Results 11 to 20 of about 3,056 (179)

Determination of differences in morphology between sapwood and heartwood cells of Pinus pinea and Robinia pseudoacacia

open access: yesTurkish Journal of Forestry, 2015
In this study, the differences between sapwood and heartwood in fiber morphology on the samples prepared from Pinus pinea and Robinia pseudoacacia were investigated. For this aim, cell length, cell width, lumen width, wall thicknesses were measured.
Ferhat ÖZDEMİR   +3 more
doaj   +1 more source

Determination of the number of sapwood annual rings in oak in the region of southern Moravia

open access: yesJournal of Forest Science, 2006
The paper deals with the determination of the number of sapwood annual rings in oak (Quercus sp.) in relation to altitude, locality and stand age. Several different groups of samples were used from two localities of southern Moravia.
M. Rybníček, H. Vavrčík, R. Hubený
doaj   +1 more source

Comparative Research on the Structure, Chemistry, and Physical Properties of Turkey Oak and Sessile Oak Wood

open access: yesBioResources, 2023
The objective of this research was to establish comparatively some relevant features of Turkey oak and sessile oak wood, in order to better understand the drying behavior of these species.
Iulia Deaconu   +4 more
doaj   +2 more sources

Cytology of the Ray Cells in Sapwood and Heartwood [PDF]

open access: yesHolzforschung, 1959
ISSN:0018 ...
Frey-Wyssling, A., Bosshard, H. H.
openaire   +2 more sources

Comparison of Pinus Pinea Heartwood and Sapwood Pulps Obtained by Soda-Potassium Borohydride Method

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2020
This study was aimed to compare pulp properties of Pinus pinea heartwood and sapwood pulp obtained from modified soda method and to investigate effects of potassium borohydride (KBH4) used as a protective agent in cooking processes.
Ahmet Tutuş   +2 more
doaj  

Detection of electric resistivity tomography and evaluation of the sapwood-heartwood demarcation in three Asia Gymnosperm species

open access: yesSilva Fennica, 2012
The proportions of sapwood and heartwood of trees have significant impacts on various uses. Electric resistivity tomography (ERT) and corresponding electrical resistance (ER) value maps were examined in Japanese cedar (Cryptomeria japonica D.
Lin, Chen-Jung   +3 more
doaj   +1 more source

Evaluation of importance of sapwood senescence on tree growth using the model Lignum.

open access: yesSilva Fennica, 1997
The effects of two alternative formulations of sapwood senescence on the behaviour of model LIGNUM (with parameter values adjusted for Scots pine ( L.) growing southern Finland) were studied.
Sievänen, Risto   +2 more
doaj   +1 more source

Radial variations in xylem sap flux in a temperate red pine plantation forest

open access: yesEcological Processes, 2021
Background Scaling sap flux measurements to whole-tree water use or stand-level transpiration is often done using measurements conducted at a single point in the sapwood of the tree and has the potential to cause significant errors. Previous studies have
Alanna V. Bodo, M. Altaf Arain
doaj   +1 more source

Host desiccation and interspecific competition limit reproductive performance of a bark beetle

open access: yesAgricultural and Forest Entomology, EarlyView.
At high and moderate phloem moisture levels, Polygraphus proximus reproductive success was suppressed by sympatric species density. At low phloem moisture, P. proximus reproductive success was suppressed by the low phloem moisture regardless of the Cryphalus laricis hole density. Conspecific density (i.e., attack density of P.
Mai Aochi, Etsuro Takagi
wiley   +1 more source

On the relationship between root economics and plant hydraulic traits

open access: yesNew Phytologist, EarlyView.
Conceptual summary figure showing the results of the relationships between aboveground plant hydraulic strategies and root economics space (RES) traits. Summary Drought stress constrains the productivity of terrestrial ecosystems and the distribution of plant species.
Anvar Sanaei   +18 more
wiley   +1 more source

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