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Topic Review
Wood-based pellets in Southeastern US
Effects of pellet production on selected Sustainability Development Goals (SDGs) are evaluated using industry information, available energy consumption data, and published research findings. Challenges associated with identifying relevant SDG goals and targets for this particular bioenergy supply chain and potential deleterious impacts are discussed. We find that production of woody pellets in the SE US and shipments to displace coal for energy in Europe generate positive effects on affordable and clean energy (SDG 7), decent work and economic growth (SDG 8), industry innovation and infrastructure (SDG 9), responsible consumption and production (SDG 12), and life on land (SDG 15). Primary strengths of the pellet supply chain in the SE US are the provisioning of employment in depressed rural areas and the displacement of fossil fuels. Weaknesses are associated with potential impacts on air, water, and biodiversity that arise if the resource base and harvest activities are improperly managed. The SE US pellet supply chain provides an opportunity for transition to low-carbon industries and innovations while incentivizing better resource management.
  • 645
  • 31 Jan 2021
Topic Review
Waterlogged Archaeological Wood
Due to long-term burial in the ground or water, the plant cell walls of some wooden cultural relics were degraded by microorganisms, the structure of cell wall was loose and filled with water. The moisture content of these wooden cultural relics is much higher than that of normal wood.
  • 589
  • 21 Jun 2021
Topic Review
Tree Trunk Injection
Traditional spraying of pesticides causes significant drift losses, and the residues of pesticides can also affect non-targeted organisms in the environment. Tree injection technology is a precise and targeted pesticide delivery method used in the prevention and treatment of tree and fruit tree pest infestations. It uses the tree’s xylem to transport the injected pesticides throughout the entire plant, reducing pesticide exposure in an open environment.
  • 188
  • 29 Jan 2024
Topic Review
Tree Age Mediates Plant-Soil Relationships
The relationships between growth and soil are mediated by plant age. Stem growth and wood anatomy of 9-year-old trees and 2-year-old saplings of Enterolobium contortisiliquum, “tamboril” growing in eutrophic and oligotrophic soils were compared. Soil conditions have influenced the growth and variations in wood anatomical features.  
  • 436
  • 27 Aug 2021
Topic Review
Tracing the Timber Supply Chain
Traceability is the ability to follow the processes that a raw material or product goes through. For forestry, this means identifying the wood from the standing tree to the mill entrance and recording all information about the technical (production) and spatial (transportation) manipulation of the timber by linking it to the ID.
  • 148
  • 11 Sep 2023
Topic Review
Succession Pathways in Mixed Forests of Pacific Northwest
Forest succession is an ecological phenomenon that can span centuries. Nowadays it is recognized that stochastic events and disturbances play a pivotal role in forest succession. In spite of that, forest maps and management plans around the world are developed and focused on a unique “climax” community, likely due to the difficulty of quantifying alternative succession pathways. Our work demonstrated that a three-pathway stochastic succession model can mimic the observed landscape distribution among different stand types before commercial logging started in the region. We conclude that, while knowing the difficulty of parameterizing this type of models, their use is needed to recognize that for a given site, there may be multiple “climax” communities and hence forest management should account for them.
  • 1.5K
  • 29 Dec 2021
Topic Review
Socio-Economic Assessment of Natural Fibers
Natural fibers, which are renewable and ecologically acceptable sources of raw materials for producing environmentally friendly products, have played a significant part in human civilization. Natural fibers are desirable bio-sourced materials as an alternative to non-sustainable glass and carbon fiber reinforced composites owing to their availability and technical viability. Natural fibers have been successfully applied to a wide range of applications, for instance, furniture, automotive, electronic industries, and building construction.
  • 1.4K
  • 17 Dec 2021
Topic Review
Silvicultural Site Preparation Techniques
Silvicultural site preparation techniques are planned anthropogenic disturbances that are designed to aid in the regeneration and establishment of a new stand of trees.
  • 3.1K
  • 09 Dec 2020
Topic Review
Sesquiterpene Essential Oil from Jungia rugosa Less
As part of a project devoted to the phytochemical study of Ecuadorian biodiversity, new essential oils are systematically distilled and analysed. In the present work, Jungia rugosa Less (Asteraceae) has been selected and some wild specimens collected to investigate the volatile fraction. The essential oil, obtained from fresh leaves, was analysed for the first time in the present study. The chemical composition was determined by gas chromatography, coupled to mass spectrometry (GC-MS) for qualitative analysis, and to flame ionization detector (GC-FID) for quantitation. The calculation of relative response factors (RRF), based on combustion enthalpy, was carried out for each quantified component. Fifty-six compounds were identified and quantified in a 5% phenyl-polydimethylsiloxane non-polar column and 53 compounds in a polyethylene glycol polar column, including four undetermined compounds. The main feature of this essential oil was the exclusive sesquiterpenes content, both hydrocarbons (74.7% and 80.4%) and oxygenated (8.3% and 9.6%). Major constituents were: γ-curcumene (47.1% and 49.7%) and β-sesquiphellandrene (17.0% and 17.9%), together with two abundant undetermined oxygenated sesquiterpenes, whose abundance was 6.7–7.2% and 4.7–3.3%, respectively. 
  • 473
  • 21 Oct 2021
Topic Review
Saproxylic Beetles
Saproxylic beetles are dependent on dead wood at any stage of their own development and at any stage of wood decomposition e.g. mycetophages on wood-decay fungi. This group of saproxylic beetles has become a frequently used as a bioindicator of forest biodiversity.
  • 1.2K
  • 03 Jul 2021
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