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1. 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

2. Analysis of natural-production conditions for timber harvesting in European North of Russia

Author:
Shegelman, Ilya; Budnik, Pavel; Baklagin, Vyacheslav; Galaktionov, Oleg; Khyunninen, Ivan; Popov, Artem
Source:
Central European Forestry Journal 2019 v.65 no.2 pp. 81-91
ISSN:
2454-0358
Subject:
logging; logging equipment,   etc   ; cluster analysis; decision making; forest management; small businesses; Russia;     Show all 7 Subjects
Abstract:
... Natural-production conditions determine operational efficiency of logging machines. This influence needs to be taken into account at different levels of forest management. It is necessary to allocate areas with similar natural-production conditions for effective forest management. It allows simplifying the decision making process for selecting logging technology and machines. The purpose of this s ...
DOI:
10.2478/forj-2019-0006

3. Technical change and productivity growth in the Alberta logging industry

Author:
Wang, Shuo; An, Henry
Source:
Forest policy and economics 2019 v.102 pp. 130-137
ISSN:
1389-9341
Subject:
logging,   etc   ; forest management; forests; industry; issues and policy; Alberta;     Show all 6 Subjects
Abstract:
... The logging industry in Alberta, Canada is subject to some of the most stringent forest management regulations in North America. Though studies have criticized that forest management regulations in Alberta discourage innovation and hinder competi-tiveness, there is no empirical evidence on how the rate of technical change and productivity growth have evolved over time. A more detailed investigatio ...
DOI:
10.1016/j.forpol.2019.03.004

4. Thermovaporisation: A screening tool for the gas-sorptive properties of source rocks

Author:
Mahlstedt, Nicolaj; Horsfield, Brian
Source:
Organic geochemistry 2019 v.131 pp. 1-4
ISSN:
0146-6380
Subject:
logging,   etc   ; data collection; gas chromatography; methane; pyrolysis; rocks; screening; sorption;     Show all 8 Subjects
Abstract:
... We have developed a new geochemical logging method to evaluate the amount and composition of sorbed gas within source rocks quickly and inexpensively, thereby providing a practical tool for the rapid identification of “sweet spots” or heterogeneities within vertical profiles. Thermovaporisation GC-FID (Tvap) forms the basis of the screening method and can be easily run alongside Rock-Eval pyrolysi ...
DOI:
10.1016/j.orggeochem.2019.02.006

5. Post-harvesting dynamics of the deadwood profile: the case of lowland beech-oak coppice-with-standards set-aside stands in France

Author:
Larrieu, L.; Cabanettes, A.; Gouix, N.; Burnel, L.; Bouget, C.; Deconchat, M.
Source:
European journal of forest research 2019 v.138 no.2 pp. 239-251
ISSN:
1612-4669
Subject:
logging,   etc   ; coppicing; dead wood; harvesting; temperate forests; trees; wood; France;     Show all 8 Subjects
Abstract:
... In most European temperate forests, the heavy harvesting of low-quality wood for energy, a low minimum harvest diameter and a short rotation period, result in the limited deadwood resources. However, areas are being set aside in managed forests to restore deadwood levels. Coppice-with-standards is a silvicultural method characterized by periodic logging which clear-cuts coppice trees and removes s ...
DOI:
10.1007/s10342-019-01164-8

6. Influence of the operating environment on the technical efficiency of forest harvesting operations

Author:
Obi, Okey Francis; Visser, Rien
Source:
International journal of forest engineering 2017 v.28 no.3 pp. 140-147
ISSN:
1913-2220
Subject:
logging,   etc   ; databases; forests; landscapes;     Show all 4 Subjects
Abstract:
... Timber harvesting efficiency is affected by stand and terrain factors that interact with the system itself. Using an existing database of completed harvest operations that include not only productivity and costs but also system, terrain and stand factors for the period 2008–2015, this study adopts a two-stage approach to determine the influence of the operating environment on the technical efficie ...
DOI:
10.1080/14942119.2017.1357391

