Results 91 to 100 of about 10,548 (206)

Modeling Sub‐Grid Peatland Vegetation Dynamics in the ORCHIDEE‐PEAT Land Surface Model

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract Peatlands store about one‐third of total global soil carbon. Vegetation composition strongly regulates peatland carbon dynamics. Global warming and climate‐driven ecohydrological changes are expected to alter peatland vegetation composition, necessitating accurate simulation of vegetation dynamics to predict future fate of peatland carbon.
Chunjing Qiu   +27 more
wiley   +1 more source

The influence of heartwood, sapwood and density on moisture fluctuations and crack formations of coated Norway spruce in outdoor exposure

open access: yesJournal of Wood Science, 2019
The moisture sorption behaviour of wood strongly influences the durability of exterior-coated wood. Wood characteristics are known to influence the water sorption of uncoated wood.
T. Sjökvist   +2 more
doaj   +1 more source

A specific case in the classification of woods by FTIR and chemometric: discrimination of Fagales from Malpighiales [PDF]

open access: yes, 2014
Fourier transform infrared (FTIR) spectroscopic data was used to classify wood samples from nine species within the Fagales and Malpighiales using a range of multivariate statistical methods. Taxonomic classification of the family Fagaceae and Betulaceae
A Hobro   +48 more
core   +1 more source

The Pathogenic White-Rot Fungus Heterobasidion parviporum Responds to Spruce Xylem Defense by Enhanced Production of Oxalic Acid

open access: yesMolecular Plant-Microbe Interactions, 2012
Pathogen challenge of tree sapwood induces the formation of reaction zones with antimicrobial properties such as elevated pH and cation content. Many fungi lower substrate pH by secreting oxalic acid, its conjugate base oxalate being a reductant as well ...
Nina Elisabeth Nagy   +6 more
doaj   +1 more source

Heartwood formation and prediction of heartwood parameters in Tectona grandis L.f. trees growing in forest plantations in Costa Rica

open access: yesBOIS & FORETS DES TROPIQUES, 2018
The aim of this study was to establish variations in heartwood (percentage, diameter, radius, volume) in relation to tree height and sapwood thickness. The age at which heartwood formation begins and the maximum heartwood height in Tectona grandis trees were also investigated. Samples were taken from sixteen plantations in different zones of Costa Rica,
David Fernández-Sólis   +2 more
openaire   +2 more sources

Asymptotic and numerical analysis of a porous medium model for transpiration-driven sap flow in trees

open access: yes, 2017
We develop a 3D porous medium model for sap flow within a tree stem, which consists of a nonlinear parabolic partial differential equation with a suitable transpiration source term. Using an asymptotic analysis, we derive approximate series solutions for
Janbek, Bebart Maisar, Stockie, John M.
core  

Mass production and quality control of teak clones for tropical plantations : the Yayasan Sabah Group and CIRAD joint project as a case study [PDF]

open access: yes, 2007
L'attrait pour des clones de teck qui peuvent être plantés sous forme monospécifique ou en association avec d'autres espèces végétales (agroforesterie) devient de plus en plus évident dans de nombreux pays.
Baillères, Henri   +3 more
core  

Assessment of wood microstructural changes after one-stage thermo-hydro treatment (THT) by micro X-ray computed tomography [PDF]

open access: yes, 2015
The microstructural changes in a selection of softwoods and hardwoods resulting from thermo-hydro treatment (THT) at 160°C were examined by means of a state-of-the-art micro X-ray computed tomography.
Andersone, Ingeborga   +7 more
core   +2 more sources

What causes natural durability in Eucalyptus bosistoana timber? [PDF]

open access: yes, 2008
This study investigated the natural durability of 8 and 60 year old Eucalyptus bosistoana (coast grey box). The sample’s heartwood compounds were extracted with an optimised extraction process and then incorporated into agar.
Aach, Til   +2 more
core   +1 more source

Dunántúli tölgyek gesztesedési folyamatai [PDF]

open access: yes, 2009
The two main parts of a log, sapwood and heartwood, have different properties. With regard to utilization in the wood industry, the latter is of great importance because of its higher durability and better mechanical properties. In case of wood species
Fehér, Sándor, Krajcsák, Zoltán
core  

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