. LIF profiles were l ...
DOI:
10.1016/j.scitotenv.2020.138480

7. A new perspective to model subsurface stratigraphy in alluvial hydrogeological basins, introducing geological hierarchy and relative chronology

Author:
Zuffetti, Chiara; Comunian, Alessandro; Bersezio, Riccardo; Renard, Philippe
Source:
Computers & geosciences 2020 v.140 pp. 104506
ISSN:
0098-3004
Subject:
geophysical logging,   etc   ; algorithms; basins; cartography; computers; data collection; models; stratigraphy; uncertainty;     Show all 9 Subjects
Abstract:
... This paper presents a novel perspective for modelling alluvial stratigraphy. It integrates the spatial geological information, geological maps and well-log descriptions, with the rules describing the hierarchy and relative chronology of the geological entities. As geological modelling tools are moving fast forward, the urgent need for expert geological input, codified as modelling rules, persists. ...
DOI:
10.1016/j.cageo.2020.104506

8. Improved well log classification using semisupervised Gaussian mixture models and a new hyper-parameter selection strategy

Author:
Dunham, Michael W.; Malcolm, Alison; Welford, J. Kim
Source:
Computers & geosciences 2020 v.140 pp. 104501
ISSN:
0098-3004
Subject:
geophysical logging,   etc   ; algorithms; artificial intelligence; computers; data collection; models; oil and gas industry; standard deviation; wells;     Show all 9 Subjects
Abstract:
... Well log classification, the process of mapping well log measurements to lithofacies identified from core samples, is a common procedure in the oil and gas industry. Manually assigning lithofacies to the wire-line log measurements without core can be time consuming, and can also introduce a bias. Supervised machine learning algorithms are commonly used to automate this process, but they are prone ...
DOI:
10.1016/j.cageo.2020.104501

9. Temporal fragmentation of a critically endangered forest ecosystem

Author:
Taylor, Chris; Lindenmayer, David B.
Source:
Austral ecology 2020 v.45 no.3 pp. 340-354
ISSN:
1442-9985
Subject:
logging,   etc   ; Eucalyptus delegatensis; Eucalyptus regnans; forest ecosystems; forests; habitat fragmentation; landscapes; temporal variation;     Show all 8 Subjects
Abstract:
... Landscape change and habitat fragmentation is increasingly affecting forests worldwide. Assessments of patterns of spatial cover in forests over time can be critical as they reveal important information about landscape condition. In this study, we assessed landscape patterns across the Mountain Ash (Eucalyptus regnans) and Alpine Ash (Eucalyptus delegatensis) forests in the Central Highlands of Vi ...
DOI:
10.1111/aec.12863

10. Can protected areas buffer short-term population changes of resident bird species in a period of intensified forest harvesting?

Author:
Virkkala, Raimo; Lehikoinen, Aleksi; Rajasärkkä, Ari
Source:
Biological conservation 2020 v.244 pp. 108526
ISSN:
0006-3207
Subject:
logging,   etc   ; boreal forests; conservation areas; forest birds; global warming; land use; population dynamics; Finland;     Show all 8 Subjects
Abstract:
... Protected areas (PAs) should maintain populations of focal species, but their ability to achieve this target is affected both by land use outside PAs and by climate warming. To study effects of land use on species and ability of PAs to maintain populations of species, we compared trends in abundance of 15 resident bird species between two periods of relatively stable and increasing logging volume ...
DOI:
10.1016/j.biocon.2020.108526

11. Variability of forwarder truckload parameters in the Pryazha forestry division of the Republic of Karelia (Russia): A computer experiment

Author:
Budnik, Pavel; Shegelman, Ilya; Baklagin, Vyacheslav
Source:
Central European Forestry Journal 2020 v.66 no.1 pp. 12-22
ISSN:
2454-0358
Subject:
logging,   etc   ; Picea; computers; cutting; databases; forestry; forwarders; planning; pulpwood; sawlogs; transportation; Russia;     Show all 12 Subjects
Abstract:
... The goal of the present research is to analyze parameters of a bundle of logs for various models of forwarders in the Pryazha division of forestry of the Republic of Karelia. The investigated parameters were mass and volume of a bundle of logs, stacking factor of the bundle and the number of wood assortments in the bundle. The following models of forwarders have been investigated: John Deere 1210E ...
DOI:
10.2478/forj-2019-0027