7. Discrete-Event Simulation of Ground-Based Timber Harvesting Operations

Author:
She, Ji; Chung, Woodam; Kim, David
Source:
Forests 2018 v.9 no.11
ISSN:
1999-4907
Subject:
logging,   etc   ; forest industries; harvesters; harvesting; models;     Show all 5 Subjects
Abstract:
... Operational studies are necessary to support production and management decisions of forest industries. A time study (TS) approach is widely used in timber harvesting operations to understand the performance of individual harvesting machines as well as the entire system. However, several limitations of the TS approach include the use of generalized utilization rates, incapability of capturing inter ...
DOI:
10.3390/f9110683

8. Instantaneous Cutting Force Variability in Chainsaws

Author:
Maciak, Adam; Kubuśka, Magda; Moskalik, Tadeusz
Source:
Forests 2018 v.9 no.10
ISSN:
1999-4907
Subject:
logging,   etc   ; Pinus; chainsaws; cutters; cutting; wood;     Show all 6 Subjects
Abstract:
... Chainsaws with chipper-type chains are widely used in timber harvesting. While existing research on such saws assumes a continuous cutting process, the objectives of the present study were to determine whether or not that is true, as well as to measure instantaneous cutting forces and active cutting time (the time during which the chainsaw cutters are actually engaged with the wood sample). Tests ...
DOI:
10.3390/f9100660

9. On Pressler’s indicator rate formula under the generalized Reed model

Author:
Susaeta, Andres
Source:
Journal of forest economics 2018 v.30 pp. 32-37
ISSN:
1104-6899
Subject:
salvage logging,   etc   ; harvesting; models; risk; wildfires;     Show all 5 Subjects
Abstract:
... We extend the Pressler’s indicator rate formula under the generalized Reed model to account for the impacts of current and future stochastic disturbance risk on the current harvesting decision. We prove that that the mathematical framework of the Pressler’s indicator rate holds under the generalized Reed model. We apply it to the management of longleaf pine to determine the optimal harvest age und ...
DOI:
10.1016/j.jfe.2017.12.002

10. Enforcing the rules in timber concessions: Performance bonding in the presence of corruption risk

Author:
Kuusela, Olli-Pekka; Amacher, Gregory S.; Moeltner, Klaus
Source:
Forest policy and economics 2017 v.85 pp. 52-64
ISSN:
1389-9341
Subject:
logging,   etc   ; capital; insurance; risk; tropics;     Show all 5 Subjects
Abstract:
... Performance bonding is a common method to enforce logging standards and timber contract rules, yet their applications in tropical concessions are still uncommon, with prohibitively high cost of capital, imperfect enforcement, risk of corruption, and long payback periods cited as reasons. In the face of these factors, we derive conditions for a feasible bond scheme and the amount of additional insu ...
DOI:
10.1016/j.forpol.2017.08.016

11. How institutions shape trust during collective action: A case study of forest governance on Haida Gwaii

Author:
Hotte, Ngaio; Kozak, Robert; Wyatt, Stephen
Source:
Forest policy and economics 2019 v.107 pp. 101921
ISSN:
1389-9341
Subject:
logging,   etc   ; case studies; cluster analysis; coasts; cohesion; collective action; empirical research; forests; governance; interviews; British Columbia;     Show all 11 Subjects
Abstract:
... Trust between actors involved in collective action can lower transaction costs, create incentives to invest in collective activities and help actors to achieve joint gains. While existing theoretical frameworks note the importance of institutions for motivating trust and the trust literature identifies characteristics of institutions that motivate trust, empirical research regarding natural resour ...
DOI:
10.1016/j.forpol.2019.05.007

