نتایج جستجو برای: diameter increment

تعداد نتایج: 146674  

Journal: :Journal of forest science 2022

Black locust is one of the most commonly planted exotic tree species in world. It has a crucial role mitigating negative effects climate change. Its increment analyses have key forest planning. Increment added to wood stock over and again, only this continuous replenishment makes sustainable management possible. This study presents results analysis periodic annual (PAI) by diameter (dbh) volume...

Journal: :Archives of internal medicine 2012
Jennifer Weuve Robin C Puett Joel Schwartz Jeff D Yanosky Francine Laden Francine Grodstein

BACKGROUND Chronic exposure to particulate air pollution may accelerate cognitive decline in older adults, although data on this association are limited. Our objective was to examine long-term exposure to particulate matter (PM) air pollution, both coarse ([PM 2.5-10 μm in diameter [PM(2.5-10)]) and fine (PM <2.5 μm in diameter [PM(2.5)]), in relation to cognitive decline. METHODS The study p...

Journal: :The Economic Journal 1891

Journal: :Ceylon Journal of Science 2023

Information on the diameter increment of tree species is important for developing a sustainable forest harvesting plan and reforestation. Fitting growth model can be utilized to get information. The objective this study was develop predictive annual multispecies stand in Sinharaja Rain Forest Sri Lanka. To fulfill objective, four linear mixedeffect models were fitted predict at breast height (d...

Journal: :The Forestry Chronicle 1935

2007
FABIANA DE GOIS AQUINO BRUNO MACHADO TELES WALTER JOSÉ FELIPE RIBEIRO

(Woody community dynamics in two fragments of “cerrado” stricto sensu over a seven-year period (1995-2002), MA, Brazil). This study was conducted in two fragments of “cerrado” stricto sensu in the Gerais de Balsas Colonization Project, located in southern Maranhão, Brazil. The objective was to evaluate the dynamics of the woody plant community, over seven years (1995-2002). Four transects of 16...

1997
D G. Oreshkin J P. Skovsgaard Jerome K. Vanclay D. G. Oreshkin

A new method is proposed for estimating vitality or growth potential for saplings of Scots pine (Pinus sylvestris L.), based on height, diameter and height increment. A two-stage process was used to establish the vitality index. The logarithms of height, diameter and height increment were regressed against age, to adjust for the wide range of ages present in our data (c. 10,000 saplings with ag...

2016
Asma Perveen M. P. Jahan

Ni alloys have managed to cover wide range of applications such as automotive industries, oil gas industries, and aerospace industries. However, these alloys impose challenges while using conventional machining technologies. On the other hand, Micro-Electro-Discharge machining (micro-EDM) is a nonconventional machining method that uses controlled sparks energy to remove material irrespective of...

2016
Jens Dahlhausen Peter Biber Thomas Rötzer Enno Uhl Hans Pretzsch Francisco Escobedo Stephen John Livesley

Urban trees have gained in importance during recent decades, but little is known about the temporal dynamic of tree growth in urban areas. The present study investigated the allometric relationships of stem diameter, tree height, and crown radius for six different tree species in six metropolises worldwide. Increment cores of the trees were used for identifying the relationship of basal area an...

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