12. Effects of selective timber harvest on amphibian species diversity in Budongo forest Reserve, Uganda

Author:
Lukwago, Wilber; Behangana, Mathias; Mwavu, Edward N.; Hughes, Daniel F.
Source:
Forest ecology and management 2020 v.458 pp. 117809
ISSN:
0378-1127
Subject:
logging,   etc   ; fences; forest management; forest reserves; forests; frogs; pitfall traps; rivers; species richness; surveys; Uganda;     Show all 11 Subjects
Abstract:
... We studied the effects of forest management on amphibian communities in the Budongo Central Forest Reserve, Uganda. We sampled amphibians from May to August of 2012 in four compartments with different logging and arboricide-treatment histories. We used pitfall traps with drift fences combined with visual encounter surveys to sample amphibians from 36 plots in four 1-km long transects along the Son ...
DOI:
10.1016/j.foreco.2019.117809

13. Regional Forest Volume Estimation by Expanding LiDAR Samples Using Multi-Sensor Satellite Data

Author:
Xie, Bo; Cao, Chunxiang; Xu, Min; Bashir, Barjeece; Singh, Ramesh P.; Huang, Zhibin; Lin, Xiaojuan
Source:
Remote Sensing 2020 v.12 no.3
ISSN:
2072-4292
Subject:
logging,   etc   ; afforestation; algorithms; ecosystem services; forest inventory; forests; lidar; models; prediction; remote sensing; sample size;     Show all 11 Subjects
Abstract:
... Accurate information regarding forest volume plays an important role in estimating afforestation, timber harvesting, and forest ecological services. Traditionally, operations on forest growing stock volume using field measurements are labor-intensive and time-consuming. Recently, remote sensing technology has emerged as a time-cost efficient method for forest inventory. In the present study, we ha ...
DOI:
10.3390/rs12030360

14. Opportunity cost of several methods for determining forest biomass terminal locations in Northern Sweden

Author:
Berg, Simon; Athanassiadis, Dimitris
Source:
International journal of forest engineering 2020 v.31 no.1 pp. 37-50
ISSN:
1913-2220
Subject:
logging,   etc   ; biomass; biorefining; forestry; forests; harvesting; industry; opportunity costs; system optimization; wood; Sweden;     Show all 11 Subjects
Abstract:
... Long distance transportation of forest biomass is often unavoidable because the biomass is dispersed over large land areas. This is a problem that limits the development of biorefineries all over the world. The use of biomass terminals where forest biomass is transported to, stored, processed (mostly by mobile machinery), and reloaded can facilitate more environmentally friendly and efficient tran ...
DOI:
10.1080/14942119.2019.1616424

15. A Single Packer Method for Characterizing Water Contributing Fractures in Crystalline Bedrock Wells

Author:
Flahive, Neil A.; Robbins, Gary A.
Source:
Ground water monitoring & remediation 2020 v.40 no.1 pp. 65-73
ISSN:
1069-3629
Subject:
logging,   etc   ; bedrock; cost effectiveness; dissolved oxygen; equations; groundwater flow; water quality; wells; Connecticut;     Show all 9 Subjects
Abstract:
... Water levels and water quality of open borehole wells in fractured bedrock are flow‐weighted averages that are a function of the hydraulic heads and transmissivities of water contributing fractures, properties that are rarely known. Without such knowledge using water levels and water quality data from fractured bedrock wells to assess groundwater flow and contaminant conditions can be highly misle ...
DOI:
10.1111/gwmr.12365

16. Does biodiversity benefit when the logging stops? An analysis of conservation risks and opportunities in active versus inactive logging concessions in Borneo