12. The effect of institutional arrangements on economic performance among first nations: Evidence from forestry in BC

Author:
Nelson, Harry; Nikolakis, William; Martin-Chan, Kira
Source:
Forest policy and economics 2019 v.107 pp. 101922
ISSN:
1389-9341
Subject:
logging,   etc   ; First Nations; data collection; economic performance; economic theory; forestry; governance; harvesting; politics; British Columbia;     Show all 10 Subjects
Abstract:
... Using a unique data set constructed from timber harvesting opportunities granted or acquired by First Nations (FN) in British Columbia through different kinds of tenure agreements, we investigate what characteristics of the timber, the type of tenure and community characteristics affect harvest outcomes. We find that on average 67% of the available volume has been harvested (measured by the maximu ...
DOI:
10.1016/j.forpol.2019.05.008

13. Diversity of fungi in harvested forests 10 years after logging and burning: Polypore assemblages on different woody substrates

Author:
Suominen, Mai; Junninen, Kaisa; Kouki, Jari
Source:
Forest ecology and management 2019 v.446 pp. 63-70
ISSN:
0378-1127
Subject:
logging,   etc   ; biodiversity; clearcutting; cutting; field experimentation; forests; fungi; prescribed burning; silvicultural practices; slash; stumps; trees; wood;     Show all 13 Subjects
Abstract:
... The negative biodiversity effects of timber- and biofuel-oriented forestry practices can be alleviated by leaving retention trees and logging residues following clear-cut harvests and occasionally including prescribed burns. Such measures can potentially maintain substrates especially for dead-wood-associated species during young, post-harvest successional stages. However, the availability and tem ...
DOI:
10.1016/j.foreco.2019.05.030

14. Pre-disturbance tree size, sprouting vigour and competition drive the survival and growth of resprouting trees

Author:
Matula, Radim; Šrámek, Martin; Kvasnica, Jakub; Uherková, Barbora; Slepička, Jaroslav; Matoušková, Marie; Kutchartt, Erico; Svátek, Martin
Source:
Forest ecology and management 2019 v.446 pp. 71-79
ISSN:
0378-1127
Subject:
logging,   etc   ; canopy; coppicing; forest regeneration; forest trees; forests; harvesting; sprouting; vigor;     Show all 9 Subjects
Abstract:
... Forest trees of many species are able to recover from logging and other severe disturbances by resprouting. Due to rapid growth, sprouts often form a significant part of forest regeneration and are also a key component of coppice forests. However, there is a large variation in both resprouting success and sprout growth whose drivers are still poorly understood in forest trees. Here, we test the hy ...
DOI:
10.1016/j.foreco.2019.05.012

15. Nonstationary frequency pairing reveals a highly sensitive peak flow regime to harvesting across a wide range of return periods

Author:
Yu, XuJian Joe; Alila, Younes
Source:
Forest ecology and management 2019 v.444 pp. 187-206
ISSN:
0378-1127
Subject:
logging,   etc   ; equations; forests; frequency distribution; harvesting; hydrology; models; reforestation; snow; uncertainty; watersheds; British Columbia;     Show all 12 Subjects
Abstract:
... Decades of pairing peak flows of forested and harvested watersheds by equal chronology when evaluating the effects of forest harvesting on peak flows in paired watershed studies lately came under criticisms; and suggestions have been made to abandon the practice and pair by equal frequency instead. However, the stationarity assumption imposed by conventional frequency analyses complicates the use ...
DOI:
10.1016/j.foreco.2019.04.008

16. Canopy height recovery after selective logging in a lowland tropical rain forest

Author:
Okuda, Toshinori; Yamada, Toshiro; Hosaka, Tetsuro; Miyasaku, Naohiro; Hashim, Mazlan; Lau, Alivin Meng Shin; Saw, Leng Guan
Source:
Forest ecology and management 2019 v.442 pp. 117-123
ISSN:
0378-1127
Subject:
logging,   etc   ; canopy; canopy height; forest reserves; lidar; simulation models; tropical rain forests; Malaysia;     Show all 8 Subjects
Abstract:
... The effects of selective logging on canopy height were studied in a lowland tropical rain forest in Pasoh Forest Reserve, Peninsular Malaysia. Canopy height was measured in 2003 and 2011 by using an airborne light detection and ranging system and mapped on a 2.5-m grid over logged and primary forest plots. The logged forest plot was in an area where a selective logging operation had been conducted ...
DOI:
10.1016/j.foreco.2019.03.045

