Results 31 to 40 of about 2,736,764 (275)

Dendroecology of Macrolobium acaciifolium (Fabaceae) in Central Amazonian floodplain forests [PDF]

Acta Amazonica, 2018
The forest dynamics in the Amazonian floodplains is strongly triggered by the flood pulse. Trees respond to unfavorable growth conditions during the flood period by cambial dormancy, which results in the formation of annual growth rings.
Eliane Silva BATISTA, Jochen SCHÖNGART
doaj   +1 more source

The use of X-ray method to study annual growth variation of Pinus eldarica [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2013
Using non-destructive methods to study forest productivity and wood quality as well as annual growth variations deserve special importance. In this regard annual growth changes of Pinus eldarica include width of the spring and summer rings and percentage
Saeid Mehrabi
doaj   +1 more source

ВЛИЯНИЕ КЛИМАТИЧЕСКИХ ФАКТОРОВ НА СПЕКТРАЛЬНЫЕ ХАРАКТЕРИСТИКИ ГОДИЧНЫХ КОЛЕЦ БЕРЕЗЫ ИЗВИЛИСТОЙ

Cifra: Биологические науки
Для изучения климатической реакции основных полимерных компонентов клеточной стенки в годичных кольцах у березы извилистой Betula Tortuosa Ledeb., произрастающей в экотоне альпийской лесотундры Кузнецкого Алатау, впервые использован метод инфракрасной ...
Тютькова Е., Лоскутов С.   +1 more
doaj   +1 more source

Determination of Beech (Fagas oricffiolis Lipsky) seeding cycle at caspian Forests of Iran (Kelardasht) [PDF]

تحقیقات جنگل و صنوبر ایران, 1999
The research project of determining Beech seeding cycle was conducted at Kelardasht region of Caspian Forests. Thirty dominant Beech trees were selected for quantity and quality measurement.
Ali Reza Mirbadin, Yousef Gorji Bahri, manochehr namiranian   +2 more
doaj   +1 more source

Seasonal divergence between soil water availability and atmospheric moisture recorded in intra-annual tree-ring δ18O extremes

Environmental Research Letters, 2020
Intra-annual variability of tree-ring oxygen stable isotopes (δ ^18 O) can record seasonal climate variability and a tree’s ecophysiological response to it.
Guobao Xu, Xiaohong Liu, Weizhen Sun, Paul Szejner, Xiaomin Zeng, Kei Yoshimura, Valerie Trouet   +6 more
doaj   +1 more source

Directional variance analysis of annual rings

Journal of Physics: Conference Series, 2010
The wood quality measurement methods are of increasing importance in the wood industry. The goal is to produce more high quality products with higher marketing value than is produced today. One of the key factors for increasing the market value is to provide better measurements for increased information to support the decisions made later in the ...
P Kumpulainen, K Marjanen
openaire   +1 more source

Identifying Low-Frequency Tree-Ring Variation

, 1991
I propose an approach to provide 95% confidence intervals for a chronology of low-frequency tree-ring variation so that a level of significance or importance for trends can be inferred.
Sheppard, Paul R.
core   +4 more sources

Within-tree radial and among-family variations in wood density, microfibril angle, and mechanical properties in Picea glehnii

Silva Fennica, 2018
Genetic improvements in the mechanical properties of wood are important in forestry species used for lumber, such as . The within-tree radial and among-family variations for the modulus of elasticity (MOE), modulus of rupture (MOR), and their related ...
Jun Tanabe, Futoshi Ishiguri, Akira Tamura, Yuya Takashima, Jyunichi Ohshima, Kazuya Iizuka, Shinso Yokota   +6 more
doaj   +1 more source

Seasonal variations of auxin and gibberellin A4 levels in cambial-region tissues of three conifers (Pinus elliottii, Chamaecyparis obtusa, and Cryptomeria japonica) with inherently different wood densities

Journal of Wood Science, 2021
We previously reported the species-specific annual ring formation characteristics of three conifers (slash pine (Pinus elliottii), hinoki (Japanese cypress, Chamaecyparis obtusa) and sugi (Japanese cedar, Cryptomeria japonica)) grown in the same stand ...
Yoshio Kijidani, Taku Tsuyama, Katsuhiko Takata   +2 more
doaj   +1 more source

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo, Shehu Umar Abdullahi, Hassan Adam Murtala, Halima Kabir, Khadija A. Shamsu, Sari A. Acra, Virginia A. Stallings, Mark Rodeghier, Michael R. DeBaun, Lauren J. Klein   +9 more
wiley   +1 more source