Author:
Burivalova, Zuzana; Game, Edward T.; Wahyudi, Bambang; Ruslandi,; Rifqi, Mohamad; MacDonald, Ewan; Cushman, Samuel; Voigt, Maria; Wich, Serge; Wilcove, David S.
Source:
Biological conservation 2020 v.241 pp. 108369
ISSN:
0006-3207
Subject:
logging,   etc   ; Neofelis diardi; Pongo pygmaeus; altitude; biodiversity; biodiversity conservation; deforestation; forests; remote sensing; risk; tropics; Borneo;     Show all 12 Subjects
Abstract:
... The island of Borneo is a biodiversity hotspot of global importance that continues to suffer from one of the highest deforestation rates in the tropics. Selective logging concessions overlay a third of the remaining natural forests in the Indonesian part of Borneo, but many of these concessions have become inactive in recent years. Whereas the cessation of logging could be beneficial to biodiversi ...
DOI:
10.1016/j.biocon.2019.108369

17. Investigating karst aquifers: Using pseudo 3-D electrical resistivity tomography to identify major karst features

Author:
Torrese, Patrizio
Source:
Journal of hydrology 2020 v.580 pp. 124257
ISSN:
0022-1694
Subject:
geophysical logging,   etc   ; aquifers; data collection; electrical resistance; geophysics; image analysis; karsts; models; surveys; tomography; wells; France;     Show all 12 Subjects
Abstract:
... This work presents the electrical resistivity imaging of the Hydrogeological Experimental Site (HES) karst aquifer of Poitiers (France) from pseudo three-dimensional (3-D) Electrical Resistivity Tomography (ERT), i.e., a three-dimensional model obtained from the joint inversion of resistivity data collected along parallel profiles. The inverse resistivity model provided a fairly reliable definitio ...
DOI:
10.1016/j.jhydrol.2019.124257

18. Managing moisture content during storage of logging residues at landings – Effects of coverage strategies

Author:
Eliasson, Lars; Anerud, Erik; Grönlund, Örjan; von Hofsten, Henrik
Source:
Renewable energy 2020 v.145 pp. 2510-2515
ISSN:
0960-1481
Subject:
logging,   etc   ; biomass; economic valuation; energy content; energy costs; fuelwood; insurance; profitability; supply chain; water content;     Show all 10 Subjects
Abstract:
... The use of logging residue biomass for fuel is still far from its maximum potential, due to low profitability in the supply chain caused by a low product value and high production costs. Although fuel price varies in response to demand, most of the value of forest fuel depends on its energy content, and thereby its moisture content. To maximise the economic value of the fuel, supply chains must be ...
DOI:
10.1016/j.renene.2019.07.159

19. Deadman anchoring design for cable logging: a new approach

Author:
Belart, Francisca; Leshchinsky, Ben; Wimer, Jeff
Source:
Canadian journal of forest research 2020 v.50 no.3 pp. 342-357
ISSN:
1208-6037
Subject:
logging,   etc   ; Pseudotsuga menziesii; forestry; forests; landscapes; soil; stumps; wood; United States;     Show all 9 Subjects
Abstract:
... Cable yarding is still a common system for transporting wood in steep terrain. In the Pacific Northwest, United States, and other regions of high-productivity forestry, reduced rotation ages for harvest have resulted in a lack of large stumps to serve as anchors for cable-yarding systems. One of the most common anchoring alternatives to stumps is buried deadman anchors. Conventional design of this ...
DOI:
10.1139/cjfr-2019-0338

20. Evaluation of periodicities and fractal characteristics by wavelet analysis of well log data

Author:
Song, Man-Hyok; Li, Kyong-Ho; Kim, Song-Nam
Source:
Computers & geosciences 2018 v.119 pp. 29-38
ISSN:
0098-3004
Subject:
geophysical logging,   etc   ; stratigraphy; wavelet;     Show all 3 Subjects
Abstract:
... Stratigraphic cycles are controlled by both deterministic and stochastic factors and commonly have both cyclic periodicities and fractal characteristics. A significant issue in stratigraphy is to be able both to evaluate the stochastic fractal trend and to detect periodic components such as Milankovitch cycles in stratigraphic records. In this context we propose the use of the relative wavelet spe ...
DOI:
10.1016/j.cageo.2018.05.002