Results 31 to 40 of about 3,056 (179)

Gamma Rays Signal the Vulnerability of Forest to Extreme Drought

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Extreme drought and heat are driving forest die‐off globally, yet regional‐scale mapping of subsurface water storage capacity, governing forest vulnerability, remains a major challenge. Here, we demonstrate that airborne gamma‐ray spectrometry (GRS) of potassium (40K) decay provides a powerful proxy for subsurface constraints on water ...
Gavan S. McGrath, Joseph B. Fontaine, Richard Van Dongen, Katinka X. Ruthrof   +3 more
wiley   +1 more source

The Durability of Teak Sapwood from Community Forest Treatened by Boron Compound though Lowry-Preservation Method against Subterranean And Dry-Wood Termites

Jurnal Ilmu Kehutanan, 2021
Nowadays, most of teak wood that available on the market was mainly from comunity forest. Those teak woods were commonly harvested in the early age. The young teak wood from community forests possesses lower proportion of heartwood than sapwood.
Yus Andhini Bhekti Pertiwi, Joko Sulistyo   +1 more
doaj   +1 more source

Validated Near‐Infrared Spectroscopy and Chemometric Modelling for Rapid Quantification of Essential Oil Yield and α/β‐Santalol in Santalum Album L.

Global Challenges, Volume 10, Issue 8, August 2026.
Near‐infrared spectroscopy enables rapid, non‐destructive quality assessment across diverse sample matrices. Combined with conventional chemometrics and AI/ML models, it provides accurate prediction of key quality attributes, supporting routine quality control, process optimisation, and real‐time industrial decision‐making.
Muhammad Hassnain, Muhammad Rizwan Azhar
wiley   +1 more source

The quality comparison of particleboards produced from heartwood and sapwood of european larch

Maderas: Ciencia y Tecnología, 2019
In this paper, the impacts of heartwood and sapwood usage on the physical, mechanical, and surface properties and formaldehyde emission of particleboard are investigated. European Larch (Larix decidua) trees are chosen as a raw material.
Selahattin Bardak, Gökay Nemli, Timuçin Bardak   +2 more
doaj  

Positional differences in the micro- and ultra-structural variations of ray parenchyma cells during the transformation from sapwood to heartwood

Frontiers in Plant Science
Ray parenchyma cells are involved in the initiation of heartwood formation. The position within a ray influences the timing of ray parenchyma cell differentiation and function; however, there is little information concerning the positional influence on ...
Lijuan Yin, Lijuan Yin, Lingyu Ma, Xiaomei Jiang, Yonggang Zhang, Yupei Wei, Yuan Cao, Lihong Yao, Juan Guo   +8 more
doaj   +1 more source

Carbon‐Nutrient Interactions Under Insect Disturbance Simulated by the Land‐Surface Model QUINCY 21edff48

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 8, August 2026.
Abstract Insect outbreaks significantly impact tree mortality and carbon‐nutrient cycling in forest ecosystems, yet most terrestrial biosphere models do not represent insect disturbances due to the complexity of nutrient processes and limited data. To address this gap, we implemented a new insect impacts module in the QUINCY (Quantifying Interactions ...
Yimian Ma, Sönke Zaehle, Albert Jornet Puig, Ana Bastos   +3 more
wiley   +1 more source

VARIABILITY IN BIOMASS PRODUCTION AND SOME WOOD PROPERTIES OF Dalbergia sissoo TREES GROWN IN ASWAN (SOUTHERN EGYPT) [PDF]

Journal of Plant Production, 2011
Aboveground- tree biomass, some of the wood properties  and chemical compositions of stem wood ash were measured in five ages (2, 5, 7, 15 and 25- year- old) of Dalbergia sissoo trees, growing on infertile soil in the Tropical Farm, Kom- Ombo, Aswan ...
A. Ebeid, R. Sayed
doaj   +1 more source

Deep Soil Drying Increases Dryland Apple Tree's Eco‐Physiological Sensitivity to Atmospheric Drought

Water Resources Research, Volume 62, Issue 8, August 2026.
Abstract Dryland tree survival critically depends on deep soil water (DSW), particularly during dry spells. However, DSW is often limited and can be exhausted during periods of active tree growth, as recharge from precipitation is minimal. The eco‐physiological responses of trees to compound droughts (i.e., combined deep soil and atmospheric droughts ...
Min Yang, Shaofei Wang, Xiaodong Gao, Hailong He, Bingcheng Si, Xining Zhao   +5 more
wiley   +1 more source

WAVEFORM FEATURES OF ACOUSTIC EMISSION PROVIDE INFORMATION ABOUT REVERSIBLE AND IRREVERSIBLE PROCESSES DURING SPRUCE SAPWOOD DRYING

BioResources, 2012
Acoustic emission (AE) and radial dimensional changes during dehydration under ambient conditions were compared between fully saturated fresh Norway spruce (Picea abies (L.) Karst.) sapwood and sapwood exposed to one or two rewetting-dehydration cycles ...
Sabine Rosner
doaj  

Wood anatomical trait correlations with hydraulic efficiency and safety in an aseasonal wet tropical forest

Functional Ecology, Volume 40, Issue 8, Page 2701-2717, August 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Xylem anatomy underpins the capacity of trees to transport water while avoiding hydraulic failure, shaping species performance and resilience to climate change. However, the specific ways anatomical traits underpin hydraulic trade‐offs in tropical forests remain debated.
Julia Valentim Tavares, Samuel L. Farrar, Chris M. Smith‐Martin, Silvia Bibbo, Kasia Ziemińska, Farah Brenda Solis Petz, María Uriarte, Jess K. Zimmerman, Robert Muscarella   +8 more
wiley   +1 more source