Results 21 to 30 of about 3,891 (179)

Variation of heartwood-sapwood physicochemical properties in Populus euphratica along groundwater depth gradients in the Lower Tarim River, Northwest China

Trees, Forests and People
Variation in physical and chemical properties of Populus euphratica Oliv. heartwood and sapwood under different groundwater depths reflect species-specific water and nutrient requirements. This study examines natural P.
Tongyu Chen, Tayierjiang Aishan, Ümüt Halik, Shiyu Yao   +3 more
doaj   +1 more source

Effects of pruning on heartwood formation in Scots pine trees

Journal of Forest Science, 2004
The object of this study was to investigate the effect of pruning on heartwood formation in mature Scots pine (Pinus sylvestris L.) trees. Fifty trees were treated by three different intensive pruning regimes: 42, 60 and 70 percentage of defoliation ...
B. Bergström, R. Gref, A. Ericsson
doaj   +1 more source

The Assimilate Partitioning Importance for Heartwood Extractives Formation in Robinia Pseudoacacia l. of Different Ages

Floresta e Ambiente
This study aimed to investigate the influence of tree age on the assimilates partitioning and its significance for the formation of heartwood extractives in Robinia pseudoacacia L. (black locust). Assimilate translocation in 6- and 15-year-old plants was
Oliver Dünisch, João Vicente de Figueiredo Latorraca   +1 more
doaj   +1 more source

A Comprehensive Review on Bioactive Compounds Found in Caesalpinia sappan

Molecules, 2023
Sappan wood (Caesalpinia sappan) is a tropical hardwood tree found in Southeast Asia. Sappan wood contains a water-soluble compound, which imparts a red color named brazilin.
Twinkle Vij, Pawase Prashant Anil, Rafeeya Shams, Kshirod Kumar Dash, Rhythm Kalsi, Vinay Kumar Pandey, Endre Harsányi, Béla Kovács, Ayaz Mukarram Shaikh   +8 more
doaj   +1 more source

The Resistance of Subfossil Heartwood of Oak (Quercus robur L.) From Two Sites in Poland to Destruction by Subterranean Termites

Drewno
The resistance of subfossil heartwood of European oak (Quercus robur L.) was examined in experiments conducted in accordance with the ASTM D 3345-08: 2009standard.
Adam Krajewski, Piotr Witomski, Michał Drożdżek   +2 more
doaj   +1 more source

Acacia melanoxylon in Argentina: heartwood content and its relationship with site, growth and age of the trees

Forest Systems, 2017
Aims of study: To characterize the wood of Acacia melanoxylon in relation to its potential use in the construction and furniture industry, here we determined the heartwood and sapwood content and distribution within the stem and analyzed their ...
Dora-Virginia Igartúa, Karen Moreno, Silvia-Estela Monteoliva   +2 more
doaj   +1 more source

Oxygen transmission rate in American oak barrel staves used for wine aging: Influence of wood macrostructure

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Background Oak barrels are widely used in wine and spirit aging, where oxygen transmission plays a key role in the development of chemical and sensory properties. In cooperage, stave selection is traditionally based on grain width; however, the extent to which grain and wood macrostructure determine oxygen transmission under barrel conditions ...
Maria del Alamo‐Sanza, Maria Asensio‐Cuadrado, Ana María Martínez‐Gil, Ignacio Nevares   +3 more
wiley   +1 more source

Within‐tree spatial heterogeneity of sap flow velocities and wood properties and its effect on the uncertainty of tree level sap flux estimates

PLANTS, PEOPLE, PLANET, EarlyView.
As forests are important for biodiversity and recreation and provide vital resources globally, it is essential that their health can be accurately monitored, for example, by using sap flow probes to measure tree water uptake. We investigated whether sap flow measurements might differ at various locations within the same tree due to variation in wood ...
Stefan Seeger, Markus Weiler, Martin Maier   +2 more
wiley   +1 more source

Anatomical and Histological Structures of the Male Reproductive System of Chalcophora mariana (Linnaeus, 1758) (Coleoptera: Buprestidae): Light and Scanning Electron Microscopy Study

Acta Zoologica, EarlyView.
ABSTRACT This study presents the first detailed morphological analysis of the male reproductive system of Chalcophora mariana (Linnaeus, 1758) using stereo microscopy, light microscopy, and scanning electron microscopy. The male reproductive system of C.
Hicret Arslan, Selami Candan
wiley   +1 more source

Analysis and evaluation of the impact of stand age on the occurrence and metamorphosis of red heartwood

iForest - Biogeosciences and Forestry, 2017
The red heartwood of beech is responsible for decreasing the market value of the most important deciduous tree species of central Europe. The aims of this study were: (i) to verify the hypothesis that stand age affects the occurrence and metamorphosis of
Trenčiansky M, Lieskovský M, Merganič J, Šulek R   +3 more
doaj   +1 more source