نتایج جستجو برای: dbh
تعداد نتایج: 1627 فیلتر نتایج به سال:
The diameter at breast height (DBH) of trees and stands is not only a widely used plant functional trait in ecology biodiversity but also one the most fundamental measurements managing forests. However, systematically measuring DBH individual over large areas using conventional ground-based approaches labour-intensive costly. Here, we present an improved area-based approach to estimate plot-lev...
Plasma DBH and platelet MAO activities were measured by radioenzymatic assay in 10 Large-White and 20 Piétrain pigs 9 to 11 weeks old. Piétrain pigs within the same litter, challenged by halothane, were classified as malignant hyperthermia (MH) susceptible or not according to their reaction. The Large-White pig strain was not susceptible to MH. Plasma DBH activity did not differ according to st...
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...
Old trees as the most important genetic reserves of the country have great importance and value in various aspects of ecology, forest restoration management, ecotourism and even history. In this research, after identification of the old trees in the forests of Ilam province, their morphological characteristics including DBH, trunk height, total height, crown length, min & max crown diameter, cr...
This study was conducted in oak forests of Ilam province in order to evaluate the morphological characteristics of old trees including diameter at breast height, trunk height, whole tree height, minimum and maximum crown diameter, crown health, crown vitality, crown symmetry, health and form of the trunk, Was investigated. Selection of old trees was performed based on the criteria of DBH and wi...
In large samples of trees > or = 1 cm dbh (more than 1 million trees and 3000 species), in six lowland tropical forests on three continents, we assigned species with >30 individuals to one of six classes of stature at maturity (SAM). We then compared the proportional representation of understory trees (1-2 cm dbh) among these classes. The understory of the three Asian sites was predominantly co...
The frequency of alcohol use among a subject population of 28 male and 60 female college students was assessed using the Student Alcohol and Drug Use Survey (STADUS). Data were also collected on personality traits as measured by the Sensation Seeking Scale V (SSSV) and the Eysenck Personality Questionnaire (EPQ). Finally, three biochemical variables were assessed: monoamine oxidase (MAO) activi...
Inventory on Plantation Monitoring Assessment (PMA) Eucalyptus pellita at the aged of 30 months, measuring total height (h) and diameter breast (dbh). Height measurements were done using Vertex. Measuring a tree whose crown has started to close (overlap) requires more time find highest point tree, it is necessary overcome with tool that estimator model through relationship between (h-dbh). The ...
Physiological and Morphological Variation in Balsam Fir Provenances Growing in New Brunswick, Canada
There is a need to understand the physio-morphological responses of northern tree species climate change. The hypothesis current study was that provenance and light intensity were both influential in control intrinsic water-use efficiency (iWUE). Diameter at breast height (DBH)-increment hypothesized as being more affected by provenance. Intrinsic (iWUE), ratio photosynthesis (A) stomatal condu...
The present study showed the acetylcholinesterase (AChE) activity, and neurofilament protein (NFP), catecholamine-synthesizing enzymes, dopamine beta-hydroxylase (DBH) and phenylethanolamine N-methyltransferase (PNMT) immunoreactivities in the mouse adrenal gland during postnatal development. From birth to postnatal-1-day, AChE activity was weakly and diffusely found in some medullary cells and...
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