نتایج جستجو برای: tree diameter increment model

تعداد نتایج: 2350350  

A. Shahriari F. Rakani N. Jahantigh

The investigation of the effect of nanoparticles’ mean diameter and temperature of Al2O3–water nanofluid on velocity and energy field using the lattice Boltzmann method is the main objective of  this study. The temperature of the vertical walls is considered constant at Tc and Th, respectively, while the up and the down horizontal surfaces are smooth a...

Journal: :Ecosphere 2021

Abstract Tree‐ring data have become widely used to model tree growth responses climate variability and gain insight about the potential effects of global warming on forests. We capitalized a rare opportunity develop growth–climate models using tree‐ring collected from all trees (>4 cm in diameter at breast height) within 50 × m plots established subalpine old‐growth forests western Canada. O...

2007
Richard B. Standiford

An individual tree basal area increment model was developed for blue oak (Quercus douglasii Hook. & Arn.) in California, an important woodland tree for wildlife habitat. Box-Cox regression based on 895 increment cores that showed current basal area and the relative size of the tree crown were significant variables. Models to link basal area changes over time with tree height and crown cover wer...

2001
Gustav Nebel Jens Dragsted Thomas R. Simonsen Jerome K. Vanclay

Maquira coriacea is a commercial tree species growing throughout the Amazon flood plain forests. Densities up to 14/ha of individuals, >10 cm diameter at breast height (DBH) were observed, corresponding to a basal area of 2 m/ha and a volume of 38 m/ha. The primary period of fruiting coincided with the annual flooding, but fruits were also produced in other parts of the year. Seedlings with den...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...

2012
Yafeng Wang Katarina Čufar Dieter Eckstein Eryuan Liang

Little is known about tree height and height growth (as annual shoot elongation of the apical part of vertical stems) of coniferous trees growing at various altitudes on the Tibetan Plateau, which provides a high-elevation natural platform for assessing tree growth performance in relation to future climate change. We here investigated the variation of maximum tree height and annual height incre...

1991
J. K. Vanclay

Received February 1990 VANCLAY, J.K, 1991. Mortality functions for north Queensland rain forests. Subjective a priori grouping of tropical rain forest species for growth prediction may be unreliable because 1) there may be hundreds of species, many comparatively uncommon, the ecology of which may not be well known, 2) species within the same genus, may have significantly different growth patter...

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