17. Primary and Secondary Branch Growth in Black Spruce and Balsam Fir after Careful Logging around Small Merchantable Stems (CLASS)

Author:
Lemay, Audrey; Krause, Cornelia; Achim, Alexis
Source:
Forests 2019 v.10 no.6
ISSN:
1999-4907
Subject:
logging,   etc   ; Abies balsamea; Picea mariana; boreal forests; branches; cutting; lumber; saplings; Quebec;     Show all 9 Subjects
Abstract:
... Careful logging around small merchantable stems (CLASS) is a partial cutting treatment that consists of the harvest of 70%–90% of the merchantable volume of an irregular coniferous stand. In this treatment, regeneration, saplings and small merchantable stems (DBH < 15 cm) are preserved and can continue to grow and develop into the dominant layer of the new stand. The aim of this project was ...
DOI:
10.3390/f10060500

18. Technology driven inequality leads to poverty and resource depletion

Author:
Mirza, M. Usman; Richter, Andries; van Nes, Egbert H.; Scheffer, Marten
Source:
Ecological economics 2019 v.160 pp. 215-226
ISSN:
0921-8009
Subject:
logging,   etc   ; ecosystem services; land degradation; models; poverty; social inequality; Bangladesh; Lake Victoria; Pakistan; Sub-Saharan Africa;     Show all 10 Subjects
Abstract:
... The rapid rise in inequality is often seen to go in-hand with resource overuse. Examples include water extraction in Pakistan, land degradation in Bangladesh, forest harvesting in Sub-Saharan Africa and industrial fishing in Lake Victoria. While access to ecosystem services provided by common pool resources mitigates poverty, exclusive access to technology by wealthy individuals may fuel excessive ...
DOI:
10.1016/j.ecolecon.2019.02.015

19. Emergency Medical Services Pre-Hospital Care Reports as a Data Source for Logging Injury Surveillance

Author:
Scott, Erika; Hirabayashi, Liane; Krupa, Nicole; Jenkins, Paul
Source:
Journal of agromedicine 2019 v.24 no.2 pp. 133-137
ISSN:
1545-0813
Subject:
logging,   etc   ; chainsaws; demographic statistics; health services; monitoring; morbidity; risk; safety equipment; trees; Maine; New Hampshire;     Show all 11 Subjects
Abstract:
... Logging workers are at high risk of injury, and although data on fatal injuries exists, less is known about non-fatal injuries. The purpose of this study is to describe initial trends in logging morbidity in Maine and New Hampshire using pre-hospital care reports. Demographics and specifics of the event were recorded for each incident case. Both quantitative and qualitative analyses were employed. ...
DOI:
10.1080/1059924X.2019.1572558

20. Injury Rate Comparisons for Nonmechanized and Mechanized Logging Operations, Washington State, 2005-2014

Author:
Bonauto, David K.; Wuellner, Sara E.; Marcum, Jennifer L.; Adams, Darrin A.
Source:
Journal of agromedicine 2019 v.24 no.2 pp. 205-214
ISSN:
1545-0813
Subject:
logging,   etc   ; confidence interval; human resources; industry; insurance; mechanization; risk; Washington (state);     Show all 8 Subjects
Abstract:
... Objectives: Current industry classification systems in the United States do not differentiate mechanized and nonmechanized logging operations. The objectives of this article are to quantify injury risk differences between mechanized and nonmechanized logging operations in Washington State and to evaluate for potential injury risk tradeoffs, such as decreasing traumatic injuries while increasing no ...
DOI:
10.1080/1059924X.2019.